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SIMFP 2016The Fifth Saudi International Meeting on Frontiers of PhysicsJazan University, Jazan, Saudi Arabia16-18 February 2016
Meeting Book
Organizers:
University Vice-Presidency for Quality and Academic Development,Physics Department and Faculty of Science,@ Jazan University, Saudi Arabia.
http://www.jazanu.edu.sa/SIMFP2016
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Department of Physics, Faculty of Science, Jazan University.Gizan 22822 P.O. Box 114, Kingdom of Saudi Arabia.c©2016 SIMFP 2016 Committee, Jazan University, All rights reserved.
SIMFP 2016
WelcomeRESPECTABLE COLLEAGUES, LADIES AND GENTLEMEN,ASSALAM ALAIKUM ,
It’s my great pleasure to welcome all of you to the Fifth Saudi Inter-national Meeting on Frontiers of Physics held at Jazan University inthe city of Jizan, Saudi Arabia, 16 -18 Feb 2016. We are delightedthat this meeting continues to attract many colleagues working at highlyrespected universities within theKingdom and by many scientistswho have traveled from famousinstitutions in distant lands. Onbehalf of Jazan University and theorganizing committee I welcome alldistinguished Speakers and Guests.We wholeheartedly thank you fortaking the time to inform us and toshare with other colleagues resultsfrom important projects you haveundertaken in several subfields ofphysics. I know we will all wantto warmly thank the many on our campus who have dedicated severalmonths on this splendid event, ranging from dedicated office staff, to theindefatigable Organizing Committee, and also including all other colleaguesand university workers, who made sure we could discuss physics andsocialize at this beautiful venue. It is with sincere gratitude that we thankActing Rector of Jazan University, Professor Dr. Mohammed bin Ali Rabiyaand all University vice Rectors for their constant support for this meeting.This year, our Saudi Meeting on Frontiers of Physics takes a further step toestablish itself as a leading scientific meeting in physics in Saudi Arabiaby publishing the meeting proceedings in collaboration with the renownedAmerican Institute for Physics (AIP) , where selected papers will be refereedand published by AIP ; we thank AIP for their interest in the SIMFP andsupport. We hope that such initiative will attract even more participants infuture SIMFP meetings and encourage further research activities.The SIMFP2016 program contains scientific activities as well as socialcomponents , I hope you enjoy the whole program and I wish you all a mostenjoyable stay in Jizan.
Professor Ali Al-Kamli, SIMFP2016 Chair and Vice Rector.
i
Contents SIMFP 2016
Contents
1 About the Workshop 1
2 Committees 3
3 Invited Speakers Biographies 5
4 Abstracts 154.1 The Invited Talks . . . . . . . . . . . . . . . . . . . . . . 174.2 Quantum Optics and Laser Physics . . . . . . . . . . . . 274.3 Photonics and Plasmonics . . . . . . . . . . . . . . . . . 374.4 Atomic and Molecular Physics . . . . . . . . . . . . . . 494.5 Quantum Information Science . . . . . . . . . . . . . . . 594.6 Materials Science . . . . . . . . . . . . . . . . . . . . . 654.7 Nuclear and Particle Physics . . . . . . . . . . . . . . . 894.8 Nanoscience and Engineering . . . . . . . . . . . . . . . 1014.9 Interdisciplinary Physics . . . . . . . . . . . . . . . . . . 113
5 The Social Program 121
iii
1 About the Workshop SIMFP 2016
About the WorkshopThe Fifth Saudi International Meeting on Frontiers of Physics 2016 aims tobring together researchers and scientists from Saudi Arabia and abroad to ex-change new ideas, share their experiences, discuss their latest achievements,and present their results in allaspects of new frontiers of physicswith particular emphasis oninterdisciplinary aspects. Themeeting is organized by theDepartment of Physics at JazanUniversity, Saudi Arabia, during16-18 February 2016, and it willbe held at the site of the newJazan University campus, in thecity of Gizan on the southerncoast of the Red Sea, 775 Kmsouth of Makkah. With the 2016Workshop, this annual event willbe in its Fifth edition to be addedto the previous workshops. Theprogram will include invited talks,oral and poster presentationsin a variety of research fieldsin physics, and also plenarytalks covering interdisciplinaryphysics.
Objectives
1. To provide an ideal platform to promote scientific dialogue and dis-cussions on current directions in modern physics.
2. To open a venue for future cooperation and joint research betweenJazan University and other high profile institutions.
1
SIMFP 2016 1 About the Workshop
Topics
Quantum Optics and Laser PhysicsPhotonics and PlasmonicsAtomic and Molecular PhysicsQuantum Information ScienceMaterials SciencesNuclear and Particle PhysicsNanoscience and EngineeringInterdisciplinary Physics
Conference Organization
Organized by
University Vice-Presidency for Quality and Academic Development,Physics Department and Faculty of Science,@ Jazan University, Saudi Arabia.
2
2 Committees SIMFP 2016
Committees
Program CommitteeProf. Ali Al-Kamli (Chair)Dr. Galib Souadi (Co-Chair)Prof. Nurdogan Can (Spokesperson)Dr. Mahmoud Mahgoub (Secretary)Dr. Abdelrahman MahdyDr. Mohammed Fadhali
Logistics CommitteeVice Rector’s Office for Quality and Academic Development
Nader Al-HomoudQassim MuqriEssam KamlyZain ShafeiAyman Hakami
Ahmad HattaniAbdullah AqeelAnwar QatrawiAhmed Jarallah
Department of PhysicsAli ArishiSaleem GulfamAbdulAziz Al-ShehriAbdelhamid Alrahili
3
3 Invited Speakers Biographies SIMFP 2016
Invited Speakers Biographies
Professor Azzedine Boudriqua
Is a Professor at the University Paris 13. He is leading Organic Photonicsand Nanostructures group of Laboratoire de Physique des Lasers (LPL) atGalilee Institute. After a M. Sc. in Physics from the University of Annaba
(1990, Algeria), he prepared a Ph. D. inPhysics at the University of Metz in France(1996) where he conducted, for 15 years,his research in the field of integrated opticsand photonic crystals as an AssociatedProfessor. In 1997, he joined the group ofProfessor W. L. Barnes at Exeter University(UK) as a fellowship researcher where heworked on microstructured luminescentpolymers. Four years later (2001) hedefended his Habilitation à Diriger des Recherches (HDR) at the Universityof Metz.Since 2007, he is a full Professor at the University Paris 13. He is currentlydeveloping activities in the field of nanophotonics as well as nonlinearoptics. He was involved in the organization of several conferences. Inparticular, he was the chairman of the National conference on guidedoptics (JNOG) 2006 and the French Optical Society Congress “OptiqueParis 2013” in 2013. He participates to several national and internationalscientific committees and expert panels.Azzedine Boudrioua has published more than 85 journal papers and morethan 120 papers presented in national and international conferences. He alsopublished two books on Integrated Optics and one book on Organic Lasersis under publication. He is a member of the French Optical Society boardand a Vice President of the Optical and Photonics Algerian Society. Inaddition to that, he is involved in several national and international projectsand he is leading some of them. More recently, he was appointed by theinternational steering committee of the International Year of Light 2015 as acoordinator of Ibn al Haytham International Working Group.
5
SIMFP 2016 3 Invited Speakers Biographies
Dr. S. Sasi Florence
Dr.Sasi Florence is an Assistant Professor in the Department of Physics,College of Science in Al-Ardha at Jazan University, Saudi Arabia. Sheearned her Ph.D from Mother Teresa Women’s University, India. Herresearch interests focus on II-VI nano semiconductors, Organic LigandCapped Nano semiconductors, Nano lithography for Solar Cell Applications.She has over 17 peer reviewed International journals, participated andpresented over 20 International conferences and workshops. She hasreceived and successfully completed a prestigious Women Scientist ProjectScheme-A (2011-2014) funded by the Department of Science & Technology(DST), Central Government of India. She has been served as an Organizingcommittee member in the International conferences held at Mother TeresaWomen’s University, India. She has attended several training coursesand workshops by the Government of India including Women ScientistsScheme-A awardees program, Hyderabad and Training Program in Science& Technology for Rural Societies, LBSNAA, Mussoorie, India. She haspresented her research articles in Nanotoday event at Singapore and GordonResearch Conference at United States of America. Her recent researchproject has been accepted by the Deanship of Scientific Research, JazanUniversity, Jizan, Saudi Arabia.
6
3 Invited Speakers Biographies SIMFP 2016
Professor Javier Garcia Guinea
A Spanish geologist; born in Madrid; gradudated in the Universidad Com-plutense of Madrid (B.A., 1976); Ph.D. in Science University of Zaragoza,1981. He taught at the Spanish Universities of Extremadura, Zaragoza,and Madrid, from 1978 until his appointment in 1987 as Researcher of theMuseo Nacional de Ciencias Naturales (MNCN), an Institute of the SpanishResearching Council (CSIC).
His early work was concerned withgeology of Spanish ore deposits of gem-stones, mineralogy, and gemology. Helater contributed to the modernizationof the historical mineralogical collectionby setting and computing, to severalrearrangements of the minerals exhibitionhalls, and to the improvements of the ge-ological laboratories of the MNCN. Duringthe 1990s, Garcia-Guinea was visitingprofessor in the department of Optoelectronics and Thermoluminescence ofthe School of Physics of the University of Sussex conducting basic researchon thermoluminescence emissions of feldspar and carbonate minerals.Now, he is a professor of research CSIC at the MNCN institution for basicmineralogical research in the Department of Geology and for scientificmanagement of 7 persons in the following units: (i) laboratory of electronmicroscopy and spectroscopy facilities; (ii) geological laboratories; and (iii)historical collections of minerals, rocks, gemstones, and meteorites of theMNCN institution. Garcia-Guinea, J. has 190 hits in the Web of Science orScopus (ID:7003954168) including 162 co-authors of 23 different countries.In addition, Prof. Garcia-Guinea has 106 additional secondary documentsin divulgation journals, 140 presentations to meetings, 16 chapters of books,two patents, and five International Cooperation actions in Uruguay, Bolivia,Argentina, Ecuador and Vietnam. The last projects concerned research onspeleothems of the Ha Long Bay (Vietnam); Castañar de Ibor Cave (Spain);Carbonate phases with activators to model luminescence emissions of thecarbonates group and Thallium microscopic distribution and speciation inhydrothermal polymetallic mineralization areas and mine contaminatedsoils.
7
SIMFP 2016 3 Invited Speakers Biographies
Professor Dariusz Hreniak
Born in 1976 in Wroclaw (Poland). Doctor of chemistry at the Insti-tute of Low Temperature and Structure Research Polish Academy of Sci-ences in Wroclaw. Since 2005, Director’s Proxy for Implementations.Present research activity are laser spec-troscopy, nanocrystals syntheses, sol-gelmaterials, rare-earth elements, luminescentmarkers, nanoceramic processing and char-acterization and luminescence properties ofthe rare-earth ions in glasses, nanoceramicsand nanocomposites.CEO in spin-off type companies: Nanovec-tors Sp. z o.o. (since 2011, optical securingof valuable objects) and in Ipanterm Sp. zo.o. (since 2013, new fire-proof insulating materials). Published more than120 publications in international journals and book chapters (h-index 23,>1700 total citations) and 16 patents and patents pending.
8
3 Invited Speakers Biographies SIMFP 2016
Dr. Khai Le
Was born in Khanh Hoa, Vietnam, in 1983. He received a BSc degree inPhysics from University of Natural Sciences at Ho Chi Minh city, VietnamNational University, Vietnam, in 2005. From 2006 to 2008, he was withthe Nanophotonics group at the Department of Electrical and ComputerEngineering, Ajou University, Korea.
In 2008, he was awarded the BOF doctoralscholarship to study Electrical Engineering(Photonics) in the Photonics ResearchGroup at the Department of InformationTechnology (INTEC), Ghent University,Belgium where he received the PhD degreeon June 2011. During his PhD studyhe has spent 3 months at George GreenInstitute for Electromagnetics Research,University of Nottingham, Nottingham,UK as a visiting scholar to perform the short term scientific mission(STSM) program of COST Action MP0702. From July 2011 to Oct. 2013,he worked at the University of Texas at Austin, USA and University ofToronto, Canada as a postdoctoral fellow. On Nov. 2013 he joined inHoa Sen University, Vietnam and acted as Dean of Faculty of Science andTechnology. From May 2014 to May 2015, he took a sabbatical leave forUniversity of Minnesota, Duluth, MN, USA as a visiting professor forteaching and research. From Oct. 2015, he has been a visiting professor inPhysics Department, Jazan University, KSA for two months.He has research interests in design, modeling, fabrication and charac-terization of nanophotonic devices. He serves as an active reviewerfor international journals including IEEE/OSA Journal of LightwaveTechnology, IEEE Photonics Technology Letters, Journal of Optical Societyof America A (and B), Optics Express, Optics Letter, Applied Optics,Plasmonics.
9
SIMFP 2016 3 Invited Speakers Biographies
Professor Younes Messaddeq
Younès Messaddeq holds a PhD in chemistry and a bachelor’s degree insolid state chemistry from the Universite de Rennes 1, France. He is theChairholder of the prestigious Canada’s Excellence Research Chair (CERC)in Enabling Photonic Innovations for Information and Communications witha budget of 28M$ over a period of seven years. He is currently leading ateam of 44 researchers (graduate students, post-doctoral fellow, technicians,and research professionals). He is one of the world’s most accomplishedresearchers in glass-based materials and optical fiber development. His R&Dactivities include advanced glass-based materials, production of specialtyoptical fibers, preparation and characterization of hybrid materials using thesol-gel process and preparation of nanostructured materials.
He has received several distinctions andawards, including Special Optical FibersAward for Telecommunication from Mairof Araraquara in Brazil, STA fellowship onOptical Fibers from the Japanese Ministerof Science and Technology, Heraeus DentalAward on Dental composites, Ruy FerreiraSanto Award and 1A classification fromthe Minister of Science and Technologyand CNPq(National Consul of Research) –Brazil. He is a member of several committees (Editorial Board –Journal ofNon crystalline Solids(JNCS),Member – NSF/International Materials Insti-tute for New Functionality in Glass, International Non-Oxide Committee(ISNOG), International Glass Committee (IGC).He published more than 365 papers in refereed journals (5300 citation,h-index=37) and presented several invited talks (36 over the last 6 years).He currently holds 20 patents, 7 of which were submitted after his arrivalat Université Laval (since 2011). He contributed to the creation of threespinoffs companies in Brazil (Terra Azul, Microtube, DMC-Biocel). In2013, he was appointed the director of the Joint International Research Unitbetween Universidade Estadual Paulista (UNESP)-Ulaval (Brazil-Canada)for a period of five years. In 2015, he established the joined researchlaboratory between University of Bordeaux in France and Laval University.
10
3 Invited Speakers Biographies SIMFP 2016
Professor Martin Richardson
Dr Martin Richardson, Founding Director of the Townes Laser Institute,Professor of Optics, Physics and ECE, a Trustee Chair, Pegasus Professorand the Northrop-Grumman Professor of X-ray Photonics at UCF. Educatedat Imperial College and London University, he previously held positions atNRC-Canada and the University of Rochester. He is a world expert in thefield of lasers, having spent most of his career in high power lasers, laser-plasmas and applications of lasers. He has established strong collaborationsand serves on boards in many countries and has held visiting appointmentsin Germany, France, Japan, UK, Australia, Saudi Arabia, Qatar and theformer Soviet Union.
A proponent of international science ed-ucation, he has created several internationaldegree programs. On joining UCF he es-tablished the Laser Plasma Laboratory spe-cializing in the development of high powerlasers, ultrafast lasers and their applicationsto laser-plasmas, X-ray and EUV sources,laser materials processing, and industrial,medical and defense applications of lasers.Richardson has directed several major na-tional laser research programs including two MURI programs, has super-vised ∼70 MS and Ph.D students from many universities, has publishedover 430 scientific articles in professional scientific journals, and has pre-sented numerous invited and plenary talks. He has written over a dozenbook chapters and holds ∼25 patents, with several pending and has chairedmany international conferences including IQEC, ICHSP, and several SPIEmeetings. He is a former Associate Editor of the IEEE Journal of QuantumElectronics, and serves on the Editorial Board of the LIA “Journal of LaserApplications”. He is a recipient of the Schardin Medal, awarded by theGerman Physical Society, the Harold E. Edgerton Award of SPIE and is aFellow of OSA, JSPS, IEEE, APS, SPIE, IoP and AAAS . In December2013 he was honored with the ‘Docteur Honoris Causa of the University ofBordeaux. In 2014-2015 he was a Jefferson Science Fellow of the NationalAcademy of Sciences at the U.S. State Department in Washnginton.
11
SIMFP 2016 3 Invited Speakers Biographies
Professor Wieslaw Strek
Prof. Wiesław Strek (born 1948 in Poland) is employed at Institute ofLow Temperatures and Structure Research, Polish Academy of Sciences inWroclaw since 1971. His research activity covers laser spectroscopy, lumi-nescence properties of rare earth and transition metal ions in crystal, glassesand nanostructures, theory of electronic relaxation (f-f and d-d radiationlesstransitions, multiphoton transitions in rare earth complexes, cooperativeinteractions, concentration luminescence quenching ) in metal complexes,nonlinear optics, solid state white lighting, sol-gel materials, nanotechnology,size effects in nanomaterials, nanomaterials for fuel cells, nanophosphors,optical nanoceramics, optical sensors, biophysics (photodynamical therapy,cryotherapy).
Member of editorial boards of Journalof Alloys and Compounds (Editor- Else-vier), Materials Science-Poland, ISRNSpectroscopy, Journal of Rare Earths(Managing Member of Editorial Board,Elsevier), Acta Bio-Optica et InformaticaMedica, Progress in Physics (Elsevier-OpenAccess)Member of Steering Committee of Eu-ropean Rare Earth Society, (1982-1990);Scientific Secretary of Spectroscopy Committee of Polish Academy ofScience (1984-1989), Scientific Secretary of the Conference on Rare EarthSpectroscopy, Wroclaw (1984); Member of Polish Scientific Board ofNational Center of Research and Development (2011-2012); Memberof Program Committees of the II and III Conference on Rare EarthSpectroscopy, China (1987), India (1990); Member of Program Committeeand International Board of the International Conferences on Luminescence,Member of Scientific Committee of the New Developments in f-elements,Luven (1990); Chairman of Organizing Committee of International Schoolson Excited States of Transitions Elements, Poland (1988- 2010); Chairmanof the Organizing Committee of I, II Winter and I Spring Workshops onSpectroscopy of Rare Earth Elements, Poland (1993, 1999, 2003); Chairmanof International Conference on Sol Gel Materials, Research, Technology,Applications, SGM 2001, 2003; Member of Scientific Committee of theRare Earths Conference, Campos do Jordao, Brazylia (2001); Chairmanof Organizing Committee of the International Conference on f-elements(ICfE’06), Wroclaw; Chairman of the Conference on Rare Earth Materials(REMAT) 2008, 20011, 2013, 2015-Poland; Chairman of the International
12
3 Invited Speakers Biographies SIMFP 2016
Board of International Confrence on Luminescence 2014. Co-Chairman ofLaser Ceramic Symposium 2004-2015.Supervisor of 9 doctor thesis.Author/co-author of more than 400 papers, more than 4000 citations, Hirschindex-35. Author more than 30 patents in optical security, nanotechnology,laser therapy, cryotherapy, sol-gel technology, thermal insulation porousmaterials.Visiting professor at institutes and universities in France, Denmark, Brasil,Germany, Belarus, Russia, Italy, Finland.Editor and co-editor of conference proceedings: „Rare Earth Spectroscopy”,Eds. B. Jezowska-Trzebiatowska, J. Legendziewicz, W. Strek (WorldSci. Publ., Singapore, 1985), „Photon Emission In Biological Systems”,Eds. B. Jezowska-Trzebiatowska , J. Sławinski, B. Kochel, W. Strek(World Sci. Press, Singapore, 1987), „Biological Luminescence”, Eds.B. Jezowska-Trzebiatowska, J. Sławinski, B. Kochel, W. Strek (WorldSci.Press, Singapore, 1990); „Excited States of Transition Elements”, B.Jezowska- Trzebiatowska, J. Legendziewicz, W. Strek (World Sci. Press,Singapore,1988, 1992, 1995, 1998, 2001), Optical Materials 2003, 2006,2008, 2012).
13
SIMFP 2016
The Fifth Saudi International Meeting on Frontiers of Physicswww.jazanu.edu.sa/SIMFP2016
4.1 The Invited Talks
Surface plasmon-enhanced emission in an
organic light-emitting diode: toward organic
laser diode under electrical pumping
Azzedine Boudrioua, Mahmoud Chakaroun, Alexis Fishcer
Université Paris 13, France
Organic laser diode (OLD) under electrical pumping is one of the most
challenging issues of organic optoelectronic filed. Despite the progress
made in recent years, the OLD is still not demonstrated. This is
particularly due to the intrinsic properties of organic compounds which
suffer from strong absorptions (polaronic, annihilation singlet-triplet, etc.)
as well as low electrical performances (low charge motilities, low current
density, etc.). In this context, most of works were concentrated on the
optical pumping and the optimization of the laser micro-cavity. The latter
can be either planar as defects in 2D photonic crystals or vertical
(commonly called VECSEL). Even if some works have demonstrated the
possibility of achieving optically-pumped micro or nano cavity organic
lasers having a high quality factor, the performances obtained are still
insufficient to consider the electrical pumping of these structures. At this
point of the OLD endeavor, several fundamental questions remain: by
using a reasonable current density, is it possible to enhance the produced
light (the rate of radiation) to reach the laser threshold without
deteriorating the organic medium? How can we do that?
In this proposal, we aim to increase the emission of the available organic
materials thanks to localized surface plasmon enhanced emission by using
metallic nanoparticles, and to investigate this effect in a micro-cavity for
laser effect improvement.
Submitting author: B., Azzedine, Université Paris 13, Laboratoire de
Physique des Lasers, UMR CNRS 7538, Université Paris 13, 93430
Villetaneuse, France, E-mail: [email protected].
SIMFP 2016 4 Abstracts
18
Large scale ZnTe nanostructures on polymer
micro patterns via capillary flow
S.Sasi Florence1, Nurdogan Can
1, Priyanka Sachan
2, Raju Kumar Gupta
2,
Hajer Adam1 and M.Umadevi
3
1Jazan University, Saudi Arabia,
2Indian Institute of Technology and
3Mother Teresa Women’s University, India
A novel approach to prepare micro patterns ZnTe nanostructures on Si
(100) substrate using thermal evaporation is proposed by capillary Flow
Lithography technique on a self-assembled sacrificial Polystyrene mask.
Polystyrene thin films on Si substrates are used to fabricate surface micro-
relief patterns. The deposited ZnTe nanoparticles properties were assessed
by X-ray diffraction, Atomic Force Microscope (AFM), Scanning
Electron Microscope (SEM), Raman spectroscopy, Photoluminescence
and UV-Vis spectrophotometry. The X-ray diffraction patterns of the films
exhibited reflection corresponding to the cubic (111) phase and showed
polycrystallinity with a Zinc blende structure. The SEM images indicated
that the particles were well dispersed and spherical in shape. We report
and demonstrate the micro-arrays of ZnTe nanoparticles on a self-
assembled sacrificial PS mask using a capillary flow photolithography
process which showed excellent structural, morphological and optical
properties which can be used in photovoltaic devices.
Submitting author: S.Sasi Florence, Jazan University, Faculty of Science
and Arts in Al-Ardha, Department of Physics, P. O. Box 114, Gizan
45142, Saudi Arabia.
E-mail: [email protected].
4 Abstracts SIMFP 2016
19
New strategies to optimize material analyses
using modern microscopes (ESEM, 3DWLI)
Javier Garcia-Guinea, Fernando Garrido, Paula Lopez-Arce, P., Laura
Tormo, Alberto Jorge, Marta Furio, Cristina Paradela.
1Museo Nacional Ciencias Naturales (MNCN-CSIC), Spain
There are numerous factors that can affect the decision of choosing the
most appropriate analytical technique. In many cases more than one
technique maybe applied, and trade-offs, such as improved spatial
resolution versus lower concentration sensitivity, are involved. Other
factors are analytical sampling depth; samples conduction; elemental
versus molecular chemical analyses; destructive versus non-destructive
techniques; survey versus specific element analysis; quantitative versus
qualitative results, etc. After a decade working with electronic and optical
microscopes coupled to elemental-chemical probes (EDS, WDS) and
spectral detectors (CL, PL, FL, Raman) we actually are circumventing the
traditional polarizing optical microscopes since the sample preparation
processes destroy large sample textures, introducing contaminant
abrasives and glues using dangerous and expensive consumables.
Alternatively, the modern large chambers of microscopes ESEM-EDS-
WDS-CL, Raman-PL and 3DWLI admit large specimens, e.g. 10x10x2
cm keeping textures and structures. In addition, to prepare these new large
sections we suggest extracting powdered samples to be used in XRD,
DTA-TG, FTIR, TL and DSC techniques and fresh little surfaces (chips)
using tongs to avoid contaminants to be also studied under the
microscopes. Our new 3D-White-Light-Interferometer optical microscope
(3DWLI) combine interferometry and confocal on one stand, offering
phase shifting and white light interferometry for characterization of very
smooth surfaces (<1 nm in roughness). This new optical microscope
provides novel interferometric and confocal colored images useful for
crystallographic measurements avoiding painful sample preparations as
those required by the ancient polarizing microscopes.
Submitting author: J. Garcia-Guinea. Museo Nacional Ciencias
Naturales (MNCN, CSIC). P. O. Box. Calle Jose Gutierrez Abascal 2.
Madrid, Spain. 28006. Tel +0034-639177997.
Email: [email protected]
SIMFP 2016 4 Abstracts
20
Synthesis, spectroscopic properties and possible
applications of rare-earth doped Sr2CeO4
nanomaterials
Mariusz Stefański, Robert Tomala, Łukasz Marciniak, Wiesław Stręk,
Dariusz Hreniak
Polish Academy of Sciences, Poland
Nanocrystalline powders of the Sr2CeO4 and Sr2CeO4 doped with rare-
earth ions were prepared using the modified Pechini’s method [1]. Their
morphology and structural and optical properties were studied. In
particular, the absorption, excitation and emission spectra, and emission
decays were recorded in a wide temperature range and analysed in details.
The quantum efficiencies for investigated samples were determined. It
was found that with increase of grain sizes the luminescence lifetime
significantly decreased. Strong thermal quenching of luminescence of
doped Sr2CeO4 nanocrystals was also noticed. The Sr2CeO4 nanoceramics
were also produced from the nanocrystalline powders by using high
pressure-low temperature (HPLT) isostatic sintering [2]. Possibility of
using Sr2CeO4 nanomaterials for lightning, optical thermometry and in
solar applications is discussed.
Submitting author: D. Hreniak, Institute of Low Temperature and
Structure Research, Polish Academy of Sciences, Wroclaw, Poland,
Poland, Tel: +48 71-39-54;
E-mail: [email protected].
References
[1] M. Stefański, L. Marciniak, D. Hreniak, W. Strek, Journal of
Physical Chemistry, 142, 184701 (2015).
[2] R. Fedyk, D. Hreniak, W. Łojkowski, W. Strek, H. Matysiak,
E. Grzanka, S. Gierlotka, P. Mazur, Optical Materials, 29, 1252-
1257 (2007).
4 Abstracts SIMFP 2016
21
Plasmonic and dielectric resonant structures for
light-trapping enhancement in organic solar cells
Khai Q. Le1,2
1Hoa Sen University, Vietnam and
2Jazan University, Saudi Arabia
Photovoltaic (PV) research has been attempting to find cheaper and more
manufacturable solar cells. Thin-film OSCs have potentially provided
such a route because of their lower cost in production and increased
manufacturing volume. This route is hampered by the need to achieve
higher efficiencies in OSC before becoming a viable solution. A primary
difficulty in achieving higher efficiencies is getting enough light to be
absorbed in the thin-film and the short diffusion length of carriers.
Thicknesses of organic solar cells are restricted by physical limitation
because of the need to utilize electrical characteristics of the material. If
the active material becomes too thick, it will result in significant reduction
in exciton collection from recombination within the active material.
Incident light propagates through the active material before enough can be
converted to excitons, due to the thickness restraint. On the other hand,
too thick active material beyond carrier diffusion length will cause current
loss due to recombination. Thus, the tradeoff between enough absorption
and minimizing recombination is the key issue in designing solar cells.
Failure to absorb photons within the absorption band or below the
bandgap of the polymer active layer limits the power conversion
efficiency of the OSC. A significant portion of all available sunlight is
unharvested due to either the reflection from the reflective electrodes of
the OSC or the transmission through the semitransparent active substrate.
In this talk, engineering plasmonic and dielectric resonant structures to
enhance light absorption in OSCs will be discussed. Physics insights the
enhancement will be explored and demonstrated.
Submitting author: K. Q., Lee, Hoa Sen University, Faculty of Science
and Technology, Hoa Sen University, Ho Chi Minh, Vietnam; Jazan
University, Faculty of Science, Department of Physics, Saudi Arabia.
E-mail: [email protected]
SIMFP 2016 4 Abstracts
22
Advances in special optical fibers
Younes Messaddeq
Université Laval, Québec, Canada
The main issues and greatest challenges for the development of new
photonic glasses materials and optical fibers are related to several aspects,
from their synthesis to their shaping and integration into photonic
devices. New drivers have arisen in recent years for the exploration and
development of new technologies related to glass science: i) the
photonic band- gap effect, ii) the production of nanostructured
materials and iii) the incorporation of nanoparticles in glass matrix.
Based on these aspects, we will discuss on the development of novel
optical glasses based on silica and heavy oxide and chalcogenide glasses
and their impact on various fields of application such as information
technology, environmental monitoring, biomedical devices and
security/defense.
I will present also, novel textile fabrics integrating unobtrusive multi-
material fibers that communicate through 2.4 GHz wireless networks with
excellent signal quality. The conductor elements of the textiles are
embedded within the fibers themselves, providing electrical and
chemical shielding against the environment, while preserving the
mechanical and cosmetic properties of the garments. These multi-
material fibers combine insulating and conducting materials into a well-
defined geometry, and represent a cost-effective and minimally- invasive
approach to sensor fabrics and bio-sensing textiles connected in real time
to mobile communications infrastructures.
Submitting author: Y. Messaddeq, Centre d’optique, photonique et
laser (COPL), Université Laval, Québec, Canada,
E-mail: [email protected]
4 Abstracts SIMFP 2016
23
The Mysteries of Ultrafast Laser Filamentation
in Air
Martin Richardson
University of Central Florida, USA
Laser light filamentation, first observed in the atmosphere two decades
ago continues to intrigue physicists across the globe. Its most visible
characteristic is the apparent ability of high intensity light beams to defy
the laws of diffraction, or the divergence of a propagating light, and
instead collapse on themselves into a self-sustaining light filaments stable
for 100’s meters. They pack intensities of > 10 13
W/cm2, high enough to
ablate most surfaces. Their mechanism of formation leads to the fact that
their peak intensity is uniquely clamped, providing a stable shot-to-shot
intensity beam with well-characterized profile. This enables Laser
induced breakdown spectroscopy (LIBS) of remote surface contaminants
at significant distances. Filaments emit white light in the forward and
backward directions, providing unique sources for remote absorption
spectroscopic sensing. Studies of filamentation are entering a new phase of investigation. As we
consolidate more our understanding of the dynamics of the creation and
propagation of single stabilized filaments in air, we can begin to deploy
new modalities in filamentation. In this review we consider our current
understand of single filament formation in air by conventional high
intensity femtosecond lasers, describing in particular new investigations
of the continuum emission and the impact molecular alignment can have
on filament propagation. We describe the use of multiple filaments to both
investigate the phase characteristics of filaments, and through multi-color
filaments to generate remote coherent THz emission. By manipulating the
initial phase of the originating laser beam, we describe how multiple
organized arrays of filaments can be generated, and illustrate this with the
recent demonstration of double helical rotating filaments. Structured
arrays of filaments open the pathway to many air filament scenarios,
including the guiding and manipulation of microwaves, and potentially
electric discharges.
Submitting author: M. Richardson, Townes Laser Institute, College of
Optics & Photonics, University of Central Florida, USA,
E-mail: [email protected]
SIMFP 2016 4 Abstracts
24
Laser induced white light emission in rare earth
doped nanocrystals
Wiesław Stręk, Łukasz Marciniak, Robert Tomala, Mariusz Stefański,
Artur Bednarkiewicz, Dariusz Hreniak
Polish Academy of Sciences, Poland
Laser induced white emission (LIWE) of rare earth doped nanocrystalline
powders is a subject of increasing research activity in last few years [1,2].
It was demonstrated that it is the broadband anti-Stokes emission
characterized by several characteristic features:
The intensity of LIWE depends on excitation power P of infrared CW
laser according to the power law of multiphoton absorption I ∝ PN, where
the order parameter N is a number of absorbed photons;
The LIWE intensity strongly depends on concentration of active ions and
on the atmosphere pressure and is the highest in vacuum, sometimes
being even 2-3 orders of magnitudes higher than in ambient atmosphere;
The LIWE intensity decreased with lowering the temperature of sample
and is accompanied by an efficient photocurrent;
The temperature of LIWE is relatively lower, much less than could be
predicted assuming incandescence - black body emission;
The LIWE occurs after enhancement above the power density threshold
and is characterized by long rise and decay times;
The LIWE is very efficient reaching even 10% of quantum yield.
The results of LIWE measurements are presented for several
nanocrystalline hosts (YAG, YAlO3, Sr2CeO4, LiYF4) doped with Nd3+
and Yb3+
ions. The mechanism of LIWE is discussed in terms of
intervalence charge transfer (IVCT) transitions.
Submitting author: W. Stręk, Institute of Low Temperature and Structure
Research, Polish Academy of Sciences, Wroclaw, Poland,
E-mail: [email protected].
References
[1] W. Strek, L. Marciniak, A. Bednarkiewicz, A. Lukowiak, R.
Wiglusz, D. Hreniak, Optics Express, 19, 14083-14092 (2011).
[2] W. Strek, L. Marciniak, P. Gluchowski, D. Hreniak, Optical
Materials, 35, 2013-2017 (2013).
4 Abstracts SIMFP 2016
25
SIMFP 2016
The Fifth Saudi International Meeting on Frontiers of Physicswww.jazanu.edu.sa/SIMFP2016
4.2 Quantum Optics and Laser Physics
Excitation mechanisms in a Hollow Cathode
Metal Vapor Laser (He-Cd+)
R. Periasamy
American University of Iraq, Sulaimani, Iraq
Metal vapor lasers (He-Cd+) operating in the negative flow region of a
low pressure gas discharge is to be presented. The operation conditions
and parametric studies of the laser will be discussed. The general
excitation processes in this design of hollow cathode has been studied by
emission spectroscopy [2]. The study gives the reasons for the negative
glow region of the discharge favoring all laser transitions. He-Cd+ laser
were able to operate in continuous mode giving seven laser transitions
simultaneously [1]. The seven transitions range from two in NIR, Red
and two green and one in blue and another in UV region.
The major excitation mechanisms for the blue and UV lines are expected
to be due to electron impact excitations but at high discharge currents
increases the population of the (He 23S) helium meta stables which are the
pump species of blue and UV transitions. The excitation mechanisms for
the infrared and red lines are by charge transfer and for the two green
lines it is partly by Penning and partly by radiative cascading. The
electron energy distribution in a hollow cathode discharge is very highly
non-Maxwellian and varies dramatically with discharge current, buffer
gas pressure and radial position of a hollow cathode. The laser light
coming out of the brewster angle cut windows are collected by a single
monochromator using an optical fiber. The results of the spectroscopic
investigation of the laser under different operating conditions and that of
the buffer gas discharge at the same conditions will be presented.
UV lasers are used in surface cleaning and processing. These UV sources
can also be used for photo-degradation of pollutants on the surfaces by
photo-catalysis or in advanced oxidation processes. Hollow cathode
discharges are known to have a very high ion and electron concentrations
along with high buffer gas metastable densities.
Submitting author: Ramalingam Periasamy, American University of
Iraq, Sulaimani. Kirkuk Road, Raparin, Sulaimani. Kurdistan Regional
Government, Iraq. Email: [email protected]
References
[1] R. Periasamy, H.H. Telle, J. Phys. D. Appl. Phys, 21, S167-170
(1988).
[2] R. Periasamy, H.H. Telle, J. Phys. D. Appl Phys, 22,440-443 (1989).
SIMFP 2016 4 Abstracts
28
Multi-wavelength Erbium-Doped Fiber Laser
Based on Polarization Dependent Loss and
Mach-Zehnder Interferometer using Photonic
Crystal Fiber
W. Abdulkhaleq1 and A. Hadi Al-Janabi
1
1 University of Baghdad, Baghdad, IRAQ
Erbium-doped fiber lasers (EDFL) have gain a lot of interest in the recent
years due to their potential application in field such as LIDAIR and
sensing [1, 2]. A unique method to generate multi-wavelength can be
carried out by suppressing mode competition via reducing the loss gain
saturation. In the present work a standard ring cavity EDFL has been
constructed. A 4.5 m of EDF (EDFC-980-HP from Nufern) was used as
an active gain medium and a 975 nm diode laser as a pump source. The
pump light was coupled into the ring cavity using 980/1550 wavelength
division multiplexer (WDM). A nonlinear PCF (NL-PCF) which has six
layers air holes with core and cladding diameters of 4.8 µm and 125 µm,
respectively. This NL-PCF was spliced with a single mode fiber to form
the Mach-Zehnder interferometer (MZI). Also polarization controller has
been use to adjust the polarization state inside the cavity.
An optical spectrum analyzer (Yokogawa-AG6370C) was used to record
and check the output power stability spectrum.
A dual wavelength of 1529.3 nm and 1532 nm were obtained with high
power stability for more than 60 min at room temperature. Triple and
quadratic wavelengths are also obtained but with a little bit laser power
stability.
Submitting author: Abdulhadi Mutasher Janabi , Institute of laser for
postgraduate studies, University of Baghdad, Jadirai, P.O.Box:47314,
E-mail: [email protected]
References
1. T. D. Vo and et al, Opt. Exp., 22, No. 2 (2014).
2. De. Young, R. I and Barnes, N. P. Appl. Optics, 49, 562-567,
(2010)
4 Abstracts SIMFP 2016
29
Characterization of 6-femtosecond laser pulses
using SPIDER
Walid Tawfik1,2
1King Saud University, Saudi Arabia
2Cairo University, Egypt
Broadband coherent ultraviolet to visible (UV -VIS) light sources could
be used to produce short laser pulses from picoseconds to sub-
femtoseconds. These pulses are needed for accurate excitation and time-
resolved pump-probe spectroscopy of the electronic resonance states for
large atoms and molecules [1, 2]. Supercontinuum generation has been
studied before in gases, liquids and glasses, and found to scales with the
physical properties of the nonlinear medium [3].
In this work, I studied the characterization of ultrafast pulses in the regime
of few-cycle pulses using spectral phase interferometry for direct electric-
field reconstruction (SPIDER) [4]. These pulses were optimized to reach
the transform limited 6-femtosecond pulse duration with high energy of 600
J at 1 KHz repetition rate. The pulses were generated due to
supercontinuum caused by self –phase modification (SPM) in neon gas
filled in a one meter hollow-fiber followed by two chirped-mirrors for
dispersion compensation. The pulse duration was observed by
reconstructed pulse intensity autocorrelation function and bandwidth was
measured using the SPIDER. The bandwidth found to achieve broad range
from 600 – 900 nm. Furthermore, it is found that the pulse duration and
bandwidth are affected by the pulse duration of the input femtosecond
pulses before the optical fiber and the pressure of the neon gas. The
observed results indicate that the SPM was enhanced for high neon pressure
of 2.5 atm. The obtained results may give an opportunity to monitor and
control ultrafast transit interaction in femtosecond chemistry
Submitting author: W., Tawfik, Department of Physics and Astronomy,
College of Science, King Saud University, Riyadh 11451, SAUDI
ARABIA; 2Department of Environmental Applications, National Institute
of Laser NILES, Cairo University, Cairo, EGYPT.
E-mail: [email protected].
References
[1] M. Drescher, M. Hentschel, R. Kienberger, M. Uiberacker, V.
Yakovlev, A. Scrinzi, T. Westerwalbesloh, U. Kleineberg, U.
Heinzmann, and F. Krausz, Nature 419, 803–807 (2002).
SIMFP 2016 4 Abstracts
30
[2] G. Sansone, F. Kelkensberg, J. F. Pérez-Torres, F. Morales, M.
F. Kling, W. Siu, O. Ghafur, P. Johnsson, M. Swoboda, E.
Benedetti, F. Ferrari, F. Lépine, J. L. Sanz-Vicario, S.
Zherebtsov, I. Znakovskaya, A. L’Huillier, M. Y. Ivanov, M.
Nisoli, F. Martín, and M. J. J. Vrakking, Nature 465, 763–766
(2010).
[3] M. Kolesik, G. Katona, J. V. Moloney, and E. M. Wright, Phys.
Rev. Lett. 91, 043905-043908 (2003).
[4] Walid Tawfik, Ukr. J.Phys. Opt., 16, 111-119 (2015).
4 Abstracts SIMFP 2016
31
Numerical realizations of optical centroid
measurements
Qurrat-ul-ain Gulfam1 and Jӧrg Evers
2
1Jazan University, Saudi Arabia and
2Max-Planck-Institut fuer
Kernphysik, Heidelberg, Germany
Optical imaging methods are typically restricted to a resolution of order of
the probing light wavelength λ by the Rayleigh diffraction limit. This
limit can be circumvented by making use of correlated N-photon states,
having an effective wavelength λ/N. But the required N-photon detection
usually renders these schemes unfeasible. In [1], an imaging scheme is
proposed that replaces the multi-photon detectors by an array of single-
photon detectors. It has been predicted in [1] that using a post-processing
of the measured data, the resolution scaling of λ/N can be achieved for
certain states of light. A first proof-of-principle experiment has also been
performed [2]. We aim at extending the approach to a broader class of
input states, at finding optimum detection strategies, and at quantitatively
studying the approach. For this, complementary to the existing
approximate analytical results, we explore the approach using
"experimental'' data obtained from numerical experiments by sampling
detection events from the initial state wave function. We analyze the
resolution in dependence on the detector size to find optimum parameters
for an experimental implementation. We also find indications that the
scheme might work for a broader class of states than predicted based on
the analytical estimates [3].
Submitting author: Q. Gulfam, Jazan University, Faculty of Science,
Department of Physics, P. O. Box 114, Gizan 45142, Saudi Arabia.
E-mail: qgulfam @ jazanu.edu.sa.
References [1] M. Tsang, Phys. Rev. Lett., 102, 256301 (2009).
[2] H. Shin, Phys. Rev. Lett., 107, 083603 (2011).
[3] Q. Gulfam and J. Evers, Phys. Rev. A 87, 023804 (2013).
SIMFP 2016 4 Abstracts
32
A Novel Model of Dynamics of Semiconductor
Laser Subject to Double Reflector Feedback
Salah Abdulrhmann
Jazan University, Jazan, Saudi Arabia and Assiut University, Egypt
We proposed a new and unified theoretical modeling of the performance of
semiconductor lasers subject to double reflector feedback. The proposed model
is a new modification to the time-delay rate equations of the semiconductor
lasers under single reflector feedback [1]. The present simulation is performed
using the bifurcation diagram, temporal trajectory, phase portrait, and fast
Fourier transformation of the laser intensity. The results show that, adding the
second reflector attracts the periodic oscillation, period doubling oscillation and
chaos induced by the first reflector to a route-to-continues wave operation. The
double reflector feedback induced chaos is more irregular than that induced by
single reflector feedback and the power spectrum of this chaos state does not
reflect information on the geometry of the device as shown in the figure below.
Possibilities of using chaotic operation induced by double reflector feedback in
chaotic (secure) optical data encryption [2], were theoretically predicted.
Chaos power spectrum when Lex1= 3 cm and Lex2 = 7 cm with: (a) Kex1 = 0.04 and Kex2 = 0.018, (b)
Kex1 = 0.029 and Kex2 = 0.03.
Submitting author: Salah Abdulrhmann, Jazan University, Faculty of Science,
Department of Physics, P. O. Box 114, Gizan 45142, Kingdom of Saudi Arabia,
E-mail: [email protected]
References
[1] S. Abdulrhmann, Ahmed M, Okamoto T, Ishimori W, Yamada M. IEEE J
Select Topics Quantum Electron, 9, 1265–74 (2003).
[2] Y. Hong, M. W. Leeand K. A. Shore, Proc. SPIE 5614, 72, (2004).
4 Abstracts SIMFP 2016
33
Pair Correlations in Finite Charged-Sheet
Structure
A. A. Kamli1 and A. M. Hatta
2
1Jazan University, Saudi Arabia and
2Institut Teknologi Sepuluh
Nopember, Indonesia
The presence of matter such as a dipole near a surface at the nanoscale
leads to observable changes of its basic properties. A de-excitation rate
will change drastically in the presence of surfaces because the mode
density is restricted by the boundary conditions. In this work, we present
pair correlations of two dipole emitters in the finite ordered charged-sheet
structure (FCSS) as shown in Fig. 1. The FCSS consists of finite numbers
of charged-sheets separated by dielectric layers [1]. The dispersion
relation and the corresponding field distributions of a general structure are
determined using a transfer matric method [2]. We calculate the de-
excitation rate of a dipole emitter coupled to the quantized fields
supported by such a structure. The de-excitation rate is calculated for
different numbers of charged-sheets, varying excitation frequencies, and
varying emitter positions. Afterward, we analyze the pair correlations that
involve two dipole emitters and localized at the FCSS. We evaluate the
rates of de-excitation corresponding to a pair of states, namely symmetric
state and antisymmetric state. The evaluation includes the dipole
orientation from each other, their positions in the structure and the
parameters effect of FCSS. This study of field-matter interaction in the
FCSS is useful for the development of quantum-information processing
and the realization of quantum-computing.
Figure 1: Two dipole emitters of identical two-level atoms localized at the
surface of FCSS
SIMFP 2016 4 Abstracts
34
Submitting author: A. M. Hatta, Institut Teknologi Sepuluh Nopember,
Faculty of Industrial Technology, Department of Engineering Physics,
Surabaya, Indonesia.
E-mail: amhatta @ gmail.com.
References
[1] M. G. Cottam and D. R. Tilley, Introduction to surface and
superlattice excitations (CRC Press, 2004)
[2] A. M. Hatta, Ali. A. Kamli, M. Babiker, Phys. Rev. A, 89, 033816
(2014).
4 Abstracts SIMFP 2016
35
SIMFP 2016
The Fifth Saudi International Meeting on Frontiers of Physicswww.jazanu.edu.sa/SIMFP2016
4.3 Photonics and Plasmonics
Optical Properties of the New Organic–
Inorganic Hybrid (4-Acetylanilinium)
Tetrachlorocadmiate
K. Guidara, A. Jellibi and I. Chaabane
Sfax University, Tunesia.
The optical properties of Bis (4-acetylanilinium) tetrachlorocadmiate
compound are studied using phase modulated spectroscopic ellipsometry
(PMSE). The extinction coefficient, refractive index, dispersion parameter
and both the real and imaginary parts of the dielectric permittivity of
Bis (4-acetylanilinium) tetrachlorocadmiate compound are calculated.
The results are discussed and the single-effective- oscillator model is used
to fit the calculated data to the experimental ellipsometric spectra. Thus
the values of the dispersion energy and single-oscillator strength are
determined and the refractive index is analyzed using Cauchy distribution
[1].
Submitting author: K. Guidara, Sfax University, Faculty of Science,
Department of Physics, P. O. Box 1171, Sfax 3000, Republic of Tunesia,
E-mail: [email protected]
References
[1] H.G. Tompkins, W.A. McGahan, Spectroscopic Ellipsometry and
Reflectometry, John Wiley & Sons Inc., New York, 1999.
SIMFP 2016 4 Abstracts
38
Er/Yb codoped ZnO thin films as an efficient
antireflection and downconvertor layer for c-Si
cells applications
R. Elleuch1, R. Salhi
2, J.-L. Deschanvres
3, R. Maalej
1
1 Faculté des Sciences de Sfax, Université de Sfax and
2 Ecole Nationale
d’ingénieurs de Sfax, Université de Sfax, Tunisia
This work is devoted to the solar cell efficiency enhancement by
depositing a nanostructured luminescent rare earth doped ZnO layer in
front of the Si solar cell. This layer plays is multifunctional role: first as
UV converter to lower energy (downconversion process) and second as
antireflective film for light trapping. Interest in zinc oxide doped rare
earth thin films is nourished by the wide spectrum of ZnO applications in
advanced technologies, in particular Light emitting diodes and solar cells
[1]. We propose the successful aerosol assisted chemical vapor
deposition liquide source method to deposit hexagonal phased
Er3+
,Yb3+
:ZnO/Si thin film with large surface (3x3 inch) as an
antireflection and down converter layer for boosting c-Si solar cell
efficiency. Moreover, annealing treatments in air atmosphere improves
the quality of the films and, thanks to the better crystallinity and
enhanced optical properties, the transmission of the films became higher
[2]. Indeed, intense and well resolved infra-red emission at 1000 nm of
Yb3+
ions was obtained originating from an Yb-Er transfer energy
process, which can be absorbed by the c-Si solar cell (figure 1).
ZnO:Er,Yb shaped nanocones films have decreased the reflectance of the
c-Si from 35% to the 12% arisen from a trapping the incoming light by
multiple reflexion. The obtained results demonstrate that this film
enhance the c-Si solar cell efficiency by light trapping and spectrum
shifting when it is placed in front of the cell.
Figure1: Reflectance and Down conversion of ZnO:Er,Yb annealed
films.
4 Abstracts SIMFP 2016
39
Submitting author: Ramzi Maalej, Laboratoire Géoressouces,
Matériaux, Environnement et Changements Globaux, Sfax University,
Faculty of Sciences of Sfax, 3018 Sfax,TUNISIA
E-mail: [email protected]
References:
[1] Elleuch, R., Salhi, R., Maalej, N., Deschanvres, J.-L., Maalej, R.
Mater. Sci. Engin. B 178, 1124– 1129 (2013).
[2] Elleuch, R., Salhi, R., Maalej, N., Deschanvres, J.-L., Maalej, R.
Phys; Lett. A 378, 1733–1738 (2014).
SIMFP 2016 4 Abstracts
40
Pr3+:BaY2F8 Crystal Nanoparticles (24 nm)
Produced by High-Energy Ball Milling:
Spectroscopic Characterization and Comparison
with Bulk Properties
Rania Hakim 1 Alessandra Toncelli
2 Ramzi Maalej
3
1,3Sfax University, Tunisia and
2University of Pisa, Italy.
Nanocrystals (NC) of Pr3+
:BaY2F8 with average diameter of 24 nm have
been successfully prepared by high energy ball milling. The method is
versatile, easily scalable, and does not require the use of surfactants or
catalysts. NC were prepared starting from high quality single crystal
pieces, and their spectroscopic features are analyzed and compared with
those of a single bulk crystal. Under 445 nm excitation, we recorded the
10 K and room temperature emission spectra of the two samples. The
spectra show the same peak positions and width, and this means that the
milling process does not introduce substantial modifications to the crystal
structure. Besides, there are strong differences in the relative intensity of
the lines emitted toward different lower lying levels in the two samples. In
particular, the high-energy transitions seem to be hyper intense in the NC
with respect to the bulk sample. On the contrary, the emission lines that
end at excited levels are less intense in the NC. In addition, the time
evolution of the 3P0 decay shows striking differences between the
nanosized materials and the bulk sample. Despite the exponential decay of
the latter luminescence (τ = 43 μs), NC possess a strong nonlinear
component with a lifetime much shorter than in the bulk. Calculations
show that nearly 89% of the excited ions contribute to the short-time
decay, which is attributed to ions residing near the NC surface.
Figure 1 : Room-temperature fluorescence decay
curves of NC and crystal.
Figure 2 : Room temperature emission
spectra of 1.25% Pr:BaYF NC and bulk
crystal.
4 Abstracts SIMFP 2016
41
Submitting author : Rania Hakim, Sfax University, National engineering
school of Sfax, Department of genius matrials,
E-mail:[email protected]
SIMFP 2016 4 Abstracts
42
Calculation of Onset Voltage of Sliding
Discharge over a Dielectric Barrier
M Abdel-Salam1, A Hashem
2 and H El-Hawary
2
Assuit University, Egypt
Several studies have shown that a sliding plasma discharge may be used
as an actuator for air flow control. The electrical properties of this
discharge were observed experimentally. This paper is aimed at
calculating the onset voltage of a sliding discharge established between
two electrodes at the upper and bottom surfaces of a dielectric barrier
plate.
This calls for electric field calculation at the barrier surface using the
charge simulation method. The upper electrode is stressed with respect to
the bottom one being grounded. Therefore, the two electrodes are charged.
Each electrode is simulated by a set of line chargers extended parallel to
the electrode axis inside the electrode. The interface between the
dielectric and surrounding air is simulated by two sets of line charges, one
in the dielectric plate and the other in the air, extending parallel to the
plate axis and distributed over contours inside and outside the interface.
To determine the unknown simulation charges, a set of equations equal in
number to that of the unknowns is formulated. This set satisfies boundary
conditions at boundary points over the electrode and plate boundaries.
These boundary conditions are Dirichlet condition at electrodes and
Neumann condition at the interface between the dielectric plate and
surrounding air. This is in addition to the equality condition of air-side and
dielectric-side potentials at the interface. Simultaneous solution of the
formulated equations determines the unknown simulation charges and the
resulting electric field in the vicinity of the stressed electrode. Where the
electric field is high an electron avalanche develops emitting photons
which originate successor avalanches within the ionization-zone
surrounding the stressed electrode. The onset voltage of sliding discharge
is the voltage applied to the stressed electrode which results in self
sustenance of the avalanche growth in the vicinity of the electrode over
the surface of the dielectric plate. With the increase of the permittivity of
the dielectric barrier the charge on the electrode increases with a
subsequent increase of the electric field and decrease of the onset voltage
of sliding discharge. With the increase of thickness of the dielectric
barrier, the charge on the electrode decreases with a subsequent increase
of the onset voltage of the sliding discharge. With the increase of the
interspacing between electrodes, the electric field decreases with a
subsequent increase of the onset voltage.
4 Abstracts SIMFP 2016
43
Submitting author: M. Abdel-Salam, Assuit University, Faculty of
Engineering, Department of Electrical Engineering, Assuit, Egypt.
E-mail: [email protected]; [email protected]
SIMFP 2016 4 Abstracts
44
Design of all Optical AND Gate based on
Polystrene/SiO2 1D Nonlinear Photonic Crystal
Arun Kumar1, Rajkumar
2
1Amity University, India
2MRK Institute of Engineering & Technology, India.
In this present research, design for an all-optical logic AND gate based on
polystrene/SiO2 1D nonlinear photonic crystal has been proposed.
Simulation of the device and analysis of its performance has been carried
out using transfer matrix method. Detailed analysis of the proposed device
shows that this device could have potential application in high speed
telecommunication network. Demand for all-optical signal processing
techniques is rapidly increasing, with the development of high-speed
telecommunication network. The maximum speed of switching of
electronic logic gates is on the order of 1010
Hz, limiting the speed and
bandwidth of the network. On the other hand, switching speed of optical
logic gates is on the order of 1014
Hz. So far, several techniques have been
investigated to realize various all-optical logic functions [1-2]. These
approaches have shown some advantages, but are difficult to operate at
very high data rate. Recently, designs of all-optical logic gates based on
photonic crystals are also reported [3-4]. In the present research, the
propagation of an electromagnetic wave in a polystrene/SiO2 based on 1D
nonlinear photonic crystal has been investigated and suggested a design of
an all-optical AND gate based on the properties of such crystals. Structure
and scheme of the proposed design has been presented in Figure 1, and
truth table in Table 1. The nonlinear layers of the structure considered
here have different refractive index at high intensity. Mean wavelength of
low intensity electromagnetic wave (I1) falls inside the PBG in absence of
high intensity wave, and outside the gap in presence of high intensity
wave (I2). This leads to the propagation of low intensity wave (I1) without
reflection through the structure in presence of I2. This property can be
exploited for the design of an all-optical AND gate.
4 Abstracts SIMFP 2016
45
Figure 1: Schematic diagram of the proposed structure.
Table 1: Truth table for an all optical AND gate
Input I1 Input I2 Output O
Power
(MW/cm2)
Logic
level
Power
(GW/cm2)
Logic
level
Trans-
mission(%)
Logic
level
0 0 0 0 0 0
0 0 25 1 0 0
1 1 0 0 0 0
1 1 25 1 100 1
Submitting Author: Arun Kumar, AITEM, Amity University, Uttar
Pradesh, India.
Email: [email protected]
References
[1] J. Y. Kim, J. M. Kang, T. Y. Kim, S. K. Han, J. Lightwave
Technol., 24, 3392-3399 (2006).
[2] T. A. Ibrahim, R. Grover, L. C. Kuo, S. Kanakaraju, L. C.
Calhoun, P. T. Ho, IEEE Photon. Technol. Lett., 15, 1422-1424
(2003).
[3] H. Zou, G. Q. Liang, H. Z. Wang, J. Opt. Soc. Am. B, 25, 351–360
(2008).
[4] Y. Liu, F. Qin, Z. M. Meng, F. Zhou, Q. H. Mao, Z. Y. Li, Optic
Express, 19, 1945-1953 (2011).
SIMFP 2016 4 Abstracts
46
Nanoplasmonics based solar cells
E.A. Dawi
Jazan University, Saudi Arabia
Metallic nanoparticles to study and improve semiconducting nanowire
based solar cells. The plasmon resonance is a collective oscillation of
conduction electrons in a metal nanostructure, which can be excited by
light. It leads to interesting and potentially useful interactions between
nanoparticles and light; in particular, the electric field in the vicinity of the
nanoparticle is enhanced compared to that of the incident light. This work
focuses on employing the enhanced field to (i) improve light absorption in
GaAs/AlGaAs/InAlGaAs nanowire p-i-n junction cells and (ii) to sense
absorption and diffusion within amorphous silicon (a-Si:H) films used for
tandem solar cells.
In the first part, optical and photoconductivity measurements were
performed on nanowire structures with and without Au plasmonic
nanoparticles, in order to quantify the light absorption caused by the
enhanced near-field around the nanoparticles. The effect was studied for
(i) systems of Au nanoparticle, core-shell, nanoring and nanorods/wires
systems coated with various thicknesses. Finite-element time domain
method calculations were used to connect observed experimental features
to specific plasmon resonance modes, and to explain mechanisms of
absorption enhancement within active layer structures.
Submitting author: E.A. Dawi, Jazan University, Faculty of Science,
Department of Physics, P. O. Box 114, Gizan 45142, KINGDOM OF
SAUDI ARABIA.
Email: [email protected]
References
[1] M. Notarianni, K.Vernon, A. Chou, M. Aljada, J. Liu and Nunzio
Motta, Solar Energy, 106, 23–37 (2014).
4 Abstracts SIMFP 2016
47
SIMFP 2016
The Fifth Saudi International Meeting on Frontiers of Physicswww.jazanu.edu.sa/SIMFP2016
4.4 Atomic and Molecular Physics
A Parabolic Model of Atomic and Nuclear
Structure
Khalid Abdel Fattah M. Osman
Abdulatif Alhamad University of Technology, Sudan
A newly developed mathematical model of atomic structure relates the
properties of the paraboliod to the atoms' shells and orbits Fattah [1].
Further search in relating n shells with orbits and nucleus to the properties
of a series of concentric parabolic curves showed a focal orbit of unit
diameter for each parabaloid n2/4 distant from the vertex. The centroid of
each parabaloid is 3n2/20 distant and the focus of the parabola is 1/4n2
distant. The parabolas represent the atomic shells, with orbits in a shell
equal to the square of shell number n2, is considered to simulate an atom.
Electrons configuration was developed representing distribution of
electrons in the orbits. Nucleons were related the centroids representing
the massive part of the atom.
The frequencies of the visible spectra, infrared, ultraviolet and x-rays
were found to be related to the electronic transitions. Moreover, the model
simulates the recent periodic table in more details. In particular, the
transition elements were clearly presented. It is an important addition as it
opens doors for revealing new symmetries within elements.
Submitting author: Khalid Abdel Fattah M. Osman, the Abdulatif
Alhamad University of Technology, SUDAN
E-mail: khdfattah @ gmail.com
References
[1] Fattah K. A., “A Visualized Mathematical Model of Atomic
Structure”. Journal of Science and Technology, 13 (3), 27-30
(2013).
SIMFP 2016 4 Abstracts
50
Ytterbium to Uranium empirical L1 sub-shell
fluorescence yields
M. Nekkab1,2
, Y. Sahnoune3,4
, A. Kahoul3,4
, B. Deghfel1,5
,
F. Khalfallah3,4
, V. Aylikçi6, N. Küp Aylikçi
7 and D.E. Medjadi
8
1,5University of Mohamed Boudiaf, Algeria,
2Setif1 University, Algeria.
3,4Mohamed El Bachir El Ibrahimi University, Algeria,
6,7Mustafa Kemal
University, Turkey and 8Ecole Normale Supérieure Vieux-Kouba, Algeria
The analytical methods based on X-ray fluorescence are advantageous for
practical applications in a variety of fields including atomic physics, x-ray
fluorescence surface chemical analysis and medical research. So the
accurate fluorescence yields ( Lω ) are required for these applications.
Several attempts were made in the past to calculate L1 shell fluorescence
yields ( L1ω ) using a theoretical model or by fitting the experimental data
(empirical and semi-empirical formula) for a wide range of elements.
In this study, new parameters were presented for the calculation of L1 sub-
shell fluorescence yields for targets from 70Yb to 92U. The database used
in this work relies on the different compilations and papers available in
the literature published during the period 1959 till 2015.
Taking into account the famous formula
n
n
n
1/4Zbω1ω
the empirical L1 sub-shell fluorescence yields were derived by fitting
these experimental data.
The analytical function used for the interpolation is the following third
degree polynomial:
3
0n
n
n
1/4
exp-L1exp-L1 Zaω1ω
Where, exp-L1ω is the experimental data. The experimental data
1/4
exp-L1exp-L1 ω1ω
are presented in the Figure 1 (dots) as a function of
the atomic number Z.
The same figure shows the fitting coefficients results (full line).
Calculated empirical L1 sub-shell fluorescence yields have been compared
with those reported by Krause [1], Puri et al. [2], Campbell [3] and
Aylikci et al. [4]. The results are found to be in good agreement with the
other works.
4 Abstracts SIMFP 2016
51
Figure 1: Reduced L1 sub-shell fluorescence yields as a function of the atomic number.
Submitting author: M. S., Nekkab, Mohamed Boudiaf University,
Faculty of Science, Department of Physics, 28000, M’Sila, Algeria,
E-mail: [email protected]
References: [1] M.O. Krause, J. Phys. Chem. Ref. Data, 8, 307-327 (1979).
[2] J.L. Campbell, Atom. Data Nucl. Data Tables, 85, 291-315 (2003).
[3] S. Puri, D. Mehta, B. Chand, N. Singh, P.N. Trehan, X-ray
Spectrometry, 22, 358-361 (1993).
[4] V. Aylikci, A. Kahoul, N. Kup Aylikci, E. Tiraşoğlu, İ.H. Karahan, A.
Abassi, M. Dogan. Radiation Physics and Chemistry, 106, 99-125
(2015).
SIMFP 2016 4 Abstracts
52
Direct Spectral Analysis of Tea Samples using
266 nm UV Pulsed Laser-Induced Breakdown
Spectroscopy and Cross Validation of LIBS
Results with ICP-MS
M.A. Gondal, Y.B. Habibullah, Umair Baig, L.E. Oloore
King Fahd University of Petroleum and Minerals, Saudi Arabia
Tea is one of the most common and popular beverages spanning vast array
of cultures all over the world. The main nutritional benefits of drinking
tea are its anti-oxidant properties, presumed protection against certain
cancers, inhibition of inflammation and possible protective effects against
diabetes. Laser induced breakdown spectrometer was assembled as a
powerful tool for qualitative and quantitative analysis of various brands of
tea samples using 266 nm pulsed UV laser. LIBS spectra for six brands of
tea samples available in the Kingdom in the wavelength range of 200-900
nm were recorded and all elements present in our tea were identified. The
major toxic elements detected consecutively in several brands of tea
samples were bromine, chromium and minerals like iron, calcium,
potassium and silicon. The spectral assignment was conducted prior to the
determination of concentration. For quantitative analysis, calibration
curves were drawn for each element using standard samples prepared in
known concentration in the tea matrix. The plasma parameters (electron
temperature and electron density) were also determined prior to the tea
samples spectroscopic analysis. The concentration of iron, chromium,
potassium, bromine, copper, silicon and calcium detected in all tea
samples were between 378-656, 96-124, 1421-6785, 99-1476, 17-36, 2-11
and 92-130 ppm respectively. The limits of detection estimated for Fe, Cr,
K, Br, Cu, Si, Ca in tea samples were 22, 12, 14, 11, 6, 1 and 12 ppm
respectively. To further confirm the accuracy of our LIBS results, we
determined the concentration of each element present in tea samples by
using standard analytical technique like ICP-MS. The concentrations
detected with our LIBS system are in excellent agreement with ICP-MS
results. The system assembled for spectral analysis in this work could be
highly applicable for testing the quality and purity of food and also
pharmaceuticals products.
*This work was supported under project # RG 1421 by KFUPM.
4 Abstracts SIMFP 2016
53
Submitting author: M.A. Gondal, Department of Physics, King Fahd
University of Petroleum Minerals, Dhahran, KINGDOM OF SAUDI
ARABIA, E-mail: [email protected]
SIMFP 2016 4 Abstracts
54
E-H transition in a pulsed inductively coupled
argon plasma
Zaka ul Islam Mujahid1
1Jazan University, Saudi Arabia
The measurements in a pulsed inductively coupled plasmas system (ICPs)
show that the time variation of the total emission from the discharge has a
spike-like structure at the E-H transition i.e. it first achieves maximum
and later decreases to a lower value. The behavior is understood here
using the 2D images of the discharge.
ICPs are widely used for micro-electronics processing applications [1].
They can operate in two distinct operational modes as a function of
applied power i.e. E and H modes while the transition between the two
modes is well-known as the E-H transition. ICPs are often pulsed by
periodic switching of the plasma power. The pulsed operation of the
discharge extends the typical plasma parameter regime possible in the
continuous discharge [2], and offers multiple benefits such as lower
substrate damage, better process uniformity and selectivity etc. [3].
Here, the pulsed operation of argon ICPs is investigated using phase and
space resolved optical emission spectroscopy (PROES). The experimental
setup is a standard inductively coupled GEC cell driven by a 13.56 MHz
power supply. The power supply is pulsed at 1 kHz and the duty cycle is
50 %. The PROES provides a non-invasive access to the changes in the
plasma with excellent spatial and temporal resolution. Emission from the
argon 750.4 nm and 751.5 nm (4p2[1/2]→ s
2[1/2]
0 and 4p
2[1/2]→
s2[1/2]
0) emission lines is detected using an intensified CCD camera
(Andor, iStar), through an optical interference filter. The time dependent
modulation of the emission reflects the dynamics of electrons with
energies greater than ~ 13.5 eV; the threshold of the observed excited
states. The time dependent emission from the excited states shows a spike
like structure at the E-H transition which is consistent with earlier
simulation [4]. The 2D images of the discharge reveal that at the time of
maximum emission, the discharge structure becomes bright and sharp,
which later decreases in brightness and becomes diffusive.
Submitting author: Z., Mujahid, Jazan University, Faculty of Science,
Department of Physics, P. O. Box 114, Gizan 45142, Saudi Arabia
E-mail: [email protected].
4 Abstracts SIMFP 2016
55
References
[1] T. Makabe and Z. Petrovic Plasma electronics: applications in
microelectronic device fabrication. (Inst of Physics Pub Inc,
2006).
[2] M. Osiac, T. Schwarz-Selinger, D. O'Connell,B. Heil, Z. L.
Petrovic, M. M. Turner, T. Gans, and U. Czarnetzki, Plasma
Sources Sci. Technol. 16, 355-363 (2007).
[3] S. Samukawa, and K. Terada, Journal of Vacuum Science &
Technology B: Microelectronics and Nanometer Structures 12,
3300 (1994).
[4] P. Subramonium, (University of Illinois, 2003).
SIMFP 2016 4 Abstracts
56
The role of Gouy phase on the mechanical fffects of
Laguerre-Gaussian light interacting with atoms
V. E. Lembessis,1 , M. Babiker,2 , D. Ellinas,3
1King Saud University, Saudi Arabia;
2University of York, United
Kingdom and 3Technical University of Crete, Greece
We consider the case of Laguerre Gaussian (LG) light with high values of
radial, p, and azimuthal index ℓ. We focus on the effects of the Gouy
phase, together with other phase contributions due to the curvature in a
Laguerre Gaussian (LG) light when it interacts with atoms at near
resonance. We show here that these phase anomalies, which are normally
ignored in such contexts, become significant for LG light of high winding
numbers and when the atoms are trapped in the vicinity of the focus
plane. The phase anomalies amount to a significant reduction of the axial
wavevector and thus lead to additional contributions to the phase gradient
in the vicinity of the focus plane. This reduction in the wave vector bring
in significant changes in radiation pressure fore, momentum diffusion
coefficients and diffraction when atoms interact with an LG beam.
Submitting author: V. E. Lembessis, 1Department of Physics and
Astronomy, College of Science, King Saud University, Riyadh 11451,
P.O. Box 2455, Saudi Arabia. Email: [email protected]
4 Abstracts SIMFP 2016
57
High power laser from an oligomer thin film
Saradh Prasad1,2,3
, D. Devaraj
3, M. S. AlSalhi
1,2, and V.Masilamani
1,2,*
1King Saud University,
2Research Chair on laser diagnosis of
cancers, King Saud University. 3Kalasalingam University, India
The laser action from a conductive oligomer 9,9,9',9',9'',9''-hexakis(octyl)-
2,7',2',7''-trifluorene (HOTF) has been demonstrated in this study. First
absorption spectra were studied for HOTF in benzene under a wide range
of thicknesses. The spectra showed that there was only one peak at 355
nm under a wide range of thicknesses indicating the absence of
dimerization. The fluorescence spectra for lower thicknesses showed two
peaks at 390 nm and 410 nm, which could be attributed to the monomer
and the excimer. At higher thicknesses, the peak at 390 nm almost
vanished and the dominant peak was at 410 nm with a hump at 435 nm.
Laser action was tested in a transverse cavity configuration where the
conducting oligomer was pumped by laser pulses from the third harmonic
of an Nd:YAG laser (355 nm). It could be seen that there were two
amplified spontaneous emission (ASE) peaks at 390 and 410 nm. These
peaks could be attributed to the monomer and excimer of the HOTF
oligomer. Under suitable thickness and pump power, we were able
observe the ASE peak at 435 nm corresponding to the hump in the
fluorescence spectra, this could be attributed to double excimer. The
power of ASE and the photo-chemical stability were remarkably high.
This trend for the oligomer is entirely different from its conjugated
polymer counterpart poly(9, 9-dioctylfluorenyl-2,7-diyl) (PFO). This is
perhaps the first report on ASE from an excimeric state of the conjugated
oligomer HOTF in liquid solution.
Submitting author: R. Saradh., Prasad, King Saud University,
Department of Physics and Astronomy, College of Science, P. O. Box
2455, Riyadh, 11451, Saudi Arabia.
E-mail: saradprasad@gmail.
SIMFP 2016 4 Abstracts
58
SIMFP 2016
The Fifth Saudi International Meeting on Frontiers of Physicswww.jazanu.edu.sa/SIMFP2016
4.5 Quantum Information Science
Dynamics and transmissivity of optomechanicalsystem containing a single two-level atom
Farooq Khan and Xuexi Yi.Dalian University of Technology Dalian China
Quantum optomechanics is an interdisciplinary grooming research fieldcombining the principles of quantum mechanics with quantum optics. Op-tomechanics has attained a great attention in the last decade, which explainsthe quantum mechanical interaction between electromagnetic radiation andmechanical degrees of freedom [1-7]. Optomechanics enhances the un-derstanding of basics of physics ranging from classical physics to quan-tum physics. Many of questions potentially can be answered within thisnew field optomechanics, which better the understanding of the fundamen-tals of quantum mechanics. The basic principles of optomechanics lead tofundamental investigations and potential applications. Optomechanics notonly contributed to the field of science but also to the exploration of quan-tum regime of the mechanical devices and applications. These applicationsare the precision measurement of small displacements, forces and massesi.e.(quantum-sensitive force detection), available on-chip technology, thequantum interfaces between solid state quantum bits and photons with ap-plications in information storage and processing. Laser-cooling (side-bandcooling), amplification and back action evasion are also the amazing appli-cations of optomechanics. Generating superposition states, entanglementof mechanical motion and light, observations of the optical spring effectsoptical nonlinearity and bistability, observation of mechanically inducedoptical transparency [8, 9] and ponderomotive squeezing are the uniquephysical phenomena studied in optomechanics [10, 11]
In this article (Presentation), we take an optomechanical cavity con-taining a single two-level atom. We report on the cavity optomechanicalsystem in which a field of single mode, an arbitrary single two-level atomand a mechanical oscillator couple to the cavity field. The analytical andnumerical calculations of dynamics and the transmission intensity of thesystem are the main results. We focus on the study of dynamics and trans-mission of the optomechanical cavity on pure theoretical basis. We hope,it will attract much attention of the experimentalists in the field of quantumoptomechanics and quantum information.
Submitting author: Farooq Khan, School of Physics and OptoelectronicTechnology, Dalian University of Technology, P. O. Box 116024, Dalian
SIMFP 2016 4 Abstracts
60
411, P. R. China, Tel: +8613591770131;E-mail: [email protected]
References[1] T. Kippenberg and K. Vahala, Science 321, 1172 (2008).
[2] A. D. ÓConnell et al., Nature 464, 697 (2010).
[3] L. Tian and H. Wang, Phys. Rev. A 82, 053806 (2010).
[4] C. A. Regal and K. W. Lehnert, J. Phys.Conf. Ser. 264, 012025 (2011).
[5] V. Fiore, Y. Yang, M. C. Kuzyk, R. Barbour, L. Tian, and H. Wang,Phys. Rev. Lett. 107, 133601 (2011).
[6] Y.-D. Wang and A. A. Clerk, Phys. Rev. Lett. 108, 153603 (2012).
[7] J. Chan, T. M. Alegre, A. H. Safavi-Naeini, J. T. Hill, A. Krause,S.Gröblacher, M. Aspelmeyer and O. Painter, Nature 478, 89 (2011).
[8] G. S. Agarwal and S. Huang, Phys. Rev. A 81, 041803 (2010).
[9] S. Weis, et al., Science 330, 1520 (2010).
[10] D. Tarhan, et al., Phys. Rev. A 87, 013824 (2013).
[11] K. Qu and G. S. Agarwal, Phys. Rev. A 87, 031802 (2013).
4 Abstracts SIMFP 2016
61
Can quantum Teleportation be achieved without
the need for classical channel?
Mohammad Al-Amri
NCAP, KACST, Saudi Arabia
It is somewhat challenging and confusing to the conventional mindset to
say that teleportation can be achieved without classical channel. In this
talk, I will show how quantum teleportation can be achieved without the
need of classical channel. Our protocol does not require prearranged
entangled photon pairs and Bell measurements. By utilizing quantum
Zeno effect and couterfactuality, we can entangle and disentangle a
photon and an atom by non-local interaction. The quantum information is
completely transferred from atom to photon due to controllable
disentanglement processes. The bonus here is that there is no need to
cross check teleportation results via classical channels. It is worth
mentioning that this protocol is a complement of the conventional
quantum teleportation.
Submitting author: M. Al-Amri, National Centre for Mathematics and
Physics, KACST, Riyadh, Saudi Arabia.
E-mail: [email protected].
SIMFP 2016 4 Abstracts
62
Entanglement Percolation in Quantum Networks
Michael Siomau1,2
and Marc Timme1,3
1Max-Plank-Institute for Dynamics and Self Organisation, Germany,
2Jazan University, Kingdom of Saudi Arabia and
3Georg-August-Universität Göttingen, Germany
Rapid development of quantum technologies suggests that large networks
operating with quantum information are to take place of classical
communication networks in the nearest future. This succession may
substantially increase security and efficiency of the information exchange.
For efficient communication in a quantum network with certain
configuration of nodes and links, perfect long-distance entanglement
between arbitrary nodes is to be established. The search for efficient
strategies for the entanglement distribution may be based on percolation
theory [1], which describes evolution of network connectivity with
respect to some network parameters. Methods of classical percolation
theory has been already employed to find the best strategy for
entanglement distribution in a network of particular configuration leading
to the notion of classical entanglement percolation [2].Within this notion
the communication capacity of a network is described by its percolation
transition point, before which the probability to establish a path of perfect
entanglement links between two remote nodes is exponentially small,
while this probability is finite right after it. Since each network
configuration relates to the transition point, classical entanglement
percolation imposes the fundamental limit on the communication capacity
of the network. This limit can be overcame by global change of the
network configuration with local operations and classical communication
(LOCC) [2]. Instead of changing between classical networks
configurations, we suggest to employ LOCC to create quantum networks
with no classical analog and new percolation properties and introduce the
notion of quantum entanglement percolation [3]. To demonstrate the
striking communication advantages of the quantum entanglement
percolation over those offered by the classical entanglement percolation
in corresponding classical networks, we show non-exponential decay of
entanglement with the distance in the simplest possible network – the 1D
chain. Our result suggests not only quantum communication benefits, but
a serious revision of classical percolation theory in application to quantum
networks.
Submitting author: M. Siomau, Max-Plank-Institute for Dynamics and
Self Organisation, Am Faßberg 17, 37077 Göttingen, GERMANY,
E-mail: [email protected].
4 Abstracts SIMFP 2016
63
References
[1] D. Stauffer and A. Aharony, Introduction to Percolation Theory
(Taylor & Francis, ed. 2, 1994).
[2] A. Acin, J.I. Cirac and M. Lewenstein, Entanglement Percolation
in Quantum Networks, Nature Physics 3, 256-259 (2007).
[3] M.Siomau and M. Timme, Quantum Entanglement Percolation (in
preparation, 2015).
SIMFP 2016 4 Abstracts
64
SIMFP 2016
The Fifth Saudi International Meeting on Frontiers of Physicswww.jazanu.edu.sa/SIMFP2016
4.6 Materials Science
Geometry Influence of the Implant on the
Stresses Levels in the Bone under Dynamic
Loading
M.Benlebna1, B. Serier
2, S.Khalkha
3, B. Bachir Bouiadjra
4
1,2,3,4 University Djillali LIABES of Sidi Bel Abbes, Algeria
This study shows the variation of the equivalent stress induced by the
masticatory efforts along the bone as a function of the radius of the lower
part of the implant. It will be noted however, than the intensity of this
stress increases with the reduction of this parameter. Implant designers
must take into account what geometrical parameter. Several parameters
[size and conicity of the upper part thread form, size and radius of
curvature of the lower part] were analyzed in the aim of proposing a form
of implant minimizing stress in the living tissue [1, 2].
Figure.1: Components of model
Osseointegration is fundamental phenomenon of dental implantology. It
provides stability, reliability and durability of dental implants and
predictable long-term clinical success. The geometric form of the implant
is a determining parameter of the osseointegration and the intensity of the
forces exerted on the bone. This is the objective of this study. Indeed, we
show, numerically by the finite element method, the geometric parameters
of the implant condition the level and distribution of the stresses induced
in the bone by masticatory efforts, simulated here by a dynamic loading.
Several parameters [size and conicity of the upper part thread form, size
and radius of curvature of the lower part] were analyzed in the aim of
proposing a form of implant minimizing stress in the living tissue [3].
Mandibular
bone
Implant
Abutment
Crow
n
SIMFP 2016 4 Abstracts
66
Benlebna Mohammed: University Djillali LIABES of Sidi Bel Abbes,
Department of Mechanical Engineering, Laboratory of Mechanical
Physical of Materials (LMPM), BP 89,Cité Ben M’hidi, Sidi Bel Abbes
22000, Algeria.
E-mail: [email protected]
References
[1] Albrektsson, T.; Zarb, GA. Current interpretations of the
osseointegrated response: clinical signifycance, Int J
Prosthodont 6, 95-105 (1993).
[2] 2. Meijer, H.J.A.; Starmans, F.J.M.; Bosman, F.;Steen, W.H.A.
A comparison of finite element models of an edentulous
mandible provided with implants, J Oral Rehabil 20, 147-157
(1993).
[3] Achour , T.; Merdji , A.; Bachir Bouiadjra, B.; Serier , B.; Djebbar
N. Stress distribution in dental implant with elastomeric stress
barrier. 32: 282-290 (2011).
4 Abstracts SIMFP 2016
67
3D Digital Analysis of Defect Harmfulness in
polypropylene Pipes Put under Internal
Pressures.
Medjadji Bachir1 ,L. Aminallah
1,2 Benlebna. Mohammed
2 1University of Sidi Bel Abbes, Algeria
2University of Lille 1, France
It is well known that the concept of the J-integral is widely used as an
important elastic-plastic fracture parameter in structural integrity
assessments. In this study the three-dimensional finite element method is
used for computing the J-integral for semi-elliptical cracks in
polypropylene pipe under internal pressure. The J-integral was computed
for the extremities of the crack front (Ф=0 and Ф = π/2). The obtained
results show that the most dangerous type of crack in the cylinder is the
internal axial crack. The J- integral for this type of crack is largely higher
than the other crack configurations. It is also shown that the increase of
the applied pressure leads to an important increase of the J-integral.
Submitting author: Medjadji.Bachir , LMPM, Department of
Mechanical engineering, University of Sidi Bel Abbes, BP 89, Cité Ben
M’hidi, Sidi Bel Abbes, 22000, Algeria
E-mail: [email protected]
References
[1], Chapuliot, S. IQ form for tubes with a default semi-elliptical surface
longitudinal or circumferential, internal or external. Research Report -
CEA R-5900 (2000).
[2], Dhondt, G. Cutting of a 3D finite element mesh for automatic mode I
crack propagationcalculations. International Journal for Numerical
Methods in Engineering 42, 749-772 (1998).
SIMFP 2016 4 Abstracts
68
Conduction mechanism study by
overlapping large-polaron tunnelling model in
SrNiP2O7 ceramic compound
Makram Megdiche1, Carine perrin-pellegrinob
2, Mohamed
Gargouri1
1University of Sfax, Tunisia
2CNRS Université paul Cézanne Aix Marseille, France
The SrNiP2O7 compound was prepared by a solid-state reaction method.
Electrical properties and modulus analysis were studied using complex
impedance spectroscopy in the frequency range 200 Hz–5 MHz and
temperature range 609-728 K. The difference of the value of activation
energy for the bulk obtained from analysis of equivalent circuit (0.88 eV)
and modulus relaxation (0.77 eV) confirms that the transport is not due
from a simple hopping mechanism. The temperature dependence of the
power law exponent s and a.c conductivity ac is reasonably interpreted
by the overlapping large polaron tunneling (OLPT) model. The
mechanism of conduction is probably due from the displacements of the
Sr2+
ion in the tunnel-type cavities along the a and b axis [1].
Submitting author: Makram. Megdiche, University of Sfax, Faculty of
Sciences B.P. 1171, 3000, Sfax, Tunisia.
E-mail: [email protected].
References [1] Makram. Megdiche., Carine.Perrin-pellegrino., Mohamed.
Gargouri, Journal of Alloys and Compounds, 584, 209–215 (2014).
4 Abstracts SIMFP 2016
69
Hybrid -conjugated polymer/nanoparticles
solar cells
A. Benchaabane1,2
, J. Belhadi2, Z.Ben Hamed
1, M .Lejeune
2, M.A.
Sanhoury 1, F. Kouki
1, A. Zeinert
2 and H. Bouchriha
1
1Université Tunis El-Manar, Tunisia
2UFR des Sciences d’Amiens, France
Photophysics of hybrid nanostructures of -conjugated polymers and
inorganic nanoparticles remains a frontier area of research due to the
potentials of such structures in the development of optoelectronic, solar
and light harvesting devices [1,2]. In this work, optoelectronic properties
of P3OT:wt%CdSe composite films are investigated as a function of CdSe
nanoparticles (NPs) concentration (wt%) incorporated in the films. The
incorporation of CdSe NPs produces a quenching of the
photoluminescence and improves the performance of solar cells based on
the composites. These effects are explained in terms of exciton
dissociation and charge separation occurring at P3OT/CdSe interfaces
within the Förster formalism [3]. An exciton quenching rate constant of
1.4.10-10
cm3.s
-1 was determined using the Stern-Volmer equation. In
addition, scanning electron microscopy (SEM) images revealed that the
whole surface morphology was changed following CdSe NPs
incorporation, in agreement with FTIR spectra. The J-V characteristics of
ITO/P3OT:%CdSe/Al photovoltaic cells (see Figure 1) are also reported
and indicate a significant improvement of the photovoltaic parameters
cells, in particularly the conversion efficiency become 20 times greater
than the cell based on pure polymer.
Figure 1: -conjugated:wt% CdSe photovoltaic cell device
SIMFP 2016 4 Abstracts
70
Submitting author: Aida BENCHAABANE, El Manar University, Faculty of Science,
Department of Physics, El Manar, Tunis, Tunisia
Picardie Jules Verne University, Faculty of Science, Department of
Physics, France.
E-mail: [email protected]
References
[1] Z.BenHamed, N.Mastour, A.Benchaabane, F.Kouki,
M.A.Sanhoury, H.Bouchriha, Journal of Luminescence, 170, 30–
36 (2016).
[2] S. Bhattacharyya, A. Patra, J. Photochem. Photobiol. C:
Photochem. Rev, 20, 51-71 (2014).
[3] Jayesh Patel, FrejMighri, AbdellahAjji, TapasK.Chaudhuri, Nano
Energy, 5, 36–51 (2014).
4 Abstracts SIMFP 2016
71
Current conduction mechanism of 4H-SiC MOS
devices using multidimensional minimization
system program
Z. Ouennoughi1 and N. Rouag
2
Université Ferhat Abbas Sétif, Alegria
The present work presents an evaluation approach which enables the in-
depth analysis of current–voltage (I–V) characteristics of MOS devices to
determine their current transport mechanisms using a multidimensional
minimization system program. Exemplarily, the current transport
mechanisms were determined for a 4H-SiC MOS structures by fitting the
analytical expressions for different current transport mechanisms to
experimental I–V data in a wide range of applied biases and temperatures
[1]. The considered mechanisms for the investigated samples include
temperature dependent Fowler–Nordheim (FN) tunneling and Poole–
Frenkel (PF) emission as well as ohmic conduction [2]. The presented
approach can easily be extended to account for additional mechanisms
such as trap assisted tunneling (TAT) if relevant for different samples. In
contrast to typical extraction procedures [3] which determine current
conduction mechanism parameters sequentially, in this work, the
adjustable fit parameters are extracted in a single operation using the
Levenberg–Marquardt algorithm to obtain a least-square fit of the model
to measured I–V characteristics. Thus, simultaneously occurring current
mechanisms can properly be evaluated which allows to determine the
fraction of each conduction mechanism quantitatively for each voltage.
Submitting author: Zahir mohamed ouennoughi, Laboratoire
Optoélectronique et composants, Université Ferhat Abbas Sétif 1, 19000,
Alegria.
Email: [email protected] and [email protected]
References
[1] N. Rouag, Z. Ouennoughi , M. Rommel , K. Murakami , L. Frey ,
Microelectronics Reliability, (2015)
[2] Sze SM. Physics of semiconductor devices. Wiley-Interscience;
(1981).
[3] Cheong KY, Bahng W, Kim NK. Phys Lett. A 372, 529–32
(2008).
SIMFP 2016 4 Abstracts
72
Effect of A-site deficiency on magnetic and
magnetocaloric behavior of La0.7Sr0.3MnO3
manganite synthesized by sol-gel method
W. Cheikhrouhou-Koubaa1,2
; J. Makni-Chakroun1, M. Koubaa
1, A.
Cheikhrouhou1
1LPM, Sfax University, Tunisia and
2CETIC, Sakiet-ezzit, Tunisia
We report the effect of A-site deficiency (1%) on the structural and
magnetic properties of nanocrystalline La0.7Sr0.3MnO3 manganite
elaborated using the sol-gel method. The X-Ray Diffraction patterns
refined using Rietveld method confirms that the compounds are obtained
as single phases, which crystallize in the rhombohedral symmetry (R-3c
space group). The morphology of the samples, observed using a scanning
electron microscope (SEM), reveals a spherical shape with an average
grain size around 100nm compared to micrometric grains for the ceramic
route. Magnetization measurements versus temperature under low
magnetic applied field (0.05T) show a paramagnetic- ferromagnetic
transition with a Curie temperature TC decreasing and approaching room
temperature for lacunar compounds. From the magnetization
measurements versus magnetic applied field at several tepeartures, we
have deduced the magnetic entropy change, which presents high enough
values for domestic use in the magnetic refrigeration systems around
room temperature. Electrical resistivity reveals metal-insulator transition
for all compounds with T decreasing from 280K (stoichiometric sample)
to 250K (La) and 200K (Sr).
Submitting author: Wissem CheikhRouhou-Koubaa, LPM, Faculty of
Sciences of Sfax, Sfax University, B. P. 1171, 3000 Sfax and Research
Centre for TIC, BP 275, Sfax Technopark, 3021 Sakiet-Ezzit, Tunisia,
E-mail: [email protected]
4 Abstracts SIMFP 2016
73
Influence of the synthesis and sintering methods
on the composition, structure, microstructure
and physical properties of materials: the case of
manganites
Abdelwaheb Cheikhrouhou1, Firas Ayadi
1,2, Lorette Sicard
2, Wissem
Cheikhrouhou-Koubaa3, Souad Ammar
2
1Sfax University, Tunisia,
2Université Paris Diderot, France and
3 CETIC, Sakiet Ezzit, Tunisia
Several synthesis methods allow obtaining the same compounds.
However, the structure, the microstructure and the physical properties of
the material are influenced. Similarly, the sintering conditions used to
obtain dense pellets are of major importance. The manganite family, of
general formula Ln1−xXxMnO3 with perovskite structure, is particularly
interesting for their electronic and magnetic properties, which are strongly
dependent on their stoichiometry, structure and microstructure. We
focused on the LaCaBaMnO3, LaCaSrMnO3 compounds synthesized by
different methods: the ceramic procedure, the sol-gel method and the
polyol process. The intermediates obtained by soft chemistry (sol-gel or
polyol) were treated and sintered either by classical sintering in a furnace
or by Spark Plasma Sintering (SPS). A systematic study of the properties
of the different samples has been carried out. X-Ray Diffraction (XRD)
and electronic microscopy prove that SPS allows obtaining pure and
dense nanostructured manganites. The structure of the different solids has
been deepened by Rietveldt refinement. The results show that the cell
volume is strongly dependent on the sintering and synthesis conditions. In
some cases, even a structural change is observed. This was explained by
the valence state of Mn ions, determined by chemical analysis and
confirmed by X-ray Absorption spectroscopy (XANES). Indeed, the
samples obtained by SPS, under reducing conditions, display a
Mn4+/Mn3+ ratio lower than that prepared by the conventional ceramic
method. This affects strongly the magnetic properties of the samples: the
magnetization at saturation, the Curie temperature and even the order of
the magnetic transition can be changed. As a consequence, the magnetic
properties of the materials can be improved.
Submitting author: Abdelwaheb CheikhRouhou, LPM, Faculty of
Sciences of Sfax, Sfax University, B. P. 1171, 3000 Sfax, Tunisia.
E-mail: [email protected]
SIMFP 2016 4 Abstracts
74
Studies on Synthesis and Characterization of
Cupric Oxide based doped and undoped
transparent conducting oxides
M. Shanawaz Begum
Kakatiya University, India
The present paper focuses on Synthesis of cupric oxide based transparent
conducting oxides and to explore optical properties like optical
absorption, transmittance of the prepared samples. Oxides with high
transmission in visible range and high conductivity are known as
transparent conductive oxides (TCOs), and indium oxide doped with tin
(ITO) and zinc oxide doped with aluminum (AZO) are typical examples.
Transparent conducting oxides (TCOs) have been used in several
applications for three or four decades but, despite the huge volume of
experience in the field, there remain many unanswered questions at both
applied and fundamental levels. The reason that these issues have not
been addressed, or only superficially so, is largely because the
performance of the TCOs has been adequate to meet the demands of most
applications considered thus far. A TCO is a wide band-gap
semiconductor that has a relatively high concentration of free electrons in
its conduction band. These arise either from defects in the material or
from extrinsic dopants, the impurity levels of which lie near the
conduction band edge. The high-electron-carrier concentration (the
materials will be assumed to be n-type unless otherwise specified) causes
absorption of electromagnetic radiation in both the visible and infrared
portions of the spectrum. For the present purposes, it is the former that is
the more important. Because a TCO must necessarily represent a
compromise between electrical conductivity and optical transmittance, a
careful balance between the properties is required. Reduction of the
resistivity involves either an increase in the carrier concentration or in the
mobility. Increasing the former also leads to an increase in the visible
absorption. Increasing the mobility, however, has no deleterious effect and
is probably the best direction to follow. To achieve high-carrier mobility
will necessarily improve the optical properties.
As we shall re-emphasize later, we see this as a key direction for future
research and development of TCOs.
The preparation of p-type TCOs is crucial for the development of
transparent electronic devices and many other fields. It is also important
to get both p-type and n-type conductivity in the same material with
different dopants for electronic devices. The present study takes this as
subject and explores the possibility of producing new antimonates with
4 Abstracts SIMFP 2016
75
enhanced optical and electrical properties. This has a great impact on the
development of transparent electronic devices.
Submitting author: Shanawaz Begum M, Kakatiya University, Pingle Government Degree College for Women, Department of Physics,
Warangal, Telangana, India.
E-mail: [email protected]
SIMFP 2016 4 Abstracts
76
Spectroscopic Study of Erbium Doped
Aluminosilicate Glasses
A. Assadi1, A. Herrmann
2, C. Rüssel
2, K. Damak
1 and R. Maâlej
1
1Sfax University, Tunisia and
2Jena University, Germany.
Ln3+
(Sm3+
, Eu3+
and Yb3+
ions) doped Aluminosilicate (AS) glasses are a
new and relatively easy to produce laser material with exciting properties
as exceptionally high absorption and emission cross sections, smooth
amplification profiles and very low coefficients of thermal expansion,
making these glasses an ideal choice for the amplification of broad-band,
ultra-short and high-energy laser pulses. However, during the systematical
evaluation of the different AS glass compositions, samples which
contained network modifying ions of relatively large ionic radii such as
e.g. K+, Sr
2+ or Ba
2+ showed extraordinary optical properties in
comparison to all other AS glass compositions [1].
This work reports on the Judd–Ofelt analysis of 2×1020
ions/cm3 Er
3+-
doped aluminosilicate glasses. Mainly BaO, MgO and CaO have been
used as network modifier oxides. The five studied compositions were
prepared by using the conventional melt-quenching method. From the
UV-vis-NIR absorption spectra, the Judd-Ofelt parameters, Ω k (k = 2, 4,
6) of Er3+
were evaluated and discussed in detail. From the systematic
variations of the Ω2 parameter, structural changes in the glasses are
deduced: higher barium concentrations result in an increasing symmetry
at the Er3+
-sites. This finding also correlates with higher calculated
fluorescence lifetime values. Ω6 is related to the optical basicity of the
glass composition, while Ω4 seems to represent a mixture of Ω2 and Ω6.
This finding is strengthened by comparison with data of previous
publications.
Submitting author: Kamel Damak, Sfax University, Tunisia,
E-mail: [email protected].
References
[1] M. Tiegel, A. Herrmann, S. Kuhn, C. Rüssel, J. Körner, D. Klöpfel, R.
Seifert, J. Hein, M. C. Kaluza, Laser Phys. Lett. 11, 115811 (2014).
4 Abstracts SIMFP 2016
77
Changes in structural and optical properties of
nitrogen implanted indium oxide thin films
Azher Majid Siddiqui1*
, Riti Sethi1, Pravin Kumar
2, and Anver Aziz
1
1Department of Physics, Jamia Millia Islamia, India
2Inter University Accelerator Centre, India
The synthesis of indium oxide (In2O3) thin films involved two steps, the
first step being the deposition of pure indium (99.999%) on quartz
substrates using thermal evaporator. The second step involved the
annealing of deposited indium films at 500oC for 6hrs in oxygen
environment to obtain indium oxide thin films. The thickness of the films
was controlled at 80nm using a quartz crystal thickness monitor. The films
were implanted with 25keV N+ beam for different ion doses between
3×1015
to 1×1016
ions/cm2. The changes in structural and optical
properties were investigated using XRD, SEM-EDAX and UV-Vis
Spectrometry. XRD studies reveal decrease in crystallite size from 14.04
to 11.3 nm with increase in ion dose. However, at the highest ion dose of
1E16 ions/cm2, the crystallite size is found to increase to 19.3nm. SEM
micrographs show an increase in the grain size from 0.8 to 1.35µm with
increase in ion dose because of the agglomeration of the grains. Also,
from EDAX data on pristine and N-implanted thin films the presence of
indium and oxygen without any traces of impurity elements could be
seen. However, at lower ion doses such as 3E15 and 5E15 ions/cm2, no
evidence of the presence of nitrogen ion was seen. However, the ion dose
of 1E16 ions/cm2, evidence of presence of nitrogen can be seen in the
EDAX data. Band gap calculations reveal a decrease in band gap from
3.51 to 3.30eV with increasing ion dose. However, the band gap was
found to again show an increase at the highest ion dose.
Submitting author: A. M. Siddiqui, Department of Physics, Faculty of
Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India.
E-Mail: [email protected]
SIMFP 2016 4 Abstracts
78
Characterization and electrical property of
Cu2Zn(Sn1-xSix)S4 system, materials for
photovoltaic applications
Faouzi Hlel1, Mohamed Hamdi
2, Alain and Lafond
3
1,2 Sfax University, Tunisia and
3Nantes University, Tunisia
Low cost, high efficiency and less environmental pollution have been
regarded as the indispensable properties for next generation materials of
solar cells [1]. The photovoltaic solar cells, which directly convert
sunlight into electricity, use semiconductor for light absorption [2].
Meeting the requirements of the solar cells, Cu2ZnSnS4 (CZTS) is one of
promising alternative materials which can be utilized as absorber layers of
thin film solar cells [3]. For this purpose, we focused our work on
preparation of CZTS derivatives with partial substitution of tin by silicon
with general formula: Cu2ZnSn1-xSixS4, noted CZTSiS. The electrical
properties of CZTSiS compounds have been prepared via a ceramic route,
were investigated by conductivity measurements in a temperature range of
80–300 K. Structural characterizations of the materials were performed by
powder X-ray diffraction. It was found that at high temperatures, in the
studied range, the electrical conductivity was dominated by band
conduction and nearest-neighbor hopping (NNH). However, Mott law
with the variable range hopping (VRH) mechanism is predominant in the
low temperature region. Characteristic parameters describing
conductivity, such as the characteristic temperature (T0), hopping
distance, average hopping energy, localization length and density of states
were determined, and their values were discussed. These results are
critical for understanding the behavior of solar cells based on
polycrystalline CZTSiS absorber layers.
Submitting author: Faouzi HLEL, Sfax University, Faculty of Science,
Department of Physics, 3.5 Sokra Road 3000 Sfax, TUNISIA,
E-mail: [email protected]
References
[1] David B Mitzi, Oki G, Teodor K Todorov, Kejia Wang, Supratik Guha,
Solar Energy Materials and Solar Cells, 95, 1421–1436 (2011).
[2] Arnulf Jager Waldau, Solar Energy Materials and Solar Cells, 95,
1509–1517 (2011).
[3] Hironori Katagiri, Kazuo. Jimbo, Win Shwe Maw, Koichiro Oishi,
Makoto Yamazaki, Hideaki Araki, Akiko Takeuchi, Thin Solid Films, 517,
2455–2460 (2009).
4 Abstracts SIMFP 2016
79
Offset polarization in Ferroelectric thin films for
the application of RAM devices
Khalid Mujasam Batoo
King Saud University, Saudi Arabia
The current surge of interest in multiferroic materials showing the
magneto-electric coupling due to the presence of both magnetic and
ferroelectric ordering is fuelled by both the potential technological
applications and the underlying new physics [1-3]. The magneto-electric
coupling (ME) provides an additional degree of freedom in the designing
of actuators, sensors, and data storage devices [3].
Figure: Polarization verses electric field at 200 °C.
We report the multiferroic properties of polycrystalline homogeneous Bi4-
xNdxTi3O12 (BNdT) ferroelectric thin films sandwiched in Pt electrodes by
chemical solution deposition. Dense and uniform BNdT films were
achieved by rapid thermal annealing the spin-on films at 700 °C for 3 min
in an oxygen environment. All the samples exhibited well-saturated
hysteresis loops with remnant polarization (2Pr) increasing from 36.22
μC/cm (x = 0.0) to 109.86 μC/cm2 (x = 0.1), respectively, while the
coercive field (2EC) = 64.6 kV/cm remained unchanged for all
compositions at room temperature after exposing the films using Swift
heavy ion irradiation. Polarization offset was observed in the
compositionally graded ferroelectric thin films as a function of
-6000 -4000 -2000 0 2000 4000 6000
-120
-100
-80
-60
-40
-20
0
20
40
60
80
100
120
140
160
180
200
200 0C
Pol
ariz
atio
n (
C/c
m2 )
Electric field (kV/cm)
0.00
0.05
0.10
0.15
SIMFP 2016 4 Abstracts
80
temperature. Polarization offset was notable after 100 °C and increased
with increasing temperature, which may be related to thermionic charge
injection, which is asymmetric to top and bottom electrodes
Submitting author: K.M., Batoo, King Saud University, King Abdullah
Institute For Nanotechnology, Riyadh, Saudia Arabia. E-mail:
References
[1] K.F. Wang, J.-M Liu, Z.F. Ren, Adv. Phys. 58, 321-448 (2009).
[2] W. Esrnstein, N.D. Mathur, J.F. Scott, Nature 442, 759-765
(2006).
[3] R. Ramesh, N.A. Spaldin, Nature Materials, 6, 21-29 (2006).
4 Abstracts SIMFP 2016
81
Investigation of structural, magnetic and
magnetocapacitance properties of Pb free
multiferroic (BiFeO3)1−x(BaTiO3)x solid solution
Mohammad Shariq1,2
and Davinder Kaur 2
1Jazan University, Saudi Arabia and
2 IIT, Roorkee, India
Multiferroic materials, in which some kind of magnetic order and
ferroelectricity occur in the same phase, can offer a magnetoelectric
effect, showing the potential of controlling charge via an applied magnetic
field, or conversely, controlling spin via an applied voltage [1]. The
coexistence of these ferroic ordering provides an additional degree of
freedom especially useful for memory and logic device applications.
Multiferroic materials are more appropriate for the construction of
multifunctional devices, such as electric field controlled magnetic data
storage devices, sensors, transducers and spintronics devices [1, 2].
A series of multiferroic (BiFeO3)1−x(BaTiO3)x [x= 0, 0.1, 0.2, 0.3, 0.4 and
0.5] ceramics were synthesized by solid-state reaction method. XRD
patterns of (BiFeO3)1−x(BaTiO3)x [BF-BT] has been analyzed and single
phase of rhombohedral was found up to 70 mol% of BiFeO3.
Morphotropic phase boundary was found just above the x=0.3, and finally
it transforms into a cubic structure confirming the earlier reports [3]. This
result agreed with the phase diagram of BF-BT proposed by Kumar at el.
[4]. The BF-BT ceramics exhibited symmetric magnetic hysteresis loops,
indicating that they are magnetically ordered materials. The remnant
magnetizations of (BiFeO3)1−x(BaTiO3)x for x=0.1 and 0.2 are about
0.17, 0.33 emu/gm, respectively, indicating weak ferromagnetism in the
samples. The estimated values of Ms are 0.77 and 0.56 emu/gm, much
higher than that of other BiFeO3-based single-phase materials reported
previously [5]. As the content of BaTiO3 increased (x=0.3, 0.4), BF-BT
system changes into the paramagnetic state with a lower spontaneous
moment. Magneto-capacitance (MC) also decreased with magnetic field
and showed negative magneto-capacitance, similar like most
ferromagnetic and antiferromagnetic materials. Variation of MC at x=0.1
and 0.2 is much appreciable because of strong coupling due to
ferromagnetic nature of BF-BT system up to x=0.2.
Submitting author:M., Shariq, Jazan University, Faculty of Preparatory
Year, Department of Physics, Gizan, Saudi Arabia.
E-mail:[email protected].
SIMFP 2016 4 Abstracts
82
References
[1] N.A. Hill, J. Phys. Chem. B 104, 6694 (2000).
[2] W. Erenstein, et al., 442, 759 (2006)
[3] I. H. Ismailzade, et al. Phys. Stat. Sol. 68 K81 (1981).
[4] M. M. Kumar, et al., J. Appl. Phys. 87, 855 (2000).
[5] J. S. Kim, et al, J. Appl. Phys. 93, 9263 (2003).
4 Abstracts SIMFP 2016
83
Theoretical modification of Hume Rothery
condition of phase stability in a good agreement
with experimental data
Tarek El-Ashram1,2
1Port Said University. Eygpt and
2Jazan University, Saudi Arabia
We presented in this paper a theoretical modification of Hume Rothery
condition of phase stability in good agreement with experimental data.
This modification is derived directly from the quantum conditions on the
free electron Fermi gas inside the crystal. The new condition relates both
the volume of Fermi sphere VF and volume of Brillouin zone VB by the
valence electron concentration VEC as; for tetragonal and
hexagonal systems and as; for cubic systems [1-5].
Submitting author: T. El-Ashram, Port Said University, Faculty of
Science, Physics Department, Port Said, EGYPT; Jazan University,
Physics Department, Preparatory Year Deanship, P. O. Box 114, Gizan
45142, Saudi Arabia,
E-mail: [email protected]
References
[1] W. Hume-Rothery, J. Inst. Met. 35, 295-307 (1926).
[2] W. Setyawan and S. Curtarolo, Computational Materials Science 49,
299-312 (2010).
[3] Selected Powder Diffraction Data for Education & Training, Search
Manual and Data Cards, JCPDS, International Center For Diffraction
Data, Editor-in-Chief, William Frank McClune, 1601 Park Lan,
Swarthmore, PA 19081-2389, JCPDS, 1988 printed in U.S.A.
[4] T. El-Ashram, J. of Mater. Sci: Mater in Electronics, 16, 501-505
(2005).
[5] C. Kittel, Introduction of solid state physics, (John Wiley & Sons
Inc., 1996).
SIMFP 2016 4 Abstracts
84
Raman (light) scattering study on the high
temperature superconductor YBa2Cu3O6+x
Mohammed Bakr1,2
1Jazan University, Saudi Arabia and
2Max-Planck-Institut for Solid State
Research, Germany
Superconductivity “disappearance of resistivity below a specific transition
temperature Tc” was discovered in metals in 1911 by Heike Onnes [Nobel
Prize in Physics, 1913]. In the late 1950s, Bardeen, Cooper, and
Schrieffer proposed the BCS theory which successfully explains the
Cooper pairing of electrons in such superconductors. About three decades
after, superconductivity was discovered in copper oxide materials with
superconducting transition temperatures far above that of conventional
superconductors; the Tc is almost an order of magnitude of any previously
discovered conventional superconductor [1]. According to the BCS
theory, the Tc of conventional superconductors could never exceed 30 K,
whereas the highest Tc of cuprate superconductors (henceforth, high
temperature superconductors, abbreviated as HTSC‟s) reaches 165 K
found in a „mercury‟ copper oxide under pressure. This makes the HTSCs
exciting systems for researchers.
Since the discovery of high temperature superconductivity in cuprates,
numerous experiments have been performed, and many attempts have
been made to explain their superconducting pairing mechanism. Several
obstacles have arisen because of the complex phase diagram of these
materials. Cuprates are layered materials with the copper-oxygen CuO2
planes are the main building blocks. The hole doping per copper site in
the CuO2 planes determines the status of the material. The material
changes from Mott insolator at zero doping (the „parent‟ compound) to a
metal at and beyond optimal doping. In between at high temperatures, the
material goes into the pseudogap regime about which much is still
unclear, whereas at low temperatures the material becomes a
superconductor. One of the key challenges that alter the understanding of
the phase diagram of cuprates and the HTC superconductivity is the origin
of the pseudogap state and its relation with superconductivity.
In my talk, I will present a detailed temperature and polarization
dependent Raman scattering study on variously doped, twin-free
singlerystals of the high temperature superconductor YBa2Cu3O6+x. My
presentation will shed light on the HTC superconductivity and the
pseudogap states of the phase diagram of HTSC‟s.
Submitting author: M. Bakr, Jazan University, Faculty of Science,
Department of Physics, P. O. Box 114, Gizan 45142, Saudi Arabia, Max-
4 Abstracts SIMFP 2016
85
Planck-Institut for Solid State Research, Heisenbergstrasse 1, D-70569
Stuttgart, Germany.
E-mail: mbakr@ jazanu.edu.sa.
References
[1] B. Keimer, S.A. Kivelson, M.R. Norman, S. Uchida, J. Zaanen,
Nature, 518., 179-186 (2015).
SIMFP 2016 4 Abstracts
86
Electrochemical and Analytical Study on 3-
Carbohydrazide Derivatives as Corrosion
Inhibitors for Different Types of Low C-Steel in
Acidic Medium
Hala M. Hassan1, A. M. Eldesoky
2, A. Attia
3 and Awad Al-Rashdi
4
1Beni-Suef University, Egypt and Jazan University, Saudi Arabia,
2High
Institute of Engineering & Technology, Egypt and Umm Al-Qura
University , Saudi Arabia, 3Mansoura University, Egypt and Bisha
University, Saudi Arabia, 4Umm Al-Qura University, Saudi Arabia.
Three 3-carbohydrazide derivatives have been investigated for the
corrosion of different types of low C-steel in 2 M HCl solution at different
concentrations at 25±1◦C using potentiodynamic polarization,
electrochemical impedance spectroscopy (EIS) and electrochemical
frequency modulation (EFM) techniques. Generally, inhibition efficiency
of the investigated compounds was found to depend on the concentration
and the nature of the inhibitors. These studies have shown that 3-
carbohydrazide derivatives are very good ‘‘green”, mixed-type inhibitors.
Electrochemical frequency modulation (EFM) and electrochemical
impedance spectroscopy (EIS) method of analysis are also presented here
for monitoring corrosion. Corrosion rates obtained from both EFM and
EIS methods are comparable with those recorded using Tafel
extrapolation method, confirming validation of corrosion rates measured
by the latter. The inhibitive action of these 3-carbohydrazide derivatives
was discussed in terms of blocking the electrode surface by adsorption of
the molecules through the active centers contained in their structures.
Quantum chemical method was also employed to explore the relationship
between the inhibitor molecular properties and its protection efficiency.
The density function theory (DFT) is used to study the structural
properties of 3-carbohydrazide derivatives. The protection efficiencies of
these compounds showed a certain relationship to highest occupied
molecular orbital (HOMO) energy, Mulliken atomic charges and Fukui
indices. The corrosion resistance of alloyed low C-steel surface layer with
1% Cu type (B) was better than alloyed low C-steel surface layer with 0.5
% Cu type (A).
Submmiting Author: Hala M. Hassan, Jazan University, Saudi Arabia
Email: [email protected]
4 Abstracts SIMFP 2016
87
Structural and Optical properties of GaAsN/GaAs
epilayer grown by MBE 1
M. N. Garni, 1,2
F. Hassen, 2Z. Zaaboub and
2H. Maaref
1King Khalid University, Kingdom of Saudi Arabia and
2University of
Monastir, Tunisia
GaAsN, are promising semiconductors for technology application. Since their
first growth age they have attracted many attentions, both in fundamental and
in applied research. This attraction is due to their physics properties
(important bowing parameter) and promising for optoelectronic devices
working within the visible and near infrared. The introduction of a small
quantity of nitrogen in GaAs host matrix induces a considerable decrease in
the band gap energy of GaAsN. In this communication we will present the
XRD characterization of a GaAsN structure to deduce the nitrogen fraction.
The photoluminescence (PL) is used to study the optical properties. From the
PL results and using the anti-crossing model we have confirmed the nitrogen
fraction extracted from XRD. The band gap variation versus sample
temperature will be presented. A new PL peak, at low energy side is observed
and is attributed to deep level defect in the structure.
Submitting author: M. N. GARNI King Khalid University College of
Science, Physics Department, P.O 960 Al-Greigar, Abha, Saudi Arabia.
Email: [email protected]
SIMFP 2016 4 Abstracts
88
SIMFP 2016
The Fifth Saudi International Meeting on Frontiers of Physicswww.jazanu.edu.sa/SIMFP2016
4.7 Nuclear and Particle Physics
Energy-dependent microscopic optical potentialfor p+9Be elastic scattering
H. M. Maridi1, M. Y. H. Farag2, and E. H. Esmael21 Taiz University, Yemen and 2 Cairo University, Egypt.
The p+9Be elastic scattering at an energy range up to 200 MeV/nucleonis analyzed using the the single-folding model.The density- and isospin-dependent M3Y-Paris nucleon-nucleon (NN ) interaction is used for thereal part and the NN -scattering amplitude of the high-energy approxima-tion for the imaginary one. The surface contribution to the imaginary partis included. The analysis reveals that the basic scattering observables arereproduced well at energies up to 100 MeV/nucleon by use of the partial-wave expansion. For higher energies, the eikonal approximation give re-sults better than the partial-wave expansion calculations. The volume in-tegrals of the OP parts have systematic energy dependencies, and they areparameterized in empirical formulas. More explanations can be found inour work [1, 2].
Submitting author: M. H., Maridi, Taiz University, Faculty of AppliedScience, Department of Physics, Taiz, Yemen;E-mail: [email protected]
References[1] M. Y. H. Farag, E. H. Esmael, and H. M. Maridi, Phys. Rev. C 88,
064602 (2013).
[2] M. Y. H. Farag, E. H. Esmael, and H. M. Maridi, Phys. Rev. C 90,034615 (2014).
SIMFP 2016 4 Abstracts
90
Higher Order Cumulants in Colorless PartonicPlasma
S. CHERIF2,4, M.A.A. AHMED1,3,4,M. LADREM1,4
1Taibah University, KSA, 2University of Ghardaia, Algiers,3Taiz University, Yemen 4ENS-Vieux Kouba, Algeria.
Any physical system considered to study the QCD deconfinement phasetransition certainly has a finite volume, so the finite size effects are in-evitably present. This renders the location of the phase transition and thedetermination of its order as an extremely difficult task, even in the sim-plest known cases. In order to identify and locate the colorless QCD de-confinement transition point in finite volume T0(V ), a new approach usingthe finite-size cumulant expansion of the order parameter and the Lm,n-Method in colorless QCD-thermodynamics is developed[1, 2, 3]. It hasbeen put into evidence that all cumulants and their ratios showed deviationsfrom their asymptotic values, which increase with the cumulant order. Thisbehavior is essential to discriminate the phase transition by measuring thefluctuations. We have shown that both cumulants of higher order and theirratios, associated to the thermodynamical fluctuations of the order param-eter, in QCD deconfinement phase transition behave in a particular enoughway revealing pronounced oscillations in the transition region. The signstructure and the oscillatory behavior of these in the vicinity of the decon-finement phase transition point might be a sensitive probe and may allowone to elucidate their relation to the QCD phase transition point.[4, 5] Inview of this, higher order cumulants are often used in showing some im-portant physical properties as well as to look for the position of the finitevolume transition point. In the context of our model, we have shown thatthe finite volume transition point is always associated to the appearance ofa particular point in whole cumulants under consideration.
Submitting author: Prof.Dr. Madjid Lakhdar Hamou, Ladrem, TaibahUniversity, Faculty of Science, Department of Physics, P. O. Box 344, Al-Madinah Al-Munawwarah 41411, KINGDOM OF SAUDI ARABIA, Tel:+966-55-160-6516;E-mail: [email protected]
References
[1] M. Ladrem, A. Ait-El-Djoudi, Eur. Phys. J. C 44 257 (2005)(arXiv:0412407v1[hep-ph]).
4 Abstracts SIMFP 2016
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[2] S. Herbadji, Magister thesis in theoretical physics, Ecole NormaleSupérieure-Kouba, Algiers,Algeria (2007).
[3] M. Ladrem, Z. Zaki-Al-Full & S. Herbadji, AIP CP, 1343, 492,(2011);Ibid, 1370, 226,(2011) .
[4] M.A.A. Ahmed, Master thesis in theoretical physics, Taibah Univer-sity, Al-Madinah Al-Mounawwarah, KSA (2014).
[5] M. Ladrem, M.A.A. Ahmed, Z. Al-Full, S. Cherif, Eur. Phys. J. C 75,431, (2015) (arXiv:1509.00954 [hep-ph]).
SIMFP 2016 4 Abstracts
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Direct searches for light Higgs and dark Photon
at BABAR
Hossain Ahmed*
Jazan University, Saudi Arabia
We present results from the BaBar experiment on searches for low-mass
new physics. This includes a search for a light CP-odd Higgs boson (A0)
in
(1S)A0,
A0 cc decays, which provide limits on the product
branching fraction
((1S)A0) (A0 cc ) at the level of 7 x 10-5
–
2 x 10-3
for A0 masses between 4.0 GeV/c
2 and 9.25 GeV/c
2 and a search
for a dark photon (A'), a new light gauge boson introduced by dark sector
models obtaining 90% confidence level upper limits on the mixing
strength between the photon and dark photon at the level of 10-4 – 10
-3 for
dark photon masses in the range 0.02 - 10.2 GeV/c2.
Submitting author: H. Ahmed, Jazan University, Faculty of Science,
Department of Physics, P. O. Box 114, Gizan 45142, Saudi Arabia. [*This
talk is on behalf of BABAR]
E-mail: hnahmed@ jazanu.edu.sa
4 Abstracts SIMFP 2016
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Study the stability of N = 28 shell closure usingthe 58Ni( #»p , t)56Ni reaction.
M. Mahgoub1,2, R. Krücken2, A. Bergmaier 2,3, T. Faestermann 2,R. Gernhaeuser 2, L. Maie2, P. Maierbeck2, and Th. Kröll 2
1Jazan University, KSA, 2Technical University of Munich, Germanyand 3Bundeswehr University Munich, Germany.
Neutron transfer reactions are very effective tool to study the stability ofthe nuclear structure and the validity of the shell model. Neutron transferreactions enable the measurement of the excitation energy, orbital angularmomentum l and the total angular momentum J if a polarized beam is used.Further more two-neutron transfer reaction such as (p,t) is a direct probe ofpairing correlations in nuclei and so the shell stability. The mechanism ofthe two neutron transfer, whether they transfer simultaneously or sequen-tially or rather a mixer of both, is an indicator for the neutron pairing. Inthis work we used the 58Ni( #»p , t)56Ni reaction to study the neutron pairingand deduce the stability of the magic number N = 28 and the 1f7/2 shellclosure in Ni.The experimental results like the differential cross-section and analyzingpowers, will be presented and compared to the theoretical calculation us-ing the Distorted Wave Born Approximation DWBA utilizing the codeCHUCK3. The instability of the 1f7/2 shell and the magic number N =28 was confirmed, where the theoretical calculation was considerably im-proved after considering 1f7/2 as a broken shell.
Submitting author: Mahmoud Mahgoub, Jazan University, Departmentof Physics, P. O. Box 114, Gizan 45142, KSA;E-mail: [email protected]
References[1] M. Mahgoub, R. Krücken, Th. Faestermann, A. Bergmaier, D. Bu-
curescu, R. Hertenberger, Th. Kröll, H.-F. Wirth and A.F. Lisetskiy,European Phys. Jour. A 40, 35-43 (2009).
[2] J. H. Polane, W. F. Feix, P. J. van Hall, S. S. Klein, G. J. Nijgh, J.Poppema and S. D. Wassenaar, J. Phys. G: Nucl. Part. Phys 15, 1749-1768 (1989).
[3] T. Taylor and J. A. Cameron, Nuc. Phy. A 337, 365-540 (1980)
SIMFP 2016 4 Abstracts
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Kaon production in central Au+Au collisions at30 and 45 AGeV
Hamoud H. Alharbi1, Hamad A. Alhendi2, Masaud Almalki1
and Magdi Bajusair21KACST and 2King Saud University, KSA.
Ultra-relativistic heavy ion collisions are investigated in current and fu-ture experiments to study the phase transition from confinement to de-confinement state and the possibility to create quark gluon plasma (QGP).Strangeness enhancement is considered to be one of traditional signatureformation of (QGP). Kaons are the lightest strange particles which are pro-duced only at the time of collisions and thus are expected to carry impor-tant information of collision dynamics. The production of Kaon mesonsare investigated within the Ultra-Relativistic Quantum Molecular Dynam-ics Model (UrQMD). The time evolution of average density around thecollision center is calculated at different collision times at 30 A and 45A GeV. The time of maximum compression can then be determined. Thedistribution of rapidity and transverse mass are presented for Kaon mesons.
Submitting author: Magdi Bajusair, King Saud University, P. O. Box2455, Riyadh 11454, Saudi Arabia;E-mail: [email protected]
4 Abstracts SIMFP 2016
95
Extending the Class of Solutions of the 1D Dirac
Equation Using the Tridiagonal Matrix
Representation
Ibsal Assi1, Hocine Bahlouli
1,2 and Abdulaziz Alhaidari
2
1King Fahd University of Petroleum and Minerals and
2Saudi Center for
Theoretical Physics, Saudi Arabia
Dirac equation is a fundamental equation in nuclear and particle physics
which describes the dynamics of fermions, this equations was discovered
by Paul Dirac in 1928 [1]. Our work aims to find more solvable potentials
to Dirac equations analytically using the J-matrix approach [2]. The main
key in this work is that we expand the spinor wavefunction in an infinite
bounded series with respect to some complete basis which usually be
either Laguerre basis or Jacobi basis [3]. The second step is that we
calculate the matrix elements of the wave operator and requiring it to be
tridiagonal and symmetric. Adding this constraint will add more
flexibility on our Hamiltonian which will help us to extend the class of
solvable potentials to this problem as described in [4]. Currently, we are
producing more solutions to the problem and we hope to share some new
solutions with you in the due time. Also, we worked on getting solutions
that already have done by other authors which we succeeded to do in
order to show the strength of our approach. We believe that the new
solutions which are extracting will be either solutions to some physical
problem or approximation thereof. Dirac equation is also important in
graphene studies as presented in [5, 6].
Submitting author: I. A., Assi, King Fahd University of Petroleum and
Minerals, Faculty of Science, Department of Physics, Dhahran 31261,
Saudia Arabia.
E-mail: [email protected].
References
[1] Strange, Paul. Relativistic Quantum Mechanics: with applications
in condensed matter and atomic physics. Cambridge University
Press, 1998.
[2] Abdelmonem, M. S., et al., eds. The J-matrix Method:
Developments and Applications. Springer, 2008.
[3] Alhaidari, A. D. "An extended class of L 2-series solutions of the
wave equation." Annals of Physics 317,1, 152-174 (2005).
[4] Alhaidari, A. D., H. Bahlouli, and I. A. Assi. "Extending the class
SIMFP 2016 4 Abstracts
96
of solutions of the Dirac equation using tridiagonal matrix
representations." arXiv preprint arXiv:1506.04446 (2015).
[5] Miserev, D. S., and M. V. Entin. "Quantum mechanics of graphene
with a one-dimensional potential." Journal of Experimental and
Theoretical Physics 115, 4, 694-705 (2012).
[6] Kuru, Ş., J. Negro, and L. M. Nieto. "Exact analytic solutions for a
Dirac electron moving in graphene under magnetic fields." Journal
of Physics: Condensed Matter 21, 45, 455305 (2009).
4 Abstracts SIMFP 2016
97
Fragmentation of Partons in QCD at FiniteTemperature versus Jet Quenching
M. Ladrem1,3,5, M. Chekerker2,5, F.C. Khanna3,5 and A. E. Santana4,51Taibah University, KSA, 2El-Harrach Algiers,Algeria
3University of Victoria, Canada, 4Universidade de Brasilia, Brasil5ENS-Vieux Kouba, Algeria.
Two experimental effects have been observed and confirmed in Ultra- Rela-tivistic Heavy Ion Collisions (URHIC) at RHIC and LHC: the creation of anew state identified as the QCD partonic plasma and the jet quenching phe-nomena [1]. The partonic jets with large transverse momentum (pT ), cre-ated from initial hard parton-parton scatterings, have to travel through thehot QCD plasma. Their interaction with the many-body system force themto lose energy by collisions with other partons (elastic scattering) and/or byradiation (bremsstrahlung). This energy loss reduces the high momentumjets and their large pT hadrons, even up to the extinction. Each parton tryingto escape from the hot partonic plasma, will be subjected to the inevitablecolor confinement effect. Therefore the fragmentation phenomenon takeplace followed by the hadronization and the formation of collimated jetsof hadrons. The distribution of hadrons inside a jet is known as the jetfragmentation function. We know that the nature of a partonic jet frag-mentation in URHIC has the potential to shed some light to understandthe jet quenching phenomenon. From this and in order to understand thethermal effect of the hot QCD medium in the dynamical evolution of a par-ton jet, a calculation of the Collins-Soper fragmentation function [6, 7] atfinite temperature is carried out using the real-time finite-temperature quan-tum field formalism of thermofield dynamics (TFD). We find that the finitetemperature fragmentation function normalized to the zero temperature oneDH/Q,G(z, T )/DH/Q,G(z, 0), decreases in magnitude with an increase inthe temperature T . It looks like the temperature reduces the power of thepartons to break up into the hadrons. In this work we have tried to under-stand if the decrease in the fragmentation rate is related to the jet quenchingor not? [2, 3, 5]
Submitting author: Prof.Dr. Madjid Lakhdar Hamou, Ladrem, TaibahUniversity, Faculty of Science, Department of Physics, P. O. Box 344, Al-Madinah Al-Munawwarah 41411, KINGDOM OF SAUDI ARABIA, Tel:+966-55-160-6516;E-mail: [email protected]
SIMFP 2016 4 Abstracts
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References[1] Guang-You Qin, Nuclear Physics A 931,165-175,(2014).
[2] M. Ladrem, M. Chekerker, F.C. Khanna and A.E. Santana, Int. J. Mod.Phys. A 28,10, 1350032 (2013).
[3] M. M. Chekerker, M.Ladrem, F.C. Khanna and A.E.Santana, Int. J.Mod. Phys. A 26,17, 2881,(2011).
[4] M. Chekerker, M. Ladrem, F.C. Khanna and A.E.Santana, Int. J. Mod.Phys. A 26,17, 2881,(2011).
[5] M. Chekerker, PhD Thesis Mouloud Mammeri University, Tizi-Ouzou, Algeria (2012)
[6] John C. Collins, Davison E. Soper, Nuclear Physics B, 193,2,(1981)381-443; ibid 194,3,(1982) 445-492
[7] J. C. Collins, Foundations of Perturbative QCD, 2nd Edition, (Cam-bridge University Press, 2013).
4 Abstracts SIMFP 2016
99
Separable instant form model for pion-nucleoninteraction at 1.0 GeV
Hamoud H. Alharbi1, Hamad A. Alhendi2 and Emad Raslan1,2
1KACST and 2King Saud University
A separable model for pion-nucleon interaction is constructed based on aPoincaré invariant instant form. The model describes coupling betweensingle-baryon and the meson baryon channels. The elastic scattering am-plitudes are obtained by solving the Lippmann-Schwinger equations. Phaseshifts and inelasticities of partial waves are computed and fitted up to a pionlab kinetic energy of 1.0 GeV.
Submitting author: Emad Raslan, KACST, P. O. Box 6086, Riyadh, SaudiArabia;E-mail: [email protected]
SIMFP 2016 4 Abstracts
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SIMFP 2016
The Fifth Saudi International Meeting on Frontiers of Physicswww.jazanu.edu.sa/SIMFP2016
4.8 Nanoscience and Engineering
Synthesis and Characterization of Fluorescent-
Magnetic (ZnS: SrFe12O19) Nanostructure
Kausar Rajar1, 2
, Barıs Karakus1, Kenan Koc
3, Esra Alveroglu
1
1Istanbul Technical University, Turkey
2University of Sindh, Pakistan
3Yildiz Technical University, Turkey
In this study, we synthesis of strontium ferrite (SrFe12O19) nanoparticles
via co-precipitation including an oleic acid surface modification and silica
coating with a modified Stöber process. In second (3-mercaptopropyl)
trimethoxysilane (MPS) capped ZnS nanoparticles were synthesized by
using solution growth technique. Separately synthesized MPS capped ZnS
fluorescent nanoparticles and SiO2 coated SrFe12O19 magnetite
nanoparticles were characterized by using UV-Vis Absorption
Spectroscopy, Fluorescence Spectroscopy, X-ray analysis, Vibrating
Sample Magnetometer and Fourier Transform Infrared Spectroscopy
methods. The size of ZnS and SrFe12O19 nanoparticles were found 5nm
and 12nm, respectively. After synthesis and characterization of these two
nanostructures, they mixed and stirred at room temperature for 24h. It is
confirmed by FTIR results that the MPS capped ZnS nanoparticles were
attached to the surface of the SrFe12O19 nanoparticles via Si-O-Si bonds
created by the Si-O group of SrFe12O19 surface and the trimethoxysilane
group of MPS during the stirring process.
The final product were separated by an external magnet and washed with
several times. The fluorescent-magnetic ZnS: SrFe12O19 nanoparticles
showed that superparamagnetic behaviour.
Submitting author: K. Rajar, Istanbul Technical University, Faculty of
Science and Letters, Department of Physics Engineering, 34469 Maslak,
Istanbul, Turkey. E-mail: [email protected].
References
[1] M. Çakıcı and E. Alveroğlu, Int. J. Nanotechnol., 12, 3-4 (2015).
[2] E. Alveroğlu, H. Sözeri, A.Baykal, U. Kurtan, M.Şenel, Journal of
Molecular Structure, 1037, 361-366 (2013).
[3] Koc, K., F.Z. Tepehan, and G.G. Tepehan, Journal of
Nanomaterials, 571315- 571322, (2012).
[4] K. Koc, E. Alveroglu, Journal of Molecular Structure, 1089, 66-72
(2015).
SIMFP 2016 4 Abstracts
102
Ge as a channel material in p-type MOSFETs
S.Slimani, B. Djellouli
LMMC University of Saida, Algeria
Novel materials and innovative device structures has become necessary
for the future of CMOS, the optimized structure is simulated within
Nextnano [1] in order to highlight the quantum effects on DG MOSFETs
when Si is replaced by Ge and SiO2 is replaced by ZrO2 and HfO2as the
gate dielectric. The results have shown that Ge MOSFET has the highest
mobility and high permittivity oxides serve to maintain high drive current.
By comparing the Gm values while dopping channel varying from
0.1×1015
to 10×1015
The Tansconductance (Gm) ) is decreased by 5.4% for
SiO2 and 24.7% for ZrO2 And 27,9% for HfO2 . Gd is increased by 28.8%
for HfO2 and 10. 3% forZrO2 and 35.5 %f or SiO2.we can see the
variation Gm and Gd.
Submitting Author: limani Samia, LMMC University of Saida, Algeria
Email: [email protected]
-1 0 1 2 3 4 5 6 7 8 9 10 11
0,0
5,0x102
1,0x103
1,5x103
2,0x103
2,5x103
-1 0 1 2 3 4 5 6 7 8 9 10 11
0,0
2,0x102
4,0x102
6,0x102
8,0x102
1,0x103
1,2x103
1,4x103
gd(s
/m)
channel doping(cm-3)
Si,SiO2
Ge,HfO2
Ge,ZrO2
Gm(S
/m)
channel doping(cm-3)
Ge,HfO2
Ge,ZrO2
Si ,SiO2
Figure 1: Gm and Gd versus Channel doping
References
[1] S. Birner, T. Zibold, and al “Nextnano: General Purpose 3-D
Simulations,” IEEE Transactions on Electron Devices, 54, 9, 2137-2142
(2007).
4 Abstracts SIMFP 2016
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Hydrogenation mechanism of fullerene cages
Ahlam A. EL-Barbary
Jazan University, Saudi Arabia
Many experimental and theoretical attempts are made for enhancement
the hydrogen storage in carbon materials. Hydrogen has been recognized
as an ideal energy carrier and environment-friendly energy source because
its use creates neither air pollution nor greenhouse-gas emissions. Ab
initio DFT (density functional theory) is used to investigate the
hydrogenation energy and hydrogenation mechanism of Cn and CnHn
fullerene cages from n = 20-60. All calculations have been performed
using G03W package, with B3LYP exchange-functional and applying
basis set 6-31G(d, p). The calculations show that the required energy to
initiate the hydrogen migration on the surface of Cn fullerene cages
between two metastable structures of C54H is ~1.5 eV and on the surface
of CnHn fullerene cages between metastable and stable structures of the
C60H61 fullerene cage is ~2.35 eV. Also, it is found that the energy release
from hydrogen migration is always enough to direct the hydrogenation
process towards the most stable structures and it reduces the number of
hydrogen atoms bonded to the fullerene cage via forming H2 molecules.
Submitting author: A. A.,EL-Barbary, Jazan University, Faculty of
Science, Department of Physics, P. O. Box 114, Gizan 45142, Saudi
Arabia, E-mail: [email protected]
References
[1] A. A. El-Barbary, International Journal of Hydrogen Energy, in
press (http://dx.doi.org/10.1016/ j.ijhydene.2015.10.102 xxx
(2015)).
[2] A.A. Hindi and A. A. EL-Barbary, Journal of Molecular Structure,
1080, 169 (2015).
[3] A. A. El-Barbary, Journal of Molecular Structure, 1097, 76
(2015).
[4] A. A. El-Barbary, Kh. M. Eid, M. A. Kamel and M. M. Hassan,
Computational Materials Science, 69, 87 (2013).
[5] A. A. El-Barbary, H. I. Lebda and M. A. Kamel , Computational
Materials Science, 46, 128 (2009).
[6] I. Suarez-Martinez, A. A. El-Barbary , G. Savini and M. I. Heggie,
Phys. Rev. Lett., 98 , 015501 (2007).
[7] E. Bichoutskaia , A. M. Popov, A. A. El-Barbary, M. I. Heggie, Y.
SIMFP 2016 4 Abstracts
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E. Lozovik, Phys. Rev. B, 71, 113403 (2005).
[8] C. P. Ewels, R. H. Telling, A. A. El-Barbary, M. I. Heggie, Phys.
Rev. Lett., 91, 025505 (2003).
[9] A. A. El-Barbary, R. H. Telling, C. P. Ewels, and M. I. Heggie ,
Phys. Rev. B, 68, 144107 (2003).
[10] R. H. Telling, C. P. Ewels, A. A.El-Barbary, M. I.Heggie, Nature
Materials, 2, 333 (2003).
4 Abstracts SIMFP 2016
105
Demonstration of biased membrane static figuremapping by optical beam subpixel centroid shift
Fabrizio PintoLaboratory for Quantum Vacuum Applications,
Department of Physics, Faculty of Science, Jazan University
The measurement of Casimir forces by means of condenser microphoneshas been shown to be quite promising [1]. However, unlike the dynamicalcase [2], the accurate determination of the static figure [3] of the sensingmembrane under electrostatic bias remains a challenge [4]. In this paper,we show our first data obtained by measuring the centroid shift of an opticalbeam with subpixel accuracy by charge coupled device (CCD) and by anextensive analysis of noise sources present in the experimental setup.
Submitting author: Fabrizio Pinto, Jazan University, Faculty of Science,Department of Physics, P. O. Box 114, Gizan 45142, Kingdom of SaudiArabia; Email: [email protected]
References[1] S., Hunklinger, H., Geisselman, and W., Arnold, Rev. Sci. Instrum.,
43, 584–587 (1972).
[2] T. Lavergne, D., Stéphane, M., Bruneau, N., Joly, and D., Rodrigues,J. Acoust. Soc. Am., 128, 3459–3477 (2010).
[3] J. E., Warren, J. Acoust. Soc. Am., 52, 711–719 (1972).
[4] F., Pinto, J. Phys. A, 41, 164033(9) (2008).
SIMFP 2016 4 Abstracts
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Synthesis and characterization of cadmium
selenide quantum dots at different parameter
using chemical method
W. A. Farooq, S. F. Alqahtani
King Saud University, Saudi Arabia
In the present research we have fabricated Cadmium Selenide (CdSe)
quantum dots (QDs) at different reaction times, temperatures and different
stabilizers concentration using chemical method. Optical properties of
these QDs at different temperatures, reaction times and stabilizers
concentration are investigated using spectrometer and spectrofluorometer.
Preparation apparatus of QDs is shown in fig 1. Band gap energy is
calculated with Brus equation. Structural properties with changing these
parameters are studied with TEM and XRD. With increasing temperature
the absorption peaks shifted to longer wavelength, Photoluminescence
(PL) has red shift, sizes vary from 3.8nm to 4.9 nm and band gaps have
decreasing trend. With increasing stabilizers (TOPO) concentration
absorption peak shifted to longer wavelength, band gaps have decreasing
trend, Pl spectra has red shift.
Figure 1: Preparation of CdSe Quantum Dots
In the study of structural investigations, TEM reveals that sizes of the
QDs vary between 4.3 nm to 5.2 nm with increasing temperature and
stabilizers concentration. XRD patterns demonstrate zincblended phase
and changes in peaks have been observed with increasing above
4 Abstracts SIMFP 2016
107
mentioned parameters.
Submitting author: W. A. Farooq, King Saud University, Department of
Physics, College of Science P. O. Box 2455, Riyadh 11451, Saudi Arabia.
Email: [email protected]
References
[1] Z. A. Peng and X. Peng., J. Am. Chem. Soc, 123, 183-184 (2001).
[2] P. Y. U and M. Cardona. Fundamentals of Semiconductors. 6th
Ed. USA: Springer (2010).
SIMFP 2016 4 Abstracts
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Gate Tunable Nanostructure Graphene Based
Layer Switch
Hasan M. Abdullah
King Fahd University of Petroleum and Minerals, Saudi Arabia
By locally coupling two independent graphene layer leads to an AB-
stacked bilayer graphene (BLG) it is possible to make a device that can
act as a switch. The mechanism of this switch is based on the external
control of the current flow through the external independent layer leads
once the incident carriers are scattered through the coupled AB-region. An
external perpendicular electrostatic field can control the switching of the
current between the two layers. This device can be constructed from one
conducting BLG region coupled to two leads made of two single layer
graphene sheets. Experimentally, such structures have been realized
recently using chemical vapor deposition technique (CVD) [1], where due
to rippling the graphene layers were decoupled in some regions while
being connected in others. Similar structures also have been investigated
in the literature using a single graphene sheet connected to the BLG from
each lead [2]. Our numerical results were based on an abrupt interface
model where we showed that one can select the layer we want the current
to flow through in the leads with almost a 100 % probability. To sum up,
our numerical results suggest that such a model constitutes a promising
candidate for application as an electronic switch.
Submitting author: Hasan. Mohammed., Hasan Abdullah., King Fahd
University of Petroleum and Minerals, Faculty of Science, Department of
Physics, Dhahran, Saudi Arabia.
E-mail: [email protected].
References
[1] L. Ju, Z. Shi1, N. Nair, Y. Lv, C. Jin, J. Velasco Jr, C.
OjedaAristizabal, H. A. Bechtel, M. C. Martin, A. Zettl, J.
Analytis, and F. Wang, Nature 520, 650 (2015).
[2] J. W. Gonzz, H. Santos, M. Pacheco, L. Chico, and L. Brey, Phys.
Rev. B 81, 195406 (2010).
4 Abstracts SIMFP 2016
109
Biophysics computation using carbon nanotube
based transistor: Case of neuromorphic systems
Muntasir Ali Alnajjari
Jazan University, Saudi Arabia
Neuromorphic engineering is related to the existing analogies between the
physical semiconductor VLSI (Very Large Scale Integration) and
biophysics. Neuromorphic systems propose to reproduce the structure and
function of biological neural systems for transferring their calculation
capacity on silicon. Since the innovative research of Carver Mead [1], the
neuromorphic engineering continues to emerge remarkable
implementation of biological system [2][3].
In this work we present a simulation of an elementary neuron cell with a
technology based on carbon nanotube. These nanoscale transistors have
shown that they offer a better surface of integration silicon with low
power consumption. The model of the cell neuron which will be simulated
is called integrate and fire (I&F) model. It is widely used by
neuromorphic engineers. As a practical example of this model one can
cite the work of G. Indiveri et al. [4] who showed a complete circuit of a
neuron characterized by a refractory period, a frequency adaptation, a
feedback block that minimizes power consumption in the two MOS
inverters and a reset block. The circuit was simulated with the AMS 0.35
µm CMOS technology and presents low levels of power consumption
(267 pJ) and a silicon integration area equal to 913µm. This circuit has
been simulated with CNTFET technology using ADS environment to
verify the neuromorphic activities in terms of membrane potential. This
can demonstrate the efficiency of this emergent device in the design of
such architecture in terms of power consumption and technology
integration density. The model of carbon nanotube transistor that was
developed by Najari et al. [5] has been used to simulate the Indiveri’s
neuron circuit under the ADS environment. Figure 2 presents spiking
activity of the simulated neuron for different refractory capacity Crf.
Submitting author: Muntasir. Ali, Alnajjari, IKCE, P. O. Box 114, Gizan
45142, Saudia Arabia, Tel: +966-17-334-8653.
E-mail: [email protected].
SIMFP 2016 4 Abstracts
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Figure 1: Schematic diagram of the Differential-Pair Integrator (DPI)
neuron circuit [5].
Figure 2: Simulation results for the spiking carbon nanotube transistor
based neurons for different refractory capacity.
References
[1] C. Mead, “Neuromorphic electronic systems,” Proc. IEEE, 78, 10,
1629–1636 (1990).
[2] A. Y. Chow, “The Artificial Silicon Retina Microchip for the
Treatment of VisionLoss From Retinitis Pigmentosa,” Arch.
Ophthalmol., 122, 4, 460 (2004).
[3] V. Y.-S. Chan, C. T. Jin, and A. van Schaik, “Neuromorphic Audio–
Visual Sensor Fusion on a Sound-Localizing Robot,” Front.
Neurosci., vol. 6, Feb. 2012.
[4] P. Livi and G. Indiveri, “A current-mode conductance-based silicon
neuron for address-event neuromorphic systems,”, pp. 2898–2901
(2009).
[5] M. Najari, S. Frégonèse, C. Maneux, H. Mnif, N. Masmoudi, and T.
Zimmer, “Schottky Barrier Carbon Nanotube Transistor: Compact
Modeling, Scaling Study, and Circuit Design Applications,” IEEE
Trans. Electron Devices, 58, 1, 195–205, (2011).
4 Abstracts SIMFP 2016
111
Fabrication of Mn2+ ions doped PbS thin films
and their characterization
Abdelaziz Gassoumi1,2
, Najoua Kamoun-Turki
1
1 El Manar University, Tunis and
2 King Khalid University, Saudi Arabia
The aim of the current work is to deposit and study the effect of Mn2+
doping (0-5%) on lead sulfide (PbS) thin films using a simplest and cost
effective chemical bath deposition (CBD) technique on glass substrates at
ambient temperature and pressure. The effect of Mn2+
content on
structural, morphological and optical properties of PbS thin films was
studied. Powder X-ray diffraction and Atomic Force Microscopic results
showed that all the deposited thin films exhibits both nanostructured and
polycrystalline nature with cubic rock-salt structure. The remarkable
effect on optical transmittance and band gap was observed due to Mn2+
doping for all the films. The optical energy band gap values were found to
enhance with increasing the Mn2+
content in PbS thin films. Further, the
refractive index was calculated and a relationship with energy band gap
was investigated and also the high frequency dielectric constant (ε∞) was
determined using the energy band gap values as a function of the Mn2+
content.
Submitting author: Abdelaziz Gassoumi, Laboratoire de Physique de la
Matière Condensée, Faculté des Sciences de Tunis, Tunis -El Manar
University, 2092 Tunisia, Tunisia & Department of Physics, King Khalid
University, Saudi Arabia.
E-mail: [email protected]
SIMFP 2016 4 Abstracts
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SIMFP 2016
The Fifth Saudi International Meeting on Frontiers of Physicswww.jazanu.edu.sa/SIMFP2016
4.9 Interdisciplinary Physics
Electromagnetic Modeling of Tridimensional
Microwave Plasma Reactor
K. Bouherine1, A. Tibouche
1, N.Ikhlef
1 and O.Leroy
2
1Jijel University, Algeria and
2 Université Paris-Sud, France.
This work presents calculation of electromagnetic field for a microwave
(2.45 GHz) plasma reactor [1]. The study is based on a tridimensional
harmonic electromagnetic (EM) description of the microwave reactor. We
present the distribution of the EM fields in two cases, first without
plasma, then with plasma that effects only very locally the electric field
distribution for a given spatial profile of the plasma density.
(a) (b)
Figure 1: Electric field of the microwave reactor :(a) without plasma, (b) with plasma
Submitting author: Bouherine Keltoum, LAMEL, University of Jijel
BP.98, Jijel 18000, Algeria; E-mail: [email protected].
References
[1] N. Ikhlef, M.R. Mekideche and O. Leroy, 3D electromagnetic
simulation of a large diameter cylindrical surface wave excited
plasma reactor, in COMPEL, 27, 1069-1080 (2008).
SIMFP 2016 4 Abstracts
114
Quantum aspects of charged-particle beam
optics
Sameen Ahmed Khan
Dhofar University, Salalah, Sultanate of Oman
Charged-particle optics, or the theory of transport of charged-particle
beams through electromagnetic systems, is traditionally dealt with using
classical mechanics. Though the classical treatment has been very
successful, in designing and working of numerous charged-particle optical
devices, it is natural to look for a prescription based on the quantum
theory, since any system is quantum mechanical at the fundamental level.
The quantum theory leads to interesting additional contributions to the
classical paraxial and aberrating behaviour. In the classical limit the
quantum formalism reproduces the well-known Lie algebraic formalism.
Submitting author: S.A. Khan, Dhofar University, Department of
Mathematics and Sciences, College of Arts and Applied Sciences, P.O.
Box 2509, Salalah, Sultanate of Oman.
Email: [email protected].
References
[1] R. Jagannathan, R. Simon, E.C.G Sudarshan and N. Mukunda,
Physics Letters, A134, 457-464 (1989).
[2] R. Jagannathan, Physical Review, A42, 6674-6689 (1990).
[3] R. Jagannathan and S.A. Khan, Advances in Imaging and Electron
Physics, 97, 257-358 (1996).
[4] S.A. Khan and R. Jagannathan, Physical Review, E51, 2510-2515
(1995).
[5] Sameen Ahmed Khan, Advances in Imaging and Electron Physics,
152, 49-78 (2008).
4 Abstracts SIMFP 2016
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Nanomagnetism in Medicine
Saqlain A. Shah
Forman Christian College (University) Lahore, Pakistan
Magnetic nanosystems have attracted an enormous attention of
researchers due to their potential applications in imaging, diagnostics &
therapy. Cancer is one of the most lethal diseases that kill millions of
humans every year. Treatment of cancer via chemotherapy has always
been challenging due to the toxic effects of drugs on healthy tissues.
Anticancer drugs usually kill the rapidly dividing cells and also kill
healthy cells as a collateral damage. Methods are being developed to
target the cancer cells selectively thus avoiding the healthy cells.
Magnetic nanoparticles are being considered future materials for
controlled drug delivery, hyperthermia therapy, magnetic resonance
imaging (MRI) and magnetic particle imaging (MPI) etc. When magnetic
nanoparticles are subjected to oscillating magnetic fields, it generates heat
due to hysteresis and Neel losses. But the hydrophobic and toxic nature of
magnetic particles limits their prolonged blood circulation. Toxicity of
magnetic nanoparticles can be reduced by surface coatings with
biocompatible compounds like polymers, proteins and albumins etc.
Surface coated magnetic nanoparticles have been quite promising in
biomedical imaging, e.g., MRI and MPI etc. But using magnetic
nanoparticles as drug carriers for controlled drug delivery is still a
challenge. Superparamagnetic iron-oxide nanoparticles are potential
candidates for biomedical imaging and therapeutic applications.
Understanding the fundamentals of magnetism is essential for tailoring
the required characteristics in nanoparticles. Current study is about Neel
and Brownian magnetic reversal dynamics probed by freezing
nanoparticles in static magnetic fields. Liquid nanoparticles showed
slightly higher susceptibility at coercive field than the frozen particles,
suggesting the Brownian contributions supplementing the Neel
relaxations. Nanoparticles were frozen along parallel, diagonal and
transverse orientations with respect to the measurement field. Particles
frozen in parallel direction showed the highest susceptibility and
coercivity than those frozen in transverse direction, suggesting uniaxial
anisotropic behavior in spinel cubic crystalline structure. Higher freezing-
field caused higher susceptibility and coercivity. These parameters
decreased by the increasing slew-rate of the measurement field.
Submitting author: S. A. Shah, Department of Physics, Forman
Christian College (University) Lahore, Pakistan.
E-mail: [email protected]
SIMFP 2016 4 Abstracts
116
Airy Function Approach and Numerov Method
to Study the Anharmonic Oscillator Potential
N.Al-Sedran1,2
and F. Maiz2,3
1King Khalid University, Saudi Arabia
2Najran University, Saudi Arabia
and 3
Centre of Energy, Tunisia
The numerical solutions of the time independent Schrödinger equation
for some one-dimensional potentials forms are usually completed by the
asymptotic iteration method [1]. However, in practice, the main difficulty
in using this method lies in the complexity in choosing the adjustment
parameter, which allows improvement of the method’s rate of
convergence. In this talk the Airy function approach and the Numerov
and the asymptotic iteration methods will been presented to study the
oscillator anharmonique potential , (A>0, B< 0), with
(α = 2) for quadratic, (α =3) for sextic and (α =4) for octic anharmonic
oscillators. The Airy function approach [2] is based on the replacement of
the real potential V(x) by a piecewise-linear potential V(x), while, the
Numerov method [3] is founded on the discretization of the function of
wave on the x-axis, by against the method of asymptotic iteration is based
on the successive derivations of a certain function. The first energies
levels will be shown and the wave functions for the sextic system
sketched. It's found that the obtained results using these three methods
are in good agreement.
Submitting author: F. Maiz, King Khalid University, Faculty of
Sciences, Physics Department, Abha, Saudi Araabia,
E-mail: [email protected].
References
[1] T. Barakat, Physics Letters A 344, 411–417 (2005).
[2] F. Maiz, S. AlFaify, Physica B 441, 17–20 (2014).
[3] J. Aguiar, H. Ramos, Journal of Mathematical Chemistry, 37, 3
(2005).
4 Abstracts SIMFP 2016
117
Synthesis, characterization and toxicological
response of Nickel oxide Nanoparticles in Liver
cells
M. Atif 1 and Muhammad Fakhar-e-Alam
2, Muhammad Hammad Aziz
3,
Najeeb Abbas4
1King Saud University, Saudi Arabia and 2University of Electronics
Science and Technology, China. 2, 3
Majmaah University, Saudi Arabia, 4GC University, Faisalabad,
Pakistan
Nanomaterials [1-5] are emerging milestones in Photodynamic Therapy
(PDT) and ongoing research with tremendous clinical applications,
diagnostic as well as antitumor, microbial nonmicrobia treatment purposes
and are front runners due to their high quantum yield, size dependent
tunable emission of wavelength over wide spectrum of light. Nano-
dependent PDT technique involving nanoparticles (NPs) is simple,
biologically safe, biocompatible in absence of UV light, enhances
endogenous fluorescence, noninvasive, fast with their least permeability
in normal cells. But nickel oxide nanoparticles (NiO NPs) with high
surface to volume ratio show maximum toxicity can be used as an
efficient photosensitizer carrier system and at the same time providing
intrinsic white light needed to achieve cancer cell necrosis.The main focus
of my research is to improve the effectiveness of PDT by using malignant
cell line as biological model. In present experiment, NiO NPs were
synthesized by using precipitation technique. After successful growth of
mentioned NPs, characterization step had been performed. In the last step,
toxicity of NiO will be tested in hepatocellular model (HepG2 cell line).
My objective was to determine the actual cell killing effects (via apoptosis
and necrosis) and relevant parameters relationship with loss in cell
viability using HepG2 as an experimental biological model. After
successful investigation of Biotoxicity of HepG2 cellular model the
author will be able to quote the protocol for real treatment of liver cancer
patients.
Submitting author: M. Atif, Department of Physics and Astronomy,
King Saud University, Riyadh 11451, Saudi Arabia, Saudi Arabia.
E-mail: [email protected]
SIMFP 2016 4 Abstracts
118
References
[1] M. Fakhar-e-Alam, N. Abbas, M. Imran and M. Atif, Journal of
Optoelectronics and Advanced Materials 12, 1481 (2004).
[2] B. Ristina, I. P. B. Ivan, and R. Kevin, Biointerphases 2, MR17
(2007).
[3] L. Harhaji, A. Isakovic, N. Raicevic, Z. Markovic, B. Todorovic
Markovic, N. Nikolic, S. Vranjes-Djuric, I. Markovic, and V.
Trajkovic, Eur. J. Pharmacol. 568, 89 (2007).
[4] K. Yang, S. Zhang, G. Zhang, X. Sun, S. T. Lee, and Z. Liu, Nano
Lett. 10, 3318 (2010).
[5] Z. Yang, Z. W. Liu, R. P. Allaker, P. Reip, J. Oxford, and Z.
Ahmad, R. J. Soc. Interface S411 (2010).
4 Abstracts SIMFP 2016
119
5 The Social Program SIMFP 2016
The Social ProgramVisit to The Farasan Islands, Thursday 18 February 2016.7:00 am –7:00 pm
The Farasan Islands are a large coral island group in the Red Sea. It islocated approximately 40 km offshore from the city of Gizan. It is aprotected area and was home to the Arabian gazelle, which is in danger ofextinction, and, in winter, migratory birds from Europe. The largest islandof the archipelago is Farasan Island; others include Sajid Island and ZufafIsland. These islands are rich in nature, wildlife and marine life, whichcan be experienced in the natural preserves or by diving into the depths ofthe sea to discover the beauty of their corals and variety of beautiful andfascinating creatures.
121
SIMFP 2016The Fifth Saudi International Meeting on Frontiers of PhysicsJazan University, Jazan, Saudi Arabia16-18 February 2016
Meeting Book
Organizers:
University Vice-Presidency for Quality and Academic Development,Physics Department and Faculty of Science,@ Jazan University, Saudi Arabia.
http://www.jazanu.edu.sa/SIMFP2016
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Department of Physics, Faculty of Science, Jazan University.Gizan 22822 P.O. Box 114, Kingdom of Saudi Arabia.c©2016 SIMFP 2016 Committee, Jazan University, All rights reserved.
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