Upload
others
View
2
Download
0
Embed Size (px)
Citation preview
?WHOSHOULDATTEND
12+2 20+ 60+ 125+INNOVATIVEFEATUREDSPEAKERS
HOURS OF NETWORKING
EVENTSINTERNATIONAL
SPEAKERSEDUCATIONAL
SESSIONS
DAyS WITH MORE THAN 45 SESSIONS, KEyNOTES & TALKS
EURO MATERIALS
SCIENCE CONGRESS
COMPANY CEO’S | COMPANY DIRECTOR’S | DOCTORS | RESEARCHERS | STUDENTS | DELEGATES |
EDUCATORS | DIRECTORS OF ASSOCIATION AND SOCIETIES | SCIENTISTS
MARCH 26-27, 2020 | PARIS, FRANCE
Mercure Paris Charles De GaulleAirport & Convention
BP 20248 -Roissypôle Ouest -Route de la commune -95713
Roissy CDG Cedex
Venue
Dear Colleagues: Greetings!I extend my warm greetings to all participants of the “Euro Materials Science Congress” in Paris, France during March 26-27, 2020.
Our theme, “To codify revamping innovations in Materials Science and Engineering”, seems to be an ordinary duty for all scientists and engineers nowadays since Materials Science & Engineering, with its novel trends and constant evolution, is everywhere around us!Biomaterials, Emerging Materials, Nanomaterials, Nanotechnology & Materials for energy conversion are some of the few examples that continue to develop at a rapid pace as evidenced by the technological revolutions.I anticipate that our Congress will shed new light on various branches of Materials Science and Engineering. It will provide ample opportunities for collaboration, networking and partnerships.I wish you exciting and fruitful couple of days in spring Paris!
Welcome Message
Dr. N M Ravindra (Ravi)Professor of Physics New Jersey Institute of Technology, USA
http://materialsscience.peersalleyconferences.com/
Euro Materials Science 2020
NM RavindraNew Jersey Institute of
Technology, USA
Niloufar RaeisHosseini
Imperial College London, UK
Helen TownleyUniversity of Oxford
UK
Lucian BaiaBabeș-Bolyai University
Romania
Mojtaba MansoorianfarNanjing Forestry University, China
Yunqi LiuChinese Academy of
Sciences, China
Mitsuhiro Ebara National Institute for Materials
Science (NIMS), Japan
Arnaud CaronKorea University of Technology
and Education, South Korea
Raman SinghMonash University
Australia
Ramesh Agarwal Washington University
USA
Ji-Huan HeSoochow University
China
Ivan Bozovic Brookhaven National
Laboratory, USA
featured speakers
featured speakers
Francisco Torrens University of Valencia
Spain
Hugo LopezUniversity of Wisconsin-
Milwaukee, USA
David Matthews University of Twente
Netherlands
S Joseph AntonyUniversity of Leeds
UK
KIRIHARA Soushyuu Osaka University
Japan
Sanichiro Yoshida Utheastern Louisiana
University, USA
PD CozzoliUniversity of Salento
Italy
Jordi SortUtonomous University
of Barcelona, Spain
Tong LinDeakin University
Australia
Osman AdiguzelFirat University
Turkey
Astuty Bt AmrinUTM
Malaysia
Sofoklis Makridis University of Patras
Greece
PRESENTATION TIME TO
WITH YOURCONNECT
PEERS
Register & Participate
in
EUROPE MATERIALS SCIENCE CONGRESS
2020
FORUM
KEYNOTE FORUM / MINI-PLENARY SESSIONS
DISTINGUISHED SPEAKERS FORUM(ORAL ABSTRACT SESSIONS)
STUDENT FORUM
Presentations under Keynote Forum or Mini-Plenary Sessions includes abstracts with remarkable research value selected by the program committee. These significant speeches are delivered by globally recognized honorable speakers and it is open to all registrants.
In this forum, speakers and experts of the research field gets an opportunity to showcase their noble research work that involves comprehensive research findings. These formal oral presentations include a wide range of talks covering basic research to advanced research findings in accordance to the theme and scientific sessions of the conference.
TYPES OF ACADEMICREGISTRATIONS
This session is particularly introduced to encourage more number of student participation at international conferences, however it is not restricted only to students since it is also available for the participants with language barrier. There are specific guidelines to be followed to prepare the poster. Poster topic should be selected only from relevant scientific sessions with in-depth technical details.
An exclusive opportunity for students and young investigators to present their research work through a formal oral presentation. Young Investigators Forum provides a global platform for young researchers and scholars to showcase their valuable contribution to the scientific world and to get acknowledged by the global scientific community of experts. It is an excellent opportunity to recognize young scientific assets with promising research ideas. These oral presentations are of shorter time duration with 10-15 minutes of informative and precise presentations in relevant scientific sessions.
NO SECRET IS SAFE SHARE YOUR RESEARCH
SPEAKERREGISTRATIONCOMBO A(Registration + 2 night’s accommodation)
COMBO B(Registration + 3 night’s accommodation)
POSTER SESSION
YOUNG INVESTIGATORS FORUM
DELEGATE REGISTRATION
http://materialsscience.peersalleyconferences.com/
EDUCATIONAL WORKSHOPS/ RESEARCH WORKSHOPS/CORPORATE WORKSHOPS/MINI- SYMPOSIA
HIGHLIGHTS OF THE DAY SESSIONS
EDUCATIONAL SESSIONS/ TRAINING PROGRAMS
MEET THE PROFESSOR @ NETWORKING SESSIONS
SCIENTIFIC TRACKS/ SESSIONS
With an aim of transferring knowledge among the participants, workshops are introduced as a part of international conferences. These interactive and occasionally practical sessions gives an opportunity for participants to engage in detail discussion. Workshops are mostly scheduled for 60 to 90-minutes. It may range from learning about a specific topic relevant to international education, products and research which sometimes involves practical demonstration. It helps in enhancing skills, knowledge and understanding of the research field in depth through interactive discussions.
“Highlights of the Day Sessions” is introduced to discuss and focus a ray upon previous day ORAL ABSTRACT presentations by experts to summarise the key findings. It helps in getting better insights into the various dimensions of the topic.
Educational Sessions or training programs are specifically designed for a better understanding of the latest findings and technologies. These are generally 45-minute sessions that gives an exposure to the multidisciplinary field, that provides in-depth learning experiences and address educational needs.
This session involves open discussion between the experts and session attendees, it gives enough time for getting answers to specific questions and doubts. It is an opportunity for attendees to increase their professional networking, sometimes also leads to an excellent collaboration opportunity.
Materials Science and Engineering | NanoMaterials, Nanoscience and Nanotechnology | Biomaterials and Medical Devices | Advanced Materials and NanoDevices | Advanced Energy Materials and Applications | Polymer Technology and Plastics | Ceramics and Composite Materials | Surface Science and Interfaces | Smart & Hybrid Materials | Materials Theory, Modeling and Charecterization | Materials Chemistry | Materials Physics | Structural and Nanostructured Materials | Graphene, Carbon and 2D Materials| Computational Materials Science | Electronic, Optical and Magnetic Materials | Advances in Dielectric, Piezoelectric Materials | Materials in Green Technology | Materials Synthesis and Processing | Metals, Mining, Metallurgy and Materials | Glass Science and Technology | Bioinspired Materials and Systems | Manufacturing Innovations and Metal Casting Technology
TYPES OF BUSINESSREGISTRATIONS
TYPES OF STUDENTREGISTRATIONS
TYPES OFADDITIONALREGISTRATIONS
SPEAKER REGISTRATION
REGISTRATION
COMBO A(Registration + 2 night’s accommodation)
YIF
COMBO B(Registration + 3 night’s accommodation)
DELEGATE REGISTRATION
Accompanying PersonE-PosterVirtual PresentationWorkshopsStart-Ups
POSTERS
COMBO A(Registration + 2 night’s accommodation)
COMBO B(Registration + 3 night’s accommodation)
NO SECRET IS SAFE SHARE YOUR RESEARCH
http://materialsscience.peersalleyconferences.com/
MATERIALS SCIENCE
ENERGy MATERIALS
NANOSCIENCE & NANOTECHNOLOGy
POLyMER SCIENCE & PLASTICS
BIOMATERIALS & MEDICAL DEVICES
CERAMICS & COMPOSITE MATERIALS
ADVANCED MATERIALS & NANODEVICES
SURFACE SCIENCE & INTERFACES
• Applications of Materials Science• Emerging Technologies in
Materials Science• Computational Materials Science• Biomimetic materials• Materials and Design• Novel Materials, Multifunctional
Materials• Quantum Materials• Materials Innovation and
Development• Carbon nanostructures and devices
• Nanochemistry • Green Nanotechnology• Carbon nanotechnology• Bionanotechnology• Nanofabrication• Functional Nanomaterials• Molecular Engineering• Nanophotonics• Nano Structured Carbon
Materials • Bionanomaterials• Drug Delivery Systems
• Nuclear Medicine• Optical Imaging• Rehabilitation Engineering• Biosensors• Tissue Engineering and
Regenerative Medicine• Ultrasound• Computational Modeling
• Advanced Engineering Materials
• Advanced Functional Materials
• Advanced Energy Materials • Advanced Healthcare
Materials • Advanced Optical Materials • Advanced Materials Interfaces • Advanced Electronic Materials • Advanced Materials
Technologies
• Batteries & Fuel Cells• Photovoltaic Materials• Renewable Energy• Energy Storage • Fossil & Nuclear Energy• Bioenergy• Geothermal• Renewable Fuels• Solar Energy
• Lasers in Polymer Science • Polymer Matrix Composites • Polymer Chemistry• Plastics and the Environment• Biopolymers• Smart Polymeric Materials• Hybrid organic-inorganic materials
synthesis• Dendritic polymers
• Advanced Composite Materials• Automotive Composites• Polymer Composites• Ceramic Lasers• Nanoceramics• Bioceramics• Nanocomposites• Biocomposites• Advanced Ceramics• Brick and Structural Clay• Refractories
• Applied Surface Science• Surfaces and Interfaces • Theoretical surface science• Surface physics• Surface Chemistry• Coatings and surface treatments• Surface characterization• Interfaces and thin films• Nanostructured materials
SMART & HyBRID MATERIALS MATERIALS CHARECTERIZATION MATERIALS CHEMISTRy MATERIALS PHySICS• Smart Materials and Structures• Magnetic smart materials• Shape Memory Alloys• Magnetostrictive• Shape Memory Polymers• Hydrogels• Electroactive Polymers• Bi-Component Fiber• Polymer hybrid materials• Bio-inorganic Hybrid Nanomaterials• Semiconductor Photocatalysis
• Material characterization Techniques
• surface characterization techniques• Ultrasonic Materials
Characterization• Atomic Theory and Atomic Structure• Material balance analysis theory• Powder Characterization• Coatings Characterization• Dispersions Characterization• Microscopy of Semiconducting
Materials
• Organic Chemistry• Inorganic Chemistry• Physical Chemistry• Theoretical Chemistry• Chemistry-Biology Interface• Materials Chemistry• Catalysis• Green chemistry• Analytical chemistry
• Atomic structure and interatomic bonding
• Condensed-Matter and Materials Physics
• Nanoscale physics • Particle physics• Solid state physics• Magnetism and superconductivity• Condensed matter physics• Solar physics
STRUCTURAL & NANOSTRUCTURED MATERIALS GRAPHENE, CARBON & 2D MATERIALS COMPUTATIONAL MATERIALS SCIENCE ELECTRONIC, OPTICAL & MAGNETIC MATERIALS
• Structural Mechanics• Nano WaterCube• Fibre reinforced cementitious
materials• Quantum dot• Quantum heterostructure• Nanowire• Nanostructured film• Gradient multilayer nanofilm • Nanocages• Magnetic nanochains• Nanocomposite
• Carbon nanotubes• Graphene and fullerenes• Graphene and ultra tin 2D materials• Graphene 3D printing• Uses on carbon Nanotubes• Graphene The Ultra-Capacitor• Graphene devices• Application of Graphene in biomedical
area
• Numerical simulation• Computational physics/chemistry• Materials/engineering databases• Nanomaterials synthesis• Advanced manufacturing technology• Process system design• 3D printing, plastic deformation• Statistical/artificial intelligence
methods
• Electronic Materials and Devices• Quantum Materials• Nanofabrication and Processing• Materials for Memory and Computation• Transparent Conductors• Advances in Optical Materials• Novel Optical Materials and Applications• Nonlinear Optical Materials• Narrow Bandgap Materials and Devices
http://materialsscience.peersalleyconferences.com/
THURSDAY, MARCH 26, 2020Concurrent Educational Sessions
GROUP PHOTO
LUNCH BREAK
COFFEE BREAK
COFFEE BREAK
GROUP PHOTO
LUNCH BREAK
COFFEE BREAK
COFFEE BREAK
DIELECTRIC MATERIALS
METALLURGy & MATERIALS
PIEZOELECTRIC MATERIALS
GLASS SCIENCE & TECHNOLOGy
MATERIALS IN GREEN TECHNOLOGy
BIOINSPIRED MATERIALS
MATERIALS SyNTHESIS & PROCESSING
MANUFACTURING INNOVATIONS
• Materials Joining• Nano and Bulk Materials Processing• Iron and Steel Technology• Integrated Computational Materials
Engineering• Corrosion Protection• Non-Ferrous Materials and Alloys • Phase Transformations
• Metallic Glasses• Photonic Glasses• Optical devices• Glass physics• Glass chemistry• Nanochannel glass materials• Glass Ceramics• Optical fiber• Optical lens design• Glass and Optical Materials
• Bioinspired self-healing materials• Responsive bio-interfaces and
surfaces• Dynamics of interacting cell-material
systems• Bio-inspired Materials and Sensing
Systems• Bioinspired materials and surfaces
for green science
• Powder metallurgy• Manufacturing Process• Welding• Machining• Shearing and Forming• Molding
METAL CASTING TECHNOLOGy CRySTALLOGRAPHy CONDENSED MATTER PHySICS MATERIALS SCIENCE APPLICATIONS• Principles of casting and splinting• Casting aluminum alloys• Casting simulation and optimization• New high-palladium casting alloys• Continuous Casting• Metal forming processes• Metal joining processes
• X-ray Crystallography• Applications of Crystallography• Crystallography in Modern Chemistry• Surface Crystallography• Solid State Crystallography• Crystallography in Materials Science• Electron crystallography• Chemical Crystallography• Aperiodic Crystals
• Principles of Condensed Matter Physics
• Condensed Matter Field Theory• Disorder in condensed matter
physics• Encyclopedic Dictionary of
Condensed Matter Physics• Condensed-Matter and Materials
Physics• Topological Aspects of
Condensed Matter Physics• Quantum Field Theory in
Condensed Matter Physics
• Material Research & Nanotechnology• Semiconductors & Microelectronics• Automotive & Aerospace• Mining and Minerals• Textile / Fibre Industry• Structural Imaging and Analysis
CHEMISTRy SEMICONDUCTORS AND SUPERCONDUCTORS MINERALOGy OPTICS
• Analytical chemistry• Physical chemistry• Organic chemistry• Inorganic chemistry• Biochemistry• Food chemistry• Environmental chemistry• Agricultural chemistry• Forensic chemistry• Geochemistry
• Superconductor Technologies for Particle Accelerators
• Superconductivity & Superconductors
• Electrodynamics of high-temperature• superconductors• Superconducting Quantum
Computing• Research• Iron-based superconductors
• Mineralogical Applications of Crystal Field Theory
• Planetary Materials• Environmental Mineralogy• Advanced Mineralogy• Topographical and descriptive
mineralogy• Basalt• Granite• Ore geology• History of mineralogy• Soil mineralogy
• Geometrical Optics• Reflection and refraction• Ray-tracing methods• Optics: Principles and Applications• Mathematical Theory of Optics• Ray Optics• Optics in Photography• Optical Coherence and Quantum
Optics
http://materialsscience.peersalleyconferences.com/
FRIDAY, MARCH 27, 2020Concurrent Educational Sessions
• Dielectrics conductors • Dielectric strength• Dielectric Materials and Applications• Dielectrics and Polarisation• Capacitor Dielectrics
• Piezoelectric Materials for Energy Harvesting
• Fundamentals of Piezoelectric Sensorics
• piezoelectric crystals• piezoelectric Sensor• piezoelectric transducer• Piezo- and Pyroelectric Materials
• Green technology architecture• Green sustainable technology• Green Technology & Alternative
Energy• Green building materials• Green materials for sustainable
• Inorganic Materials Synthesis• Thin-Film Processing• Structural and Spectroscopic Probing• Advanced Materials Design &
Processing• Fundamentals of Materials Synthesis
& Processing• Advanced Technology for Materials
Synthesis & Processing
Title: Energy Gap – Refractive Index Relations in Semiconductors –
Implications in Bandgap Engineering
NM Ravindra | New Jersey Institute of Technology, USA
Abstract:
The ability to tailor the bandgap of semiconductors for a desired application offers numerous
opportunities for implementation in communications, energy conversion, microelectronics,
optoelectronics/photonics, thermoelectrics and related areas. This talk will focus on the role of
materials, material configurations and the resulting device structures. Several case studies
reflecting the role of bandgap engineering in a variety of industry sectors will be illustrated. In
each case, the role of the temperature dependence of bandgap and refractive index and its
contributions to the device performance will be described.
Title: Preparation of Protonic Ceramics from Polymer Clay
W. Grover Coors | Hydrogène Hèlix, SAS, USA
Abstract:
Protonic ceramics made from yttrium-doped barium zirconate, BaZr0.8Y0.2O3-d, (BZY20) for hydrogen
separation membranes are difficult to prepare by conventional powder sintering. However, this obstacle has been
overcome with solid-state reactive sintering (SSRS), where the precursor powders react in-situ during sintering
rather than being calcined to the pure phase in advance. This permits fabrication of high-density ceramics
suitable for the most demanding hydrogen separation applications. With SSRS, monolithic specimens may be
prepared by almost any conventional ceramic formation method, but an added benefit of SSRS is that, unlike
with traditional powder sintering, where high sintered density depends on high powder packing density of the
‘green’ bodies, dense BZY20 is easily prepared from bodies with a large fraction of organic binder. As a result, a
variety of non-traditional ceramic fabrication processes may be employed that enable production of complex
shapes by simple, low-pressure molding processes commonly employed in the production of fine porcelain.
Plastic bodies of polymer clay are described that demonstrate the utility and scalability of such processes for
fabricating ceramic components suitable for use in electrochemical devices, such as hydrogen separation
membrane reactors. The polymer clay method facilitates molding and joining complex shapes with differing
functions-–like thin-electrode-supported membranes, ceramic/metal composite electrodes, electrical
feedthroughs, and dense structural elements containing internal channels for gas manifolding. Furthermore, the
polymer clay method uses many of the simple tools and techniques commonly employed by ceramic hobbyists.
Solid state reactive sintering of ceramic proton conductors fabricated using polymer clay bodies has the potential
to disrupt fifty years of ceramic manufacturing orthodoxy and place in the hands of thousands of investigators
the means for making and testing innovative prototype devices.
Abstract:
Photon generating and sensing semiconductor devices, such as light-emitting diodes (LED), pulsed /
continuous wave (CW) quantum well lasers (QWL), Vertical Cavity Surface Emitting Laser (VCSEL),
Quantum Dots Laser, and avalanche photo diode (APD), have been reported in various publications. In order
to improve the high speed CMOS output current, new technical features must be added with the scaling of
effective channel length for each technology node. It is feasible to build CMOS, a laser diode (in the CMOS
drain regions), and APD (in the CMOS channel / well regions) as one integral transistor. Selective epitaxial
films (compound direct bandgap materials) are deposited on silicon or underlying GaAs to form a laser. When
the MOSFET is on, light emitted from the laser is absorbed by the APD, causing an avalanche breakdown.
The high breakdown current flows through the laser to produce more lights. When the MOSFET is off, the
laser and APD are also turned off.
Power regulating semiconductor devices, such as trenched vertical power MOSFETs, laterally diffused
MOSFETs (LDMOS), and super junction MOSFETs are widely used in RF, mixed signal ASICs as discrete
or integrated power regulating devices. The optoelectronic CMOS technique may offer an efficient, new path
to high voltage and low Rdson, surpassing the traditional difficult BV and Rdson tradeoff cycles.
The Photonic CMOS technique may also improve the performance and speed of semiconductor memories,
such as DRAM and FLASH, which are based on MOSFETs. The resolution of CMOS image sensors can be
improved with the Photonic CMOSFETs, using Nonlinear Optics, and special ROIC (Read Out Integrated
Circuit) to process multiplexed analog and digital light signals.
James N. Pan | Advanced Enterprise and License Company, USA
Title: Photonic CMOSFETs for High-Speed or High-Power Logic,
Memory, and CMOS Imaging Applications
Abdel-Hakim Bouzid | IEcole de Technologie Superieure, Canada
Title: Thermal Ratcheting of Polymeric Materials under Compressive
Loading
Abstract:
This paper gives an insight of High Density PolyEthylene (HDPE) and Poly Vinyl Chloride (PVC) materials
subjected to thermal ratcheting under compression. The study investigates the influence of thermal cycling
under compressive loading of polymeric materials used in piping systems and deployed in bolted flange
connections. HPDE and PVC are two of the highly exploited materials that are increasingly popular in
domestic water and gas services but also in nuclear and petro-chemical industries. Exceptional corrosion and
chemical resistance, frictionless flow and excellent service life make them the best alternative for
conventional metal pipes in natural gas applications and domestic piping services. This research work brings
new insights on the effect of creep and thermal ratcheting on the mechanical behavior of HPDE and PVC. The
cumulative deformation of these materials under the combined influence of compression and thermal cycling
is yet to be implemented in existing design standards. The need of the hour to accommodate thermal
ratcheting behavior in the design of pressure vessel and piping components of polymers and thereby avoiding
structural and leakage failure subjected to load and temperature variation.
The thermal ratcheting of polymer materials and the thermal cycling behavior of is of utmost importance
primarily due to the inherent property of relatively low glass transition temperature. Since a good selection of
polymer materials can operate only in a moderate temperature conditions, a small perturbation in temperature
can cause noteworthy change in the physical dimensions of the structures. Thermal cycling produces
cumulative deformation that is harmful for structures made of high density polyethylene and polyvinyl
chloride materials which usually operates below 60 °C. The cyclic fluctuation of temperature is applied to the
test sample to understand the thermal ratcheting phenomenon.
Title: Ethanol conversion into hydrocarbons employing hierarchical
HZSM-5 zeolites
Pedro Nothaft Romano | Federal University of Rio de Janeiro, Brazil
Abstract:
In recent years, catalytic conversion of ethanol into hydrocarbons has attracted considerable attention, since that alcohol can be used
as a green raw material capable of providing an alternative route to produce a great range of valuable chemicals for the
petrochemical industry. In this context, the obtaining of light olefins and BTEX aromatics (benzene, toluene, ethylbenzene and
xylenes) from alcohols have attracted notable attention, since the alcohol-to-jet (ATJ) technology can provide a renewable route to
obtain kerosene from light alcohols, such as ethanol and butanol.
In order to perform the ethanol conversion into hydrocarbons, two HZSM-5 zeolites with framework SAR values equal to 23 and 53
were employed as starting materials (HZSM-5_20 and HZSM-5_50). Aiming at increasing the zeolites’ pore sizes, two hierarchical
zeolites were synthesized by means of a desilication technique (HZSM-5_PT20 and HZSM-5_PT50).
All four HZM-5 zeolites were initially evaluated regarding ethanol conversion and product distribution under the following
conditions: 360 °C, 15 bar, 38 h-1
space velocity and 3 h time on stream (TOS). The results indicated that the desilication treatment
has a positive effect concerning ethanol conversion, which reached values higher than 80% for the HZSM-5_PT50. After that, a
central composite design was employed for the optimization study with the HZSM-5_50 zeolite. The reaction parameters:
temperature (A), pressure (B), and space velocity (C) were chosen as independent variables (factors), and BTEX and C2= (ethylene)
molar concentrations (mol%) were chosen as experimental responses. It was found that maximum BTEX (benzene, toluene,
ethylbenzene, and xylenes) and minimum ethylene production were reached for the following conditions: temperature 450 °C,
pressure 20 bar, and WHSV (weight hourly space velocity) 5 h-1
.
The stability of the HZSM-5_(S50) catalyst was also investigated (Figure 1). Complete ethanol conversion was observed for the
entire 10 h TOS evaluation at 375 C, 10 bar, and 70 h-1
. On the other hand, both gaseous and organic liquid products’ distribution
changed with increasing TOS.
María Emilia Castelló | National University of La Plata, Argentina
Abstract:
This work shows in a clear and simple way the feasibility of obtaining chitosan, the study of its properties, and the
preparation of films and its characterization by different techniques. The project involves the complete process, from the
isolation from raw material available in the local environment, and its comparison with similar products of commercial
origin, until its final application through the physicochemical analysis of the same.
In the obtention of chitosan, the isolation of chitin from residues of the Patagonian shrimp (Pleoticus muelleri) and its
subsequent conversion to chitosan under different reaction conditions was evaluated. Regarding the application of these
products, a commercial chitosan was used in the preparation of films containing glycerol as a plasticizer (5, 10 and 20%
w/w). The films were obtained by the casting method from dispersions prepared combining a 1% v/v aqueous solution
of acetic acid containing glycerol, using a neutralization process for the demoulding.
In order to study the prepared materials, the products obtained from the isolated chitin were characterized by evaluating
their molecular weight (MW) and degree of deacetylation (DD) , compared with two commercial products. Chitosan
and chitosan-glycerol films were characterized by Fourier transform infrared spectroscopy (FT-IR) , UV-Visible
spectroscopy and scanning electron microscopy (SEM). In addition, its behaviour against water (contact angle and water
absorption) and mechanical properties (breakage stress, percentage elongation and elastic modulus) were studied. It was
noted that a three-day reaction time at 120 °C is necessary to obtain a chitosan sample from the extracted chitin.
Chitosan-glycerol films were found to be transparent and their properties depended on the plasticizer content, obtaining
homogeneous systems up to concentrations of 10% w/w . In addition, the films proved to be more hydrophilic than the
reference material, with smaller contact angle, higher water absorption and higher flexibility.
Title: Production and characterization of chitosan and glycerol-chitosan
films Development and the Environment
Title: Adsorption of arsenic (III) and arsenic (V) by ZnO-CuO composites
Elisban Juani Sacari Sacari | Universidad Nacional Jorge Basadre Grohmann, Peru
Abstract:
Chronic consumption of water contaminated with arsenic in locations that do not have a water
treatment plant increases the risk of developing arsenic-related diseases. We have synthesized
a compound of CuO-ZnO, using the method of precipitation assisted by ultrasound, with the
ability to effectively remove the arsenic (III and V) from the water. The compound has been
characterized by techniques such as X-ray diffraction, scanning field emission electron
microscopy, in turn, the arsenic concentration was carried out using atomic absorption
equipment with graphite furnace. The compound used has a high arsenic adsorption capacity,
removing up to 10 ppm of arsenic (V) and 2.6 ppm of arsenic (III). The effect of pH and the
competition of ions such as chlorides, sulfates, and nitrates on the arsenic removal capacity of
water was also studied, observing that the working pH range of the compound is wide (pH 3-
11), for the arsenic (V), while the behavior in the removal of arsenic (III) decreases at basic
and acids pHs, showing its highest capacity at neutral pH. Coexisting ions do not significantly
affect the removal of arsenic (V), but they do affect the ability to remove arsenic (III),
reducing their efficiency by approximately 10%. The results of this research can contribute to
the challenges that currently exist in water pollution.
Title: Biomemristors based on Organic Materials
Niloufar RaeisHosseini | Imperial College London, UK
Abstract:
A memristor is a two-terminal device with a simple metal-insulator-metal structure and its
conductance is tuned by external inputs with a memory effect. A memristor is controlled by
internal state variables and input stimuli. Resistance switching random access memory
(ReRAM) is a category of memristor and has advantages of scalability, reliability, low power
consumption, and fast switching. ReRAM that use biodegradable organic materials as its
active film is a biomemristor and has the merits of flexibility, transparency, and compatibility
with various substrates. Compared to semiconductor devices, biomemristor is inexpensive and
easy to fabricate. Assimilation of biocompatible materials in ReRAM devices offers outlooks
to use them in biomedical aplications. I represent a robust, non-volatile, flexible, and
transparent biomemristor based on biopolymer. The source of the bipolar resistive switching
behaviour will be discussed in this talk. The set/reset behaviour in the memory device based
on biopolymer makes it suitable for use in neuromorphic devices.
Title: Energy Efficient Design of New Building except New Low-rise
Residential Buildings: Cleaner and Greener Technologies, Sustainable
Abdeen Mustafa Omer | University of Nottingham, UK
Abstract:
Globally, buildings are responsible for approximately 40% of the total world annual energy
consumption. Most of this energy is for the provision of lighting, heating, cooling, and air
conditioning. Increasing awareness of the environmental impact of CO2, NOx and CFCs
emissions triggered a renewed interest in environmentally friendly cooling, and heating
technologies. Under the 1997 Montreal Protocol, governments agreed to phase out chemicals
used as refrigerants that have the potential to destroy stratospheric ozone. It was therefore
considered desirable to reduce energy consumption and decrease the rate of depletion of world
energy reserves and pollution of the environment. This article discusses a comprehensive
review of energy sources, environment and sustainable development. This includes all the
renewable energy technologies, energy efficiency systems, energy conservation scenarios,
energy savings and other mitigation measures necessary to reduce climate change.
Title: Nanoparticles for the treatment of paediatric cancers
Helen Townley | University of Oxford, UK
Abstract:
In the UK 4500 children are diagnosed with cancer every year. The types of cancers that affect children can be
quite different to those affecting adults. Our research is focussed on nanoparticulate therapies for
rhabdomysarcoma, a soft tissue cancer, and glioblastoma a brain cancer. Using nanoparticles we can deliver
cancer drugs directly into cells. Nanoparticles can accumulate at the tumour site due to the enhanced
permeation and retention effect. This can minimize off-target effects by local release of the drug. In addition,
controlled release can result in the release of drug specifically at the site of action. We have also incorporated
nanoparticles into wafers that can be placed into the surgical bed after tumour removal. This permits slow
release of an anti-chemotherapeutic drug over several weeks to ensure that any remaining cancer cells are
mopped up.
We have used natural products as effective anti-cancer agents. However, the activity of the compounds can be
quickly lost due to their volatility. Encapsulation in nanoparticles can protect the compounds from degradation
and ensure their activity for much longer periods of time. In particular, the compounds citral and ophiobolin
have been used effectively against a number of different cell lines. Furthermore, we have shown that
nanoparticles can be made from the natural material itself. Melanin is a naturally occurring pigment in the body
which is involved in a range of functions from photosensitization, thermoregulation, protection from radiation,
and free radical quenching and metal iron chelation. Iron is needed in much greater amounts by cancer cells for
their rapid proliferation. Chelation of iron in the total body would be detrimental since it is needed by all cells
in the body for proper function. However, melanin nanoparticles can be localized to the tumour and deplete the
cancerous cells of iron, resulting in cell death.
Title: Identification and first steps of characterization of a promising new
heat storage material for high temperature applications
Fouzia Achchaq | Bordeaux University, France
Abstract:
Industrial sectors such as those of metallurgy, ceramics, glass, concentrated solar thermal energy, chemistry and
so on have now to seriously consider thermal energy storage as a key part for a successful broad energy mix
achievement. Otherwise, it will be indeed very difficult to take advantage of each cutting-edge technology to
carry out a low-cost and efficient energy transition. Until now, the choice of materials to be used in the storage
units with a working temperature range varying from 300 to 600°C has been directed to the phase change
materials. These latter are mainly eutectic compositions showing the advantage of behaving like pure
substances: their fusion is congruent and occurs at a constant temperature. However, the phase diagrams
theoretical study of salt-based binary systems has shown that stoichiometric peritectic compounds have, on
average, energy densities two to three times higher than those of phase change materials (molten salts) used in
existing concentrated solar power plants, such as Archimedes in Italy for instance. This performance is related
to a reversible chemical reaction occuring in addition to the solid/liquid transition during the thermal energy
discharge process of the material.
On the one hand, this work focus thus on these advanced energy materials for ultra-compact thermal energy
storage at high temperatures (300-600°C) that can provide, at almost constant temperature and ambient
pressure, a potential energy density much higher than that of the pure and eutectic materials. This is due to their
capacity to combine all advantages provided by sensible, latent and thermochemical processes. On the other
hand, this work presents more specifically the case study of the Li4Br(OH)3 peritectic compound selected from
the LiOH/LiBR phase diagram as a highly promising candidate for heat storage applications at around 300 °C
with an outstanding energy density of 434 kWh/m3.
Title: In situ HT-SEM study of the synthesis process of a promising new
heat storage material
Philippe Legros | PLACAMAT, France
Abstract:
This study is performed in the framework of ANR-Pc2TES project dealing with the development of the
peritectic compounds as new thermal energy storage materials for temperatures varying from 300 to 600°C,
which allows covering a wide spectrum of applications. The peritectic microstructure development is much less
understood than single-phase or eutectic solidification processes. The level of comprehension drops drastically
about ionic alloys such as LiBr/LiOH binary systems. Besides, Li4Br(OH)3 performances depend strongly on a
complex interplay between the initial composition, the imposed temperature gradients, the operating
surrounding atmosphere and the solid fraction growth velocity. As a consequence, Li4Br(OH)3 heat energy
storage potential may be strongly affected. The objective of this work is hence to participate to an in-depth
understanding of the Li4Br(OH)3 formation process by establishing the critical links between the processing
conditions and the final microstructure formation. To do so, the influence of working parameters such as the
nature of the surrounding atmosphere, cooling rates and thermal gradients and so on is studied by using a hot
stage placed inside the scanning electron microscope chamber.
The first results of the in situ and real-time experiments performed on LiBr, LiOH and Li4Br(OH)3 at
secondary vacuum and then, at a nitrogen-rich environment at microscale are presented and discussed. The
thermally-induced transitions of the starting materials LiOH and LiBr have been observed highlighting the
LiOH decomposition process into Li2O. The Li4Br(OH)3 morphology, validated by X-ray diffraction tests, are
then compared to that obtained at the end of the ex situ synthesis by using the standard thermal treatment. These
results have also proven to be very useful to better understand those obtained by using the differential scanning
calorimeter afterwards.
Title: Effect of textiles’ surface on the properties of conducting polymers
composites deposited onto textile through 3D printing
Prisca Aude Eutionnat-Diffo | GEMTEX – Laboratoire de Génie et Matériaux Textiles, France
Abstract:
Thermoplastic Conducting Polymers Composites (CPCs) deposited onto textiles through 3D
printing and more specifically Fused deposition Modelling (FDM) process are recently used to
develop smart textiles for various applications. 3D printing is a technology which can exhibit
ease of processing, low cost and versatility and low waste of material. The durability and
flexibility the CPCs applied on textile materials through 3D printing are important to consider
in the development of comfortable and durable smart textiles via FDM process. For this reason,
adhesion, stress and strain at rupture, deformation and abrasion resistance of these materials
need to be optimized and understood. In this study, the influence of the textiles’ surface
characteristics on the properties of the CPCs deposited onto the textiles is approached. Indeed,
the surface of the different textile materials was characterized by measuring their roughness and
porosity; and then linked to the adhesion, the stress and strain at rupture, the deformation and
the abrasion resistance of the 3D printed CPCs onto textiles through statistical models. Based
on these models, each of these properties was optimized. It was found that higher roughness
and porosity led to better adhesion and stress at rupture but lower wear resistance (abrasion)
and deformation. These findings are important in the development of smart textiles through
FDM process.
Title: Preparation of n-hexadecane/polycaprolactone microcapsules via
single electrospraying and coaxial electrospraying: comparison of their
formation, structure and properties
Shengchang Zhang | GEMTEX – Laboratoire de Génie et Matériaux Textiles, France
Abstract:
Phase change materials (PCM) can release (or store) a large amount of latent heat when the surrounding temperature is
lower than its crystallization point (or higher than its melting point). Thus, PCM is widely applied in thermal management
and energy storage in textile sector. More meaningfully, when PCM is encapsulated into shell matrix, not only the leakage
of PCM during its phase transition can be effectively prevented, but also the thermal conductivity of PCM can be
improved significantly. Meanwhile, the durability of phase change microcapsules (mPCM) can be also prolonged.
Fabricating and designing mPCM with a core-shell structure have attracted more and more attention.
Electrospraying, as a green and high-efficiency electrohydrodynamic atomization technology, has a great advantage and
potential to fabricate microspheres or microcapsules. One of the main benefits of the use of the electrospraying route in
preparation of mPCM is the control of the structure and properties of mPCM via adjusting the operating parameters as
well as solution properties. Among a series of operating parameters, using different electrosprayed nozzles can result in
different morphoogies and thermal properties from electrosprayed mPCM. Thus, on the one hand, the formation of Taylor
cone and the break-up process of charged droplets depend on the kind of electrosprayed nozzle used. On the other hand,
the diffusion of PCM and the evaporation of solvent during the flight process of electrosprayed droplets obtained from
different nozzles are also different. Therefore, it is interesting to investigate the effects of nozzle geometry on the
structure and properties of electrosprayed mPCM. In this study, a single nozzle and a coaxial nozzle were applied to
synthetize n-hexadecane/polycaprolactone microcapsules. The size and morphology of electrosprayed microcapsules were
characterized by scanning electron microscopy (SEM) and optical microscopy (OM). The core-shell structure of
electrosprayed microcapsules was analyzed via transmission electron microscopy (TEM). The thermal behaviour and
thermal degradation were studied via differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA).
From these experimental results, the comparison between the use of a single or coaxial nozzle in the preparation of
electrosprayed mPCM with different structures and properties was realized.
Title: Optical Properties Tunability of hybrid Ferromagnetic-Plasmonic
nanostructures
Maha Hadded | University of Technology of Troyes, France
Abstract:
Plasmonic nanoparticles have interesting applications in various fields such as electronics, optoelectronics,
biotechnology, and medicine. Nanoparticles purely made of gold or silver have aroused particular interest in
recent decades, but unfortunately they are expensive and also limited in physical properties. The challenge
nowadays is to minimize the cost of plasmonic nanoparticles and especially to explore more functionalities than
gold or silver nanoparticles. In our present work we are interested in hybrid ferromagnetic-plasmonic
nanoparticles. We limit ourselves here to a theoretical analysis of the optical response of model nanostructures
with two layers (ferromagnetic/gold) and three layers (gold/ferromagnetic/gold). The scattering and absorption
efficiencies of light by a single magnetoplasmonic nanoparticle embedded in a non-absorbing, isotropic and
homogeneous medium are computed numerically in the framework of finite-difference time-domain formalism.
For Fe3O4/Au and Co/Au nanoparticles, our simulation highlights a strong absorption resonance whose amplitude
and spectral position strongly depend on the ferromagnetic-layer thickness and the aspect ratio of the
nanostructure. The resonance peak is found to blushift in the case of Co/Au nanoparticle, whereas it redshifts in
the case of Fe3O4/Au nanostructure, as the thickness of ferromagnetic-layer and the aspect ratio increase. For the
proposed Au/Co/Au nanostructure, the thickness of the gold-layer is found to be a determining parameter in
controlling the magnitude and the spectral position of the absorption and light scattering resonances. The
tunability of the absorption resonance of light by such hybrid ferromagnetic/plasmonic nanostructures in the Vis-
NIR range make these nanoparticles promising agents for bioimaging and photothermal therapy applications.
Title: SnTe thermoelectric materials: last advances
Bertrand Lenoir | Lorraine University, France
Abstract:
Thermoelectrics are the basis of many solid-state thermal to electrical conversion devices or Peltier cooling
devices actively considered for waste heat recovery, energy harvesting and cooling applications free of
environmentally harmful coolant gasses.
Thermoelectric materials require a unique combination of thermal and electric transport properties in order to be
efficient converters. For instance, it is desirable to have simultaneously a high thermopower and a low electrical
resistivity and thermal conductivity in order to reach high dimensionless figure of merit (ZT). Narrow-band-gap
IV-VI semiconductors represent a historically important class of thermoelectric materials. As one of the
representative compound of this class, tin telluride (SnTe) has been reinvestigated over the last years
demonstrating its potential as a high-temperature (400 – 800K) p-type thermoelectric material.
In this presentation, we report on the recent advances made on SnTe based materials to enhance their
thermoelectric performance. This review will cover the key strategies including defects engineering, band
convergence, resonant doping, synergistic engineering, and structure design. Thanks to these approaches,
significant progress have been made on SnTe, making this material a robust candidate to replace toxic PbTe‐based
thermoelectric materials for electrical power generation.
Abstract should give clear indication of the objectives, scope, results, methods used, and conclusion of your work.
One figure and one table can be included in your results and discussions.
Title: Influence of degree of filling on mechanical properties of PLA
obtained by 3D printing methods
Anna Gawel | Cracow University of Technology, Poland
Abstract:
The introduction explains the basic terms of method of production, crystallization
and hydrolytic degradation of polylactide and their meaning for changing the properties
of this material. Samples employed in this investigations were made of polylactide acid using a
3Dgence printer. Half of the specimens were subjected to crystallization process (C), which
consisted of annealing in heating chamber at 80 degrees of Celsius for 2 hours and then slowly
cooling. The study part of the paper presents the assessment of the impact of the degree of filling
of samples (constant print angle 45 deg) made of a polylactide filament by 3D printing on the
basic physico-mechanical properties before and after the hydrolytic degradation process and the
effect of crystallization on the change of properties at the high temperature. From a number of
tests of strength properties of the material, it was found that samples with a lower degree of filling
have much worse results of strength tests. The formation of crystalline lattices significantly
increases the discussed parameters and hydrolytic degradation in most cases weakens the sample.
The degree of filling of the sample has a major impact on the strength properties of the samples.
A smaller printing angle generates a shorter printing time and decrease in density. Performing
crystallization of the sample improves its strength and modulus of elasticity, and slightly reduces
deformation at break, especially in the elevated temperature range. Hydrolytic degradation
reduces the effect of crystallization on the obtained strength properties.
Title: Liposomes and gold nanoparticles for efficient bionano catalysis in an
aqueous solutions
Ryszard Ostaszeski | Institute of Organiac Chemistry Polish Academy of Sciences,
Poland
Abstract:
Chemical reaction can be guided by soft, dispersed interface rich aqueous systems and nanoparticles1. Aqueous
solutions are considered to be sustainable, environmentally friendly reaction media, but its use is often limited by
poor reactant solubility. This limitation can be overcome by converting aqueous solutions into soft, dispersed
interface- rich systems such as polyelectrolyte solutions, micellar solutions, oil- in-water microemulsions or
vesicle dispersions. All consist of homogeneously distributed dynamic structures that, in a fashion reminiscent of
enzymes, provide local environments that are different from the bulk solution. The presence of soft structures
leads to selective reaction accelerations and also changes in reaction pathways, whereby chemical reactions are
guided towards desired products. We were focused our attention on multicomponent reactions which can be
accelerated in an aqueous vesicle system2. This lead to a new, alternative route for the synthesis of a variety of a-
aminoacyl amides via the four-component Ugi3, to a-acyloxy carboxamides via a chemoenzymatic cascade with
Passerini raction4 and chemoenzymatic tandem oxidation–Ugi reaction promoted by surfactants leading to
formation of peptidomimetics5. On order to achieve effective regulation of enzyme catalyzed processes the
influence of gold nanoparticles on model enantioselective enzymatic reaction was investigated. Two different
approaches toward stereoselective bionanocatalysis were combined based on enzyme immobilized and embedded
on gold nanoparticles6. Over twenty different hydrolases were tested and only in two cases model reaction was
indeed catalyzed by embedded enzymes. The influence of liposomes and gold nanoparticles on the course of
selected organic reaction will be discussed and presented on selected examples. Several important factors
associated with nanoparticles structures and surfactant additives to reactions for efficient bionano catalysis will be
emphasized.
Title: Motley String Theory and New Physics
George Yury Matveev | IT Consultant, Stockholm, Sweden
Abstract:
Postulate 1: Every spacial dimension of String has unique intrinsic property which we call "color".
Postulate 2: There is force acting on spacial dimensions of string such that it makes dimensions of complementary colors
(Red_i , Green_i , Blue_i ) interact and unite in a colorless threads perceived as observable dimensions.
"Color" property of String's spacial dimensions is somewhat similar to 3 "color charges" of quarks in Quantum Chromo
Dynamics, but has different meaning, since it is viewed here as intrinsic characteristic of spacial dimensions in Motley
String theory corresponding to different values of string tension tensor T_i in different dimensions. String state at very high
energies (early universe, Planck length about 10 -33 cm) is such that all String spacial dimensions are in a free state similar
to quark-gluon plasma of Quantum Chromo Dynamics.
At lower energies (modern universe) strong color force becomes dominant and makes String's complimentary (or using
classical optics term "additive") spacial dimensions (Red_i , Green_i , Blue_i ) interact to form 3 threads (in case of 9+1
dimensional Superstring) which appear to be colorless from distances larger than size of baryons (proton and neutron).
Spacial dimensions of additive "colors" are "glued" together.
Observable by humans Gray spacial dimensions D(i) are essentially compactified threads of Red(i), Green(i) and Blue(i)
string spacial dimensions:
D(i) = R(i) + G(i) + B(i), where i =1,2,3
On the other hand, Gluons are known to carry and transmit "color charge" between quarks.
Title: Investigating the Effect of Doping TiO2 Compact Layer by Cu
Ions for High Performance Perovskite Solar Cells
Alaa Ahmed Zaky Hussein | National Center for Scientific Research, Greece
Abstract:
Perovskite solar cells (PSCs) have been recently developed as the most promising alternative to silicon-based
counterparts. In the n-i-p configuration, the electron transporting layer (ETL) plays a vital role in the power
conversion efficiency (PCE) of PSCs. High electron mobility and conductivity of the ETL, especially when it is a
compact one, are necessary towards highly performing PSCs by reducing excessive charge accumulation and
guaranteeing effective electron passage to the ETL/perovskite interface.
Contact angle measurements confirmed that the introduction of copper ions (Cu2+
) into the compact TiO2 layer
increased its hydrophobicity, thus favoring improved perovskite crystallization, a fact corroborated by XRD
analysis. The trap-filled limit voltage (VTFL) for FTO/ETL /MAPbI3/PCBM/Ag devices shows a significant
decrease with the Cu-TiO2 compact layers, which is associated with lower traps density for the corresponding
perovskite film. Moreover, the doping of Cu2+
in TiO2 also affects the photovoltaic properties (Figure 1). Indeed,
a PCE higher than 18% was obtained for the PSCs with the optimal Cu+2
concentration together with open circuit
voltage (Voc) of 1.1 V, current density (Jsc) of 23.15 mA·cm−2
, and a fill factor (FF) of 73%. These modified cells
outperform the performance of the reference device (using the TiO2 ETL) showing a PCE equal to 15.78% (with
Voc equal to 1.07 V, Jsc of 20.87 mA cm−2
, and FF equal to 70 %). Finally aging tests realized under controlled
under controlled conditions confirmed that the copper-doped devices showed higher stability in comparison with
the non-doped ones.
Title: Determination of the wave parameters of the gravitational field
and their confirmation
Valentyn Nastasenko | Kherson state maritime academy, Ukarine
Abstract:
An analytical analysis of the gravitational constant G = 6.6739010-11
m3/(kgs
2), in the framework
of its dimension, which is associated with Planck’s values of length, time and mass, showed that a
frequency can be distinguished in it. In further works, it was associated with the frequency of
oscillations of the waves of the gravitational field νG = 7.41042
s-1
(Nastasenko constant). Its use,
within the framework of the wave function λG = с/νG, made it possible to determine all other
parameters of the gravitational field: wavelength
λG = 4.051249410-35
m, amplitude AG = λG = 4.051249410-35
m, period TG = 13.5|135|10-44
s,
energy EG = 4,90329109 J.
On this basis, the force of action of the gravitational field was determined. For the Earth, its use
made it possible to determine the acceleration of gravity through the found wave parameters of
the gravitational field. The results obtained completely coincide with the
g = 9.81 m/s2 value determined through the interaction of the masses according to Newton’s law
of universal gravitation. A similar coincidence of the results was obtained for the attractive forces
of the moon, the sun and other objects of the solar system found through the wave parameters of
the gravitational field and according to Newton’s law.
Thus, the reliability of the proposed wave parameters of the gravitational field was strictly
proved.
Title: Quantum metric of harmonic motion of matter
Eugene Machusky | Kyiv Polytechnic Institute, Ukraine
Abstract:
The information-entropy-energy paradigm of quantum metric and quantum signal processing is logically developed and mathematically
justified using combination of renormalized gauge theories with direct and inverse functional analysis. The analytically obtained
matrices of mutual functional relationships of transcendental numbers pi and e with infinite progressive and inverse natural sets
completely describe the topology of subatomic and hyper-atomic space, create a quantum computational bridge between continuous and
discrete mathematics, between special and general theory of relativity, between theories of strings, supersymmetry, loop gravity and
multiverse. The median harmonic values and entropy of the basic quantum units are calculated with an accuracy that is limited only by
the bit capacity of computer. It is shown that the new SI-2019 metric system and the standard physical model have some methodological
fallacies that limit the extreme accuracy of the mutual coordination of fundamental quantum units and introduce excessive informational
entropy in quantum communications, quantum information processing, and quantum technology.
During the past 100 years, many scientists have been amazed at the remarkable mathematical efficiency of quantum physics. But the
simplest and perhaps the only reason for this is that quantum physics, by its nature and origin, is actually no more and no less than the
universal metric and universal informational system based on well-measured values and decimal orders of energy quanta. This can be
clearly illustrated by the recently discovered gauge set of mutually related parametric equations that functionally connect the numbers pi
and e and their decimal gradients with an infinite series of integers and their inverse values. Britannica.com define the gauge theory as
class of quantum field theory involving both quantum mechanics and special theory of relativity that is commonly used to describe
subatomic particles and their associated wave fields. In a gauge theory, there are transformations of the field variables that leaves the
basic physics of the quantum field unchanged. This condition, called gauge invariance, gives the theory a certain symmetry, which
governs its equations. In short, the structure of the group of gauge transformations in a particular gauge theory entails general restrictions
on the way in which the field described by that theory can interact with other fields and elementary particles. Renormalization by which
divergent parts of a calculation, leading to nonsensical infinite results, are absorbed by redefinition into a few measurable quantities, so
yielding finite answers.
Title: Specific features of the crystallinity and morphology in designing
materials for targeted applications
Lucian Baia| Babeș-Bolyai University, Romania
Abstract:
Nowadays, it is widely accepted that a deep understanding of the morphological and structural characteristics of the used
(nano)structures is needed for obtaining a maximum efficiency for a desired application. The type of the structure, e.g.,
crystalline, amorphous, etc., its shape and size are key issues in designing novel materials with tuned properties. The present
work is dealing with a selection of such topics. The first one relates about the influence of morphological particularities of
anatase titania crystals on the photocatalytic efficiency to decontaminate chemically polluted water. The shape controlled
titania microcrystals obtained hydrothermally in the presence of carbon nanotubes, with a high amount of the most reactive
{001} facet, were investigated. The developed holes and other significant structural alterations observed after samples
calcination were found to enhance the photocatalytic activity of titania crystals. The causes that generated the noticed
improvements were also analyzed.
The second topic is dealing with hierarchical TiO2 nanostructures synthesized by hydrothermal method by involving two
precursors, namely tetraisopropyl orthotitanate (TTIP) and tetrabutyl orthotitanate (TBU), It was found that their structural
and optical properties are dependent on the synthesis parameters and the developed TiO2 crystalline systems’ crystal phase
distribution and the morphology are very sensitive to the composition of the solvothermal system. The TBU samples
exhibited higher conversion rate in photodegradation of an etalon pollutant.
The third topic reports about the graphene oxide (GO) based membranes as important materials used in smart technologies
and applications. Free-standing graphene oxide (GO) membranes were developed by involving a scaled-up, non-toxic, and
low cost self-assembly process. The tunability of the morphological, structural and optical properties of the membranes was
achieved by using different self-assembly time. A structural model for the membrane formation during the self-assembly
process was also proposed taking into consideration the structural and morphological differences (i.e. sheet size, surface
chemistry and surface charge) between the three-sorted GO fractions.
Title: Impact of ionizing irradiation on LEDs during operation
Alexandr Vasilevich Gradoboev | Tomsk Polytechnic University, Russia
Abstract:
Radiation technologies allow to control in a guided way of semiconductor devices parameters. The purpose of this
work is to develop of radiation technologies aimed at improving of radiation resistance and reliability of LEDs
based upon AlGaAs double heterostructures. The objects of this investigation were industrial LEDs manufactured
on the basis of dual AlGaAs heterostructures with 5 μm active layer grown on the monocrystalline n-GaAs wafer
by means of liquid epitaxy. Characterized parameters of LEDs were taken using an automated measurement
complex with spherical photometric integrator. Irradiation by static gamma-quanta was carried out on a stationary
installation based on cobalt-60 isotope. The level of exposure was characterized by absorbed dose (Gy). The level
of exposure was characterized by neutron fluence Fn (cm-2). The reliability was estimated by results of step-by-
step tests. The parameters of LEDs were measured before, after irradiation and after every step of accelerated
tests. The research of radiation resistance and reliability of LEDs based upon AlGaAs are presented. Radiation
model is developed according to these results. It describes the changes of emissive power by three distinctive
stages. Reliability model is developed identically to radiation model. The influence of preliminary irradiation of
LEDs by gamma-quanta and fast neutrons on their further radiation resistance is observed. Preliminary irradiation
allows to significantly improve the radiation resistance of LEDs due to increase of ohmic contacts resistance and
radiation-stimulated reconstruction of the initial defect structure of the LED crystal. The represented “memory
effect” of the radiation influence is observed for other types of semiconductor devices. Choice of optimum
preliminary irradiation level of LEDs allows to increase the reliability of ohmic contacts, to reduce the rate of the
emissive power decrease and the probability of catastrophic failure.
Proposed technologies can be recommended for other types of semiconductor devices.
Title: Temperature-time superposition principle of metals in the design
of materials
Nina Selyutina | Saint-Petersburg State University, Russia
Abstract:
Based on the "temperature" relaxation model of plasticity, effects of the irreversible deformation
of metals that appear in the conditions of different temperature and rate regimes are studied. The
relaxation model of plasticity used is able to predict the anomalous phenomenon of increasing the
point of maximum stress together with the applied load, related to one of the temporary effects of
plastic deformation. Using a set of parameters of the plasticity relaxation model, it is possible to
predict various types of deformation curves that are realized on one material in a wide range of
strain rates. Dependencies of the structural-temporal characteristics on temperature for 2519А
aluminum alloys are constructed. The rate and temperature dependencies of the yield stress are
obtained. The appearance of the yield drop on the deformation dependence for 2519А aluminum
alloys at a temperature of -900C in the range of strain rates 1000–4000 1/s. The appearance of the
yield drop on the deformation dependence for 2519А aluminum alloys at a strain rate of 4000 1/s
in the temperature range from -90 to 3500C.
Title: Thermo- mechanical properties of filled composites across length
scales and coupled effects in second gradient thermoelasticity and heat
conductivity
Sergey Lurie | Institute of Applied Mechanics of RAS, Russia
Abstract:
The effective properties for filled composite under mechanical and temperature loading are modelled for the coupled thermo-mechanical
problem. We use the gradient theory of the coupled thermoelasticity and thermal conductivity, which is constructed on the basis of a
generalized model of media with defects fields. The variational model of the coupled thermodynamic for reversible and irreversible
processes is constructed by introducing non-integrable variational forms describing the spectrum of dissipation channels. As a particular
case a reversible model of coupled gradient thermoelasticity and thermal conductivity was formulated, where all non-classical modules
are defined through the well-known thermomechanical parameters. Adhesion mechanical and temperature surface interactions take into
account. We show that the of gradient thermoelastisity allow explain the existence of the possible effect of the stresses localization near
boundaries of the different phases in the composites which are important for the strength estimation. On the other side taking into
account the adhesion model make it possible to simulate simultaneously thermal resistance effects and describe both effects:
anomalously high effective thermal conductivity and extremely low effective thermal conductivity of micro-nanocomposites, depending
on the interfacial properties of the bounds.
We investigate the averaging tools for modelling of the effective properties of composites and compare the Mori-Tanaka method and
self-consistent Eshelby method. Using numerical tests we established that for the considered gradient problem only the self consistent
Eshelby method can be used to predict effective properties of composites with small size of inclusions, when the their diameter of has
the order of the scale parameter.
We found that for composites with micro- nanostructures, anomalous effects of percolation and separation of local heat fluxes in the
matrix has place, depending on the relative orientation of the force loading, heat flux vectors and size of inclusions.
Title: Multifunctional thin coatings based on Me-Al-N
(Zr1-xAlxN, Ti1-xAlxN)
Anna Kameneva | Perm National Research Polytechnic University, Russia
Abstract:
Single-component coatings with microstructure gradient of layers are difficult to obtain with complex functional properties. However,
this obstacle has been overcome with Me-Al-N coatings, where the each interleaved layers have a given values of microstructure, phase
and elemental composition. In addition, a variety of interleaved layers characteristics was employed that enable complex of tribological,
physico-mechanical, heat-resistant, crack-resistant, corrosion and adhesive properties. Multilayer thin coatings may be prepared by
almost any PVD methods, but an added benefit of pulse magnetron sputtering is low deposition process temperature, acceptable for tools
and friction pairs with a low tempering temperature. The studies and tests methodology of coatings are described in works.
Multifunctional coatings with the synergistic effect of stoichiometric layers have been developed. The common feature of all interleaved
nanostructured layers is their high physical and mechanical properties. Individual functionality of layers: the layer with the maximum
value of cubic phase, ZrN, exhibits the greatest anodic dissolution inhibition in 5%NaOH; two interleaved layers Zr1-хAlxN and Ti1-хAlxN
with maximum value of phases Ti3Al2N2 and Zr3AlN, respectively, - the greatest thermodynamic stability and wear resistance. The
achieved corrosion inhibition efficiency in 5%NaOH - over 3000 times, the current inhibition in the passive state -2000 times.
The best collection of wear, physical and mechanical properties is f=0.2, H=36 GPa, E=358 GPa, We=76%. This permits fabrication of
coatings Me-Al-N based on layers Zr1-хAlxN and Ti1-хAlxN suitable for the most demanding industry applications.
This work was carried out as part of the project “Control of the phase and elemental composition, structure and texture of the Ti1–xAlxN,
Zr1–xAlxN and Cr1–xAlxN layers of Me1–xAlxN multilayer coatings for obtaining them with complex of tribological, physico-mechanical,
heat-resistant, crack-resistant, corrosion and adhesive properties» with the support of the Federal state budget institution "Russian
Academy of Sciences".
Title: Cathodes temperature effect on their structural properties during
growth of Ti1-xAlxN thin coatings by cathodic arc evaporation
Natalia Kameneva | Perm National Research Polytechnic University, Russia
Abstract:
Effects of temperature and thermal-physical properties of cathodes on their structural properties are investigated for the case
of Ti1−xAlxN deposition by cathodic arc evaporation. Flowing or recirculated water was used for cathodes cooling. The
cathode erosion zone morphology as well as its failure was studied using the field emission electron microscope Ultra 55 with
EDAX microanalyzer. Generation of defects in the cathode erosion zone, as indicated by craters with microjets and
microdrops, forming on their boundaries, or microstreams, joining into rod-like structures, is found to be directly connected to
an increased cathodes temperature if they cooled down by recirculated water. It is concluded that the erosion in Ti cathode
spots is of non-thermal character. Diameter Ti craters change from 60...500 μm up to 350 ... 400 nm if Ti cathode is cooled by
flowing water during evaporation. Nanoscale equilibrium structures are formed in the process of primary recrystallization of
the Ti cathode. The results also show that of low-melting cathode Al is most sensitive to cooling water temperature. Change
of brittle fracture mechanism to viscous is observed as Al cathode temperature was decreased.
Complex research allowed to state, that non-equilibrium processes taking place on the cathode surfaces are similarly caused
by the dynamics of change in thermal conditions of processes occurring in them.
This work was carried out as part of the project “Control of the phase and elemental composition, structure and texture of the
Ti1–xAlxN, Zr1–xAlxN and Cr1–xAlxN layers of Me1–xAlxN multilayer coatings for obtaining them with complex of tribological,
physico-mechanical, heat-resistant, crack-resistant, corrosion and adhesive properties» with the support of the Federal state
budget institution "Russian Academy of Sciences".
Title: 2D oxygen diffusion in Ln tungstates synthesized by mechanical
activation
Vladislav Alexandrovich Sadykov | Boreskov Institute of Catalysis, Russia
Abstract:
Oxygen mobility is important characteristic of materials for hydrogen separation membranes due to various protonic
transport mechanisms and additional hydrogen yield related to water splitting reaction. This work aims at elucidating oxygen
transport features of Ln tungstates as promising materials for hydrogen separation membranes with high protonic
conductivity (~10-4
S/cm at 600 °C).
La27W5O55.5 (LWO), Nd5.5WO11.25-δ (NWO), Nd5.5W0.5Mo0.5O11.25-δ (NWMO) and (Nd5/6La1/6)5.5WO11.25-δ (NLWO) were
synthesized by the mechanical activation and sintered at 1100 °C. The materials were characterized by X-ray diffraction
(XRD) and transmission electron microscopy (TEM). Their oxygen mobility and surface reactivity were studied by isotope
exchange with C18
O2 in a flow reactor in temperature programmed and isothermal modes.
According to XRD data, the materials obtained were distorted double fluorites. LWO and NWO contained small amounts of
Ln2O3 admixture, while NWMO and NLWO were single-phase oxides. Extended defects such as grain boundaries, stacking
faults and surface steps/terraces were observed on TEM images. These features allow fast diffusion transport along grain
boundaries (DO ~ 10-6
cm2/s at 700 °C) and slower diffusion within grains’ bulk (DO ~ 10
-11, 10
-12 and 10
-13 cm
2/s at 700 °C
for fast, “middle” and slow diffusion channels) (2D diffusion). The model gives the best description of experimental data.
Calculated oxygen tracer diffusion coefficient and effective activation energy values are given
Hence, the features of Ln tungstates studied demonstrated their high potential for using in catalytic membrane reactors.
Different parts of this work were supported by Russian Scientific Foundation [Project 16-13-00112] and the budget project
#АААА-А17-117041110045-9 for Boreskov Institute of Catalysis.
Title: Performance of Polymer Membranes by Incorporation of Novel
Hybrid Carbon Modifiers and Its Application for Pervaporation and Gas
Separation
Alexandra Pulyalina | Saint Petersburg State University, Russia
Abstract:
Membrane separation processes are an essential part of scientific and technical progress in many areas. Currently, the
significant stage on the way of membrane processes application is the design of membranes with specific parameters as well
as high permeability and selectivity. The creation of hybrid materials is currently one of the most promising ways to modify
the properties of materials. Thus, the aim of this study was to expand the field of application of polymer membranes by
modifying them with novel carbon fillers of different architecture and nature, giving special attention to the study of the
physicochemical properties of new materials.
In the present work, the polymer matrixes were modified of several novel types of nanoparticles: a) endohedral fullerene,
encapsulated iron atom, and b) star-shaped macromolecules with polymer arms grafted onto fullerene C60.
The thermal stability and glass transition temperature of membranes were estimated by thermogravimetric analysis and
differential scanning calorimetry. Peculiarity of membrane structure was study by scanning electron microscopy and atomic
force microscopy. Physicochemical properties were determined such as density, fractional free volume, contact angles.
Transport properties were estimated by sorption, gas separation and pervaporation (or evaporation of liquid through
membrane).
The inclusion of new carbon modifiers contributes to a significant change in both the morphology and the physicochemical
properties of polymer films. It has been shown that the creation of hybrid membranes based on industrial aromatic
polyimide P84 with the introduction of endofullerenes improves transport properties in separation of a practically
significant methanol-methyl acetate mixture. The introduction of a star modifiers increase the efficiency of the gas
separation and purification of industrial solvents.
The enhanced pervaporation and gas separation performance is especially attractive for further studies in practical
application.
Title: Development of starch-based porphyrinoid photosensitizers
Idalina José Monteiro Gonçalves | CICECO - Aveiro Institute of Materials, Portugal
Abstract:
Porphyrinoid photosensitizers have been used in anti-infective strategies such as the photodynamic
antimicrobial therapy. Targeting to extend their application range, porphyrinoid photosensitizers
have been combined with polymer matrices that work as carriers and/or immobilization supports.
In this work, owing to develop a photosensitive carrier with biodegradable and biocompatible
properties, potato starch films doped with porphyrins were developed. The influence of
porphyrin’s concentration on the optical, photophysical, physicochemical, mechanical, and
biological properties of the obtained starch films was evaluated.
Porphyrins give rise to transparent starch films changing from yellowish to reddish, depending on
their native chemical structure. They also change the films’ water sensitivity and mechanical
performance. Moreover, due to their ability of generating reactive oxygen species, the developed
starch/porphyrin-based films inhibit the Gram-negative Escherichia coli bacterium growth.
Therefore, the incorporation of porphyrins into starch-based formulations reveals to be a suitable
strategy to develop newly photosensitive biomaterials with improved mechanical and water
tolerance performance.
Title: Magnetic-electric nanofibers by electrospinning
Bernardo Almeida | University of Minho, Portugal
Abstract:
Nanostructured ferromagnetic (magnetostrictive) - ferroelectric (piezoelectric) composite materials presenting a
coupling between the electric and magnetic degrees of freedom have been attracting much scientific and
technological interest. The elastic interaction between both phases induces a coupling behavior, the so called
magnetoelectric effect. When reduced to the nanoscale they can be used as building blocks for nanoelectronic
devices, with a coupling either to the electric polarization, to the magnetization, or to both. In this respect,
electrospinning is a low cost versatile method for producing fibers with diameters down to a few tens of
nanometers. Electrospinning is based on the high voltage jet drawing of a polymer solution or melt through a
capillary (needle) and has been shown to be a very convenient approach for nanofibers production of polar and
magnetic materials.
In this work, we have studied the synthesis of single phase and composite magnetic and multiferroic nanofibers by
electrospinning. For the magnetic phase, cobalt ferrite (CFO) was used, due to its high magnetostriction. CrI3, that
is a magnetic semiconductor, was also applied. Barium titanate (BTO) was used for the piezoelectric phase. The
corresponding sol-gel precursor solutions were mixed and subsequently spun to form single phase and composite
nanofibers with different concentrations. The X-ray diffraction studies show that the fibers are polycrystalline with
the tetragonal-BTO phase, cubic spinel CFO and C2/m CrI3 structure. The Raman spectra presented the
corresponding characteristic modes of the phases. Due to the phases nanoscopic grain sizes, the dielectric
measurements indicate that the ferroelectric transition of BTO is broadened, and its temperature is reduced, as the
BTO concentration decreases in the fibers. The measured temperature dependence of the magnetization indicates
the presence of ferromagnetism in the nanofibers. The influence of the magnetic phase content in the prepared
nanofibers, on their structural, electrical and magnetic properties will be presented.
Title: Stress Relaxation of Composites with Nano-enhanced Resin after Low
Velocity Impact Loads
Paulo Nobre Balbis dos Reis | University of Beira Interior, Portugal
Abstract:
Carbon fibre composites offer an attractive potential for reducing the weight of high-performance structures as consequence
of their high specific strength and stiffness. These materials offer excellent in-plane performance, but they have inferior
through-thickness properties, where, in case of impact loads, various types of damages can occur. These damages are very
dangerous because they are not easily detected visually, and they can affect significantly the residual properties and structural
integrity of those materials.
In order to improve the impact strength, literature suggests the nanoscale reinforcements as a good strategy, because they,
simultaneously, increase the mechanical performance and thermal properties. In terms of impact performance, the reduced
damage zone size observed is attributed to the increased stiffness and resistance to damage progression of the nanophased
laminates. However, polymer composites are prone to creep and stress relaxation as consequence of the inherent
viscoelasticity of the matrix phase, which is a great challenge when they are used in long-term applications.
Therefore, the main goal of this work is to study the stress relaxation behaviour of carbon laminates with an epoxy resin
enhanced by carbon nanofibers (CNF). Firstly, different percentages in weight were used to obtain the best flexural strength
and impact resistance. It was possible to conclude that, for both properties, the ideal amount was 0.75% by weight. For this
value, stress relaxation tests were performed, and the results obtained compared against the laminates with neat resin. In both
systems the stress decreases with the time, however, this decrease is more pronounced for laminates with neat resin. The same
tendency was observed for laminates subjected to impact, but the existence of impact damages in the composite increases the
overall relaxation. Therefore, more relaxation was observed for higher impact energies as a consequence of greater damages.
Finally, the results were fitted following the Kohlrausch-Williams-Watts equation, evidencing good accuracy of the model for
the stress relaxation time.
Title: Electric field-driven reconfigurable multistable topological defect
patterns
Samo Kralj | University of Maribor, Slovenia
Abstract:
Topological defects appear in symmetry breaking phase transitions and are ubiquitous throughout
Nature. As an ideal testbed for their study, nematic liquid crystals (NLCs) and their defect
configurations could be exploited in a rich variety of different technological applications. Here we
report on robust experimental and theoretical investigations in which an external electric field is
used to switch between pre-determined and stable line defect configurations in a thin NLC cell. We
enable a rich variety of defect structures in a NLC by implementing an in-house-developed Atomic
Force Microscope nanolithography method. We scribe a 4x4 lattice-like template of integer-
strength surface point defects of alternating sign. This configuration enables 18 different stable
“letters” of an “alphabet”, in which each letter consists of a pattern of chargeless defect lines
connecting neighbouring surface-imposed defects. One can reversibly switch among different
letters by imposing an appropriate external electric field, such that the new letter remains stable
even when the field is switched off. We demonstrate this proof-of-concept “remote” rewiring both
experimentally and numerically. The demonstrated mechanism may lead to a variety of
applications, such as multistable optical displays and rewirable nanowires. Moreover, these defects
may be classical analogs of intriguing Majorana particles, thus providing insight into the
fundamental behaviour of Nature.
Title: Chromium doped alumina usability in dosimetry
Ernests Einbergs | University of Latvia
Abstract:
Study of radiation induced electronic processes in materials precipitated a now widespread
material science field called dosimetry, which specializes in ionizing radiation detection and
quantification. The performance of most materials used for dosimetry applications is mainly
governed by the impurity ions in the crystalline lattice coupled with lattice imperfections around
them (with a meaningful difference in size or oxidation state compared to host ions). In this study,
we explored augmentation of luminescent properties of alumina caused by chromium ion doping,
with a goal of increasing the quantity of charge carrier traps in the crystalline lattice. Porous
microparticles synthesized with sol-gel method displayed higher thermoluminescent
response compared to that of a single crystalline ruby. We have found that 0.2 wt% of
yielded the highest XRL and TSL readout of all the studied additive concentrations added to
alumina during synthesis. Our results display a promising use case for Cr doped alumina.
Conducted study provides information on a new alternative to already existing ionizing radiation
dosimetric materials with desirable physical and chemical properties as well as relatively lowers
manufacturing cost.
Title: Nature of chemical elements
Henadzi Filipenka | Independent researcher
Abstract:
The main problem is that using X-ray to determine the crystal lattices of different materials, and
why they are such and not others is not yet known. For example, copper crystallizes in the fcc
lattice, and iron in the bcc, which upon heating becomes fcc and this transition is used in the heat
treatment of steels.
The literature cites many factors affecting the crystallization of atoms, so I decided to remove
them as much as possible, and the metal model in the article, let’s say, ideal, i.e. all atoms are the
same (pure metal) without inclusions, without implants, without defects, etc., using the Hall effect
and other data on the properties of the elements, as well as Ashcroft and Mermin's calculations -
the main determining factor for the type of lattice was the external electrons of the atom’s core or
ion that turned into as a result of the transfer of part of the electrons of the atom to the conduction
band of the crystal.
It turned out that the metal bond is caused not only by the socialization of electrons, but also by
the external electrons of the atomic cores, which determine directivity or type of crystal lattice.
A change in the type of metal lattice can be associated with the transition of an electron into the
conduction band or its return from this band.
Title: Graphene Coatings: A Disruptive Approach to Durable Corrosion
Resistance
Raman Singh | Monash University, Australia
Abstract:
Corrosion and its mitigation costs dearly (any developed economy loses 3-4% of GDP due to corrosion, which
translates to ~$250b to annual loss USA). In spite of traditional approaches of corrosion mitigation (e.g., use of
corrosion resistance alloys such as stainless steels and coatings), loss of infrastructure due to corrosion continues
to be a vexing problem. So, it is technologically as well as commercially attractive to explore disruptive
approaches for durable corrosion resistance.
Graphene has triggered unprecedented research excitement for its exceptional characteristics. The most relevant
properties of graphene as corrosion resistance barrier are its remarkable chemical inertness and impermeability
and toughness, i.e., the requirements of an ideal surface barrier coating for corrosion resistance. However, the
extent of corrosion resistance has been found to vary considerably in different studies. The author’s group has
demonstrated an ultra-thin graphene coating to improve corrosion resistance of copper by two orders of
magnitude in an aggressive chloride solution (similar to sea-water). In contrast, other reports suggest the graphene
coating to actually enhance corrosion rate of copper, particularly during extended exposures. Authors group has
investigated the reasons for such contrast in corrosion resistance due to graphene coating as reported by different
researchers. On the basis of the findings, author’s group has succeeded in demonstration of durable corrosion
resistance as result of development of suitable graphene coating. The presentation will also assess the challenges
in developing corrosion resistant graphene coating on most common engineering alloys, such as mild steel, and
presents results demonstrating circumvention of these challenges.
Title: Large scale platforms for energy photoelectrocatalysis at Silicon-
based nanomaterials
Ahmed Farid Halima | RMIT University, Australia
Abstract:
Realizing a green economy envisages solar-to-fuel (STF) conversion as the promising pathway for
reliable energy storage and utilization. To facilitate this, efficient catalysts are optimized for
nanostructured semiconductors towards highly performing devices. Silicon is regarded an
advantageous photoelectrode support for a range of fuel reactions, provided enhancement to its
chemical stability. One challenge prevails for nanostructured Silicon-based devices; to identify
scalable and reliable chemical fabrication methods, especially for noble or earth-abundant metal
catalysts (such as Pt, Pd, Au, Ag, Cu) for respective/simultaneous photocatalysis of Hydrogen or
Carbon Dioxide. The work presented herein demonstrates detailed investigations for cost-effective,
reliable and scalable nanofabrication processes, and display device functionality/efficiency
characterization in STF conversion.
Title: Circular Materials for a Circular Economy
Maryam Naebe | Deakin University, Australia
Abstract:
Materials designed for multiple life cycles are required for a circular economy. With constant
novelty and evolution in material science and engineering, no longer we can keep adding
functionality via tailored complexity for a single life. Superior fit-for-purpose materials must retain
maximal value through all their subsequent applications. Much effort has been expended on how
to best recycle, reuse and re-purpose our existing materials. This talk will focus on finding more
sustainable solutions to build multiple life functionality into new materials. While the focus is on
designing out textiles waste, a several case studies will be discussed to show case the creating
novel ways to maximise value from waste.
Title: Shape-memory Polymers for Biomedical Applications
Mitsuhiro Ebara | National Institute for Materials Science (NIMS), Japan
Abstract:
Shape-memory polymers (SMPs), which have the ability to return from a deformed state to their
original shape after receiving an external stimulus, have drawn much attention during
fundamental research into practical applications. We have been developing a thermally induced
SMPs switch with a Tm at a biologically relevant temperature using cross- -
caprolactone) (PCL). PCL is an important biocompatible and biodegradable synthetic polymer
and has been approved for biomedical applications by the US Food and Drug Administration
(FDA). In recent years, our laboratory developed SMPs that respond not only to heat but also
light and magnetic field. We also succeeded in providing shape memory properties with
applications such as nanofiber meshes, nanoparticles and 3-dimentional scaffold materials.
Title: Global trends in nanofiber innovations and growing business
opportunities
Muzamil Khatri | Shinshu University, Japan
Abstract:
Nanomaterials are getting great deal of interest in nanotechnology, specifically nanofibers among
all such materials has emerged with greater impact in recent technological development, because
of its multifunctional properties such as lighter weight, finer diameter and breathability. In
general, the talk will give audience insight into the Nanofibers as a new problem-solving entrant
into current era that include biosensors, tissue engineering, drug delivery, nerve regenerations and
other environmental and medical applications. A broader perspective will be discussed about
Nanofiber production and challenges. Recently, utilization of nanofibers has been considered for
various practical applications which created business opportunities worldwide. Our recent journey
to development of innovative different nanofiber-based products and transforming into viable
commercial products will be presented. We have started nanofiber production for business in
Pakistan and Japan.
Title: Artificial blood vessel scaffolds of biodegradable co-polyester
nanofibers for cardiovascular regeneration
Sofia El-Ghazali | Shinshu University, Japan
Abstract:
The isosorbide bio-based polyesters Poly (1,4-Cyclohexane Dimethylene Isosorbide
Terephthalate) (PICT) and Poly (Ethylene Glycol 1,4-Cyclohexane Dimethylene Isosorbide
Terephthalate) (PEICT) are being widely investigated with a view to exploring more functional
and biomedical applications. However, nanofibers made of PICT/PEICT blend (BLEND) have
not been manufactured yet. Herein, we report three-dimensional (3D) artificial blood vessels
(ABV) using PICT, PEICT and BLEND nanofibers with three different cross-sectional diameters
≤2 mm which remain a big challenge. Scanning Electron Microscopy (SEM) showed smooth
morphology of the ABVs and Atomic Force Microscopy (AFM) clearly showed compacted
nanofibers on the surface of BLEND which has more potential to hold the human breast cell
compared to PICT and PEICT. Fourier Transform Infra-Red spectrum (FTIR) showed that no
significant difference was found between PEICT and the BLEND chemical structure. Enzymatic
degradation showed the higher degradation rate of BLEND compared to PICT and PEICT. The
ABV of the BLEND has a capability to adopt the tensile properties of both PICT (stress) and
PEICT (strain) and it showed intermediate tensile strength. The results demonstrated that the
human breast cell can be cultured successfully on the BLEND.
Title: Viscoelastic properties of Chalcomenite glasses
Haihui Ruan | The Hong Kong Polytechnic University, Hong Kong
Abstract:
Chalcogenide glass (ChG) is an alternative material to replace single‐crystal germanium in
manufacturing thermal imaging lenses owing to the excellent formability through precision glass
molding (PGM). The deformation mechanisms of these glasses at the molding temperature
involve elasticity, plasticity, and viscous flow, which call for a new theoretical model to assist the
design of PGM process. Through a comparative study by using the impulse excitation technique,
we discuss the fundamental difference between oxide and chalcogenide glasses in terms of their
viscoelastic response. For PGM, we characterize the thermo‐mechanical properties of
Ge22Se58As20 at the temperature above its softening point and establishes a new
elastic‐viscoplasticity model to describe its thermo‐mechanical behaviors, which are
parameterized based on cylindrical compression tests. The new constitutive model is then
implemented in finite element simulation of PGM, and the agreement of displacement‐time
curves between experimental and simulation results exhibits the validity of the proposed model.
Title: Giant shift upon strain on the fluorescence spectrum of VNNB color
centers in h-BN
Song Li | City University of Hong Kong, Hong Kong
Abstract:
We study the effect of strain on the physical properties of the nitrogen antisite-vacancy pair in
hexagonal boron nitride (h-BN), a color center that may be employed as a quantum bit in a two-
dimensional material. With group theory and ab-initio analysis we show that strong electron-
phonon coupling plays a key role in the optical activation of this color center. We find a giant shift
on the zero-phonon-line (ZPL) emission of the nitrogen antisite-vacancy pair defect upon applying
strain that is typical of h-BN samples. Our results provide a plausible explanation for the
experimental observation of quantum emitters with similar optical properties but widely scattered
ZPL wavelengths and the experimentally observed dependence of the ZPL on the strain.
(a) The geometry of VNNB defect in the ground state. Top view (left) and side view (right). The
dashed circle denotes the impurity nitrogen atom. The defect is outof-plane and exhibits C1h
symmetry. (b) The a1, b2 and b0 2 defect states in C2v geometry. (c) The defect states in the C1h
symmetry with the same energy order as those in (b). As can be seen the a1 and b2 wavefunctions
in C2v symmetry are mixed in C1h symmetry.
Title: Inventive Pressure-Mediated Electrophoretic Deposition of
Antibiotic-Laden Polymer Nanocomposite Films for Surface Modification of
Titanium Implants
Mojtaba Mansoorianfar | Nanjing Forestry University, China
Abstract:
We present, for the first time, a novel procedure based on electrophoretic (EPD) under isostatic
pressure to control the deposition rate of multicomponent thin films. A uniform composite thin
film (thickness ~ 100 nm) could be deposited on a Ti-based substrate under low pressure of 10-2
mbar (LP), atmospheric pressure (AP), and high pressure of 5 bar (HP). Surprisingly, results
showed that increasing pressure on the suspension during electrophoretic (PM-EPD) had
increasing effect on the current density within time evolution. The results of TGA showed that at
AP larger amounts of CNF and alginate were deposited on the surface compared to LP or HP.
However, highly amount of BG could be deposited at LP. Moreover, FTIR, and SEM
characterizations proved that the deposition rate of film increases at AP; it enhances the coating
thickening. While the amount of released drug from the surface of samples synthesized in HP was
higher than AP and LP. As a result applying vacuum eliminated nanobubbles inside the
composite and decreased the amount of loaded drug. By altering the pressure to vacuum, pH
decreased to near 8 which decreased OH- ion concentration, zeta potential of suspension, and
deposition rate of coating. While rising pressure traps nanobubbles inside the composite, increase
resistance of layer and prevent thickening of coating. These bubble-like holes play as drug
storage. In vitro bioactivity assessment using MTT assay and 3-days drug releasing from the
composite films exhibited enhancement in biocompatibility, viability and promotion in drug
releasing by increasing pressure.
Title: Semiconducting Polymers for High-Performance Field-Effect
Transistors
Yunqi Liu | Chinese Academy of Sciences, China
Abstract:
During the past several years, impressive progresses have been made in organic field-effect
transistors (OFETs), particularly in conjugated polymer-based FETs. A few high-performance
polymers-based FETs have been developed with a remarkable mobility of more than 10 cm2 V
−1
s−1
, which provides a promising opportunity for applications in flexible displays and wearable
devices.
In this presentation, several design ideas for high-performance semiconducting polymers are put
forward and discussed. Following these guidelines a few copolymers with D−A structures
exhibiting p-tpye, n-type and ambipolar behaviour were synthesized. Their transporting
properties in FETs were measured and studied.
Title: Distribution of Multimaterials with Nanoscale Resolution guided by
Microtopographic Substrate
Jia Zhang | Harbin Institute of Technology, China
Abstract:
Distribution of multi-materials at arbitrary positions with nanoscale precision and over large area
substrates is essential to future advances in functional graded materials. Such stringent
requirements are highly beyond the reach of current techniques although the newly developed 3D
printing technologies are addressed. Here, a radial gradient circle array film is fabricated by using
microtopographic substrate guided with the distribution accuracy up to ~18 nm. A mathematical
model is developed to guide the distribution of position, size, shape, type of materials on an
arbitrary section for the given morphology of substrate. The periodic electrical and mechanical
properties of the radial gradient circle film are identified, which will be benefit for further
functionalization and applications, such as gradient refractive index lens, microcoils, local
catalysts.
Abstract:
Energy conversion such as CO2 reduction to fuel and water splitting with solar energy needs
catalysts with high activity and good stability. Nanostructured materials are promising for future
application in this research area. Although there are a large number of related publications, the
issue about the catalysts has not been well addressed. So far, copper and copper oxide materials
have been widely used as the catalysts for electrochemical, photochemical and
photoelectronchemical CO2 reduction. Additionally, metal copper as a good conductive material
works well for electrode substrate. In order to take advantage of copper and copper oxide
materials, we have prepared nanostructured copper and copper oxides based materials for
photochemical, electrochemical and photoelectrochemical CO2 reduction to organic fuel.
Besides, copper nanowires have been used as the substrate to fabricate a highly efficient three-
dimensional (3D) bulk catalysts of core-shell structure, in which NiFe and CoFe layered double
hydroxide (LDH) nanosheets were grown on the substrate cores supported on Cu foams, toward
overall water splitting. The preliminary conclusion can be reached that after modification and
deposition, copper oxides are prospective for photochemical and photoelectrochemical CO2
reduction under solar light and the 3D core-shell electrocatalysts significantly advance the study
for large-scale practical water electrolysis.
Title: Copper and Copper Oxides Based Materials for Solar Energy
Conversion
Ying Yu | Central China Normal University, China
Title: Nanotribology of metals and alloys
Arnaud Caron | Korea University of Technology and Education, Republic of Korea
Abstract:
In this work we apply atomic force microscopy to investigate the response of single asperity
sliding contacts between AFM tips and metals and alloys. As involving at least two bodies the
friction response of a tribological system is complex and may include chemical, structural and
mechanical effects.
We find that sliding friction is both affected by chemical and structural effects. Chemical
contributions were tested by changing the metallurgical affinity between the involved metallic
couples. For non-affine metallurgical partners sliding friction is governed by simple shearing while
the sliding response of affine partners is governed by adhesion and local alloying. In contrast we
find that the sliding friction of an amorphous alloy is strongly affected by its structural relaxation
state. Further, metals and alloys wear in unlubricated condition closely relate to their plastic
deformation. We investigated the tribological response of different fcc metals and their alloys: Au,
Ag, Ni, Ag-Cu eutectic alloys and age hardening Al-Cu alloys. While wear and ploughing friction
coefficient of pure fcc metals scale with their hardness, we demonstrate how the tribology of
metallic alloys varies with their microstructural length scale. Further, investigating the tribological
response of single asperity contacts allows monitoring the mechanisms involved in friction and
wear.
Title: The Precise Determination of the Johnson-Cook Material and
Damage Model
Barış ÇETİN | Abdullah Gül University, Turkey
Abstract:
Al 7068-T651 alloy is one of the recently developed materials used mostly in the defense industry
due to its high strength, toughness and low weight compared steels. The aim of this study is to
identify the Johnson-Cook (J-C) material model parameters, the accurate Johnson-Cook (J-C)
damage parameters, D1, D2 and D3 of the Al 7068-T651 alloy for Finite Elemental Analysis
(FEA) based simulation techniques, together with other damage parameters, D4 and D5. In order
to determine D1, D2 and D3 tensile tests were conducted on notched and smooth specimens at
medium strain rate, 100 s-1, and tests were repeated 7 times to ensure the consistency of the results
both in the rolling direction and perpendicular to the rolling direction. To determine D4 and D5,
further tensile tests were conducted on specimens at high strain rate (102 s-1) and temperature
(300 °C) by means of Gleeble Thermal mechanical Physical Simulation system. The final areas of
fractured specimens were calculated through optical microscopy. The effects of stress triaxiality
factor, rolling direction, strain rate and temperature on the mechanical properties of Al 7068-T651
alloy were also investigated. Damage parameters were calculated via Levenberg-Marquardt
optimization method. From all the aforementioned experimental work, J-C material model
parameters were also determined. In this article, J-C damage model constants, based on maximum
and minimum equivalent strain values, were also reported which can be utilized for the simulation
of different applications.
Title: Physico-chemical Effects of Gelatin Addition in
Carboxymethylcellulose and Calcium Phosphate Cement-based
Nanocomposites
Esra Guben | Boğaziçi University, Turkey
Abstract:
In this study, a nanocomposite was obtained with carboxymethylcellulose (CMC) and gelatin (GEL) as the liquid
phase and CaP-based powder as the solid phase. The effect of addition of 0, 5, 10, 20 wt% of GEL was investigated
on the physical properties of the nanocomposites. Physico-chemical characteristics were determined by using
Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and mechanical tests.
Besides, the swelling analysis was performed after 1, 8, 16, 24 and 48 hours and the degradation of samples was
studied after 7 and 14 days. According to FTIR results, physical interaction between CMC and GEL with H
bonding was observed from the peak at 3288cm-1. GEL structure was disrupted and this may cause an increase in
the interaction between CMC and GEL molecules which was observed from the band at 1600-1400 cm-1. After
mixing of the phases, there is a dissolution-precipitation mechanism for CaP and it starts with the interaction
between COO- groups on CMC and Ca2+ molecules from CaP. Ca2+ molecules create attraction sites for PO43-
molecules. As a result, ions accumulate as hydroxyapatite-like structures. A homogenous and porous
microstructure was observed by using SEM. Mechanical tests showed that GEL improved the strength of the
samples up to 20 wt%. The addition of 20 wt% of GEL decreased the mechanical properties. Maximum
compressive strength values were found up to approximately 6 MPa. The swelling capacity decreased with GEL
addition and 10wt% GEL samples had the lowest swelling which was approximately 28%. Lastly, the highest
degradation rate was found in 10wt% GEL samples and further GEL addition reduced the degradation rate.
However, at the end of 14 days, nanocomposites with GEL had a higher degradation rate than the control group. In
conclusion, GEL addition in the nanocomposites enhances the physical properties for potential biomedical
applications.
Title: Characterization of sodium caseinate/Hydroxypropyl methylcellulose
concentrated emulsions: Effect of mixing ratio, concentration and wax
addition
Kooshan Nayebzadeh | Shahid Beheshti University of Medical Sciences
Abstract:
The effects of mixing ratio (1:1, 2:1 and 4:1 sodium caseinate:hydroxypropyl methylcellulose,
CN:HPMC), HPMC concentration (0, 0.6 and 1.2 wt%), CN concentration (0, 1.25 and 2.5) and
beeswax addition (3%) on the physical stability of concentrated O/W emulsions (φoil = 0.6) were
investigated. The emulsion stability, particle size distribution, microstructure and rheological
properties were measured. The results showed that emulsion stability was significantly improved
with increasing HPMC concentration (pvalue < 0.05). The samples with the highest and the
lowest biopolymers concentration at mixing ratio of 2:1 had the highest and the lowest ESI (98%
and 48%), respectively. In addition, the most stable sample had the smallest volume mean
diameter and approximately desirable rheological properties. The beeswax addition considerably
improved rheological properties whereas increased droplets diameter and emulsion instability. In
summary, concentrated emulsions stabilized by caseinate/Hydroxypropyl methylcellulose
complex may be useful for application in particular food such as heavy cream, mayonnaise,
oleogels and pharmaceutical products.
Title: Highly efficient removal of Rhodamine B by MIL-100(Fe)
@Fe3O4@AC
Asma Hamedi | Yazd University
Abstract:
A new magnetic nanocomposite called MIL-100(Fe) @Fe3O4@AC was synthesized by the
hydrothermal method as a stable adsorbent for the removal of Rhodamine B (RhB) dye from
aqueous medium. The size of these nanocomposite is about 30–50 nm. Compared with activated
charcoal (AC) and magnetic activated charcoal (Fe3O4@AC) nanoparticles, the surface area of
MIL-100(Fe) @Fe3O4@AC were eminently increased while the magnetic property of this
adsorbent was decreased. The surface area of AC, Fe3O4@AC, and MIL-100(Fe) @Fe3O4@AC
was 121, 351, and 620 m2/g, respectively. The magnetic and thermal property, chemical structure,
and morphology of the MIL-100(Fe) @Fe3O4@AC were considered by vibrating sample
magnetometer (VSM), thermogravimetric analysis (TGA), zeta potential, X-ray di_raction (XRD),
Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), Brunner-
Emmet-Teller (BET), and transmission electron microscopy (TEM) analyses. The relatively high
adsorption capacity was obtained at about 769.23 mg/g compared to other adsorbents to eliminate
RhB dye from the aqueous solution within 40 min. Studies of adsorption kinetics and isotherms
showed that RhB adsorption conformed the Langmuir isotherm model and the pseudo second-
order kinetic model. Thermodynamic amounts depicted that the RhB adsorption was spontaneous
and exothermic process. In addition, the obtained nanocomposite exhibited good reusability after
several cycles. All experimental results showed that MIL-100(Fe) @Fe3O4@AC could be a
prospective sorbent for the treatment of dye wastewater.
Title: Polymeric sustained release formulations containing bevacizumab
intended for choroidal neovascularization
Reyhaneh Varshochian| Shahid Beheshti University of Medical Sciences
Abstract:
Distinctive features of polymers including Non-toxicity, biocompatibility and diversity in
physicochemical properties confer them favorable potentials as carriers in ocular drug deliveries.
In posterior segment drug therapies, the short half-life and repeated intra-ocular injections which
commonly cause minor to sever adverse effects are still among the serious issues. To address this
problem, we developed various sustained release formulations containing bevacizumab aimed at
choroidal neovascularization (CNV) treatment. Nanoparticles, implant and in situ forming gel were
designed and evaluated in vitro and in vivo. Vitreous samples were collected following the
intravitreal injections in rabbits, the drug concentration was assayed by VEGF coated ELISA and
intraocular pharmacokinetic parameters were calculated. Fluorescent dye loaded systems were
used to investigate the persistence of the formulations in the posterior segment. Due to the in vitro
results sustained profiles of release with different slops were observed in various formulations
which amongst nanoparticles embedded in the in situ gel showed the most long-acting release
during the test span. In vivo results indicated an elevated vitreous mean residence time (MRT) and
decreased vitreous clearance. In conclusion, the prepared polymeric structures provided sustained
release bevacizumab delivery formulations which can introduce a promising ocular drug deliveries
intended for posterior segment treatments.
Title: Gravity Puzzle, Akin Faith Trouble
Housam Safadi | Safadi Bureu, Damascus
Abstract:
Physicists ,in this study, maight find some answers to gravity puzzles out of equations and
accelerators; it is of great low-cost! In my book “How the Abrahamic Books Embed M-theory and
Black Holes “,I demonstrate “Heavens” branes’ of M-theory, and Black Hole analogous The
Books’ Hell. In this study , I am trying to marry “Gravity” with The Books’ angels. Blessing this
marriage, I should examine their compatibility.
Gravity and angels share these properties:
1- Being messengers
2- Carry energy and oscillate
3- Exhibit Motion
4- Supergravity
5- Black hole gravity
6- Water Gravity
Title: Structure and Thermal properties of Ga2Se3 Nanoparticles
Mustafa Saeed Omar | University of Salahaddin-Erbil
Abstract:
The formula which contains the maximum increase of mean bond length dmean, melting entropy Sm and critical
particles radius rc is used to calculate lattice volume in nanoscale size crystals of Ga2Se3 from group compounds
III2VI3. rc is calculated from the values of the first surface atomic layer height symboled by h. The surface first
layer height of atoms h is calculated according to the fitting relation, h=1.429 dmean for bulk state. For Ga2Se3
values of h and melting entropy Sm are 0.336nm 30.179(Jg-atom-1K-1) respectively. The size dependent mean
bond length can be calculated using the relation [dmean(r)=h-∆ d(r)], the size dependent lattice parameter a(r) can
be calculated from the relation dmean(r)=[a(r)/4].31/2, and then the size dependent lattice volume V(r). The bulk
state for this relation as (r go to infinity) is used to calculate values of dmean(r). The increase of lattice size reaches
to about three times of its bulk state when r reaches rc, for Ga2Se3 its value reaches to 77.6 A3 compared to that of
the bulk (19.97 A3). From the values of V(r) calculated according to the information above, and by using the
modified model (Omar 2016) the nanoscale size dependence of melting temperature Tm(r) are calculated. The
melting temperature decreases with the nanoparticles size reduction and become zero when its radius reaches to its
critical value (rc)
Bulk melting temperature for Ga2Se3 for example, have values of 1293 K. From the size dependent melting
temperature T(r) and mean bond length dmean(r) , the size dependent lattice thermal expansion LTE(r) are
calculated according to the modified relation reported by (Omar 2016). Lattice thermal expansion “LTE” decreases
with the decrease of nanoparticles size and reaches to a minimum value as r approaches down to about 5nm, see
figure 1 for Ga2Se3
Title: Determination of the strength of dislocations` obstacles in planar impact
experiments
Eugene Zaretsky | Ben Gurion University of the Negev
Abstract:
Planar impact loading generates in solids two waves, the plastic wave and the elastic wave. Since
the propagation velocity of the latter is higher it moves through an unperturbed material interacting
in passing with material’s defects. As result, the shear
decays with propagation distance h
passage of an obstacle by dislocation - the decay is fast, the dislocation glide is the over-barrier
glide and only phonon viscous drag opposes the dislocations’ motion. As soon as decaying stress
el - the rate of the decay decreases drastically; due to the insufficiency of
the stress the dislocation should wait in front of the obstacle for the appearance of a proper thermal
el(h) has a distinct
-obstacle interaction.
Based on this approach the strengthening effects of NiAl precipitates produced in PH 13-8 Mo
stainless steel after quenching and ageing of different durations were established. Moreover, the
cutting the precipitates by moving dislocations, were found to be in an excellent agreement with
transmission electron microscopy observations.
Title: Nitrate Removal from Drinking Water by Sodium Thiosulfate and its
impact on health
Adel abdelhalim alsalaymeh | Water Quality Laboratory, Hebron Municipality
Abstract:
Introduction: Nitrate is a stable and highly soluble ion with a low potential for precipitation or adsorption, nitrate is seldom
present in geological formations and therefore contamination due to nitrate is mainly attributed to anthropogenic sources.
Pollution of water resources by nitrate occurs due to many reasons, which has effects on environment and human health so
nitrate removal from drinking water is necessary.
Methodology: 1.09% solution of sodium thiosulfate was prepared by dissolving pills (taken from Hach vials) in 100 ml of
deionized water. Different doses of sodium thiosulfate solution (0.1, 0.3, 0.5,1,2,3, and 5ml) were added to 100 ml of water to
be treated to determine the lowest dose that give high percentage of nitrate removal. The lowest contact time was determined
by adding the lowest dose that gives high percentage of nitrate removal. Nitrate level was determined by cadmium reduction
method (Hach method no. 8039) using nitraVer 5 high range powder pillow nitrate reagent. The effect of adding sodium
thiosulfate on the level of TDS, alkalinity, sulphate and total hardness was studied after one-hour contact time. TDS was
determined by Hach CO 150 conductivity meter. Alkalinity was determined by Hach method no. 8203(phenolphthalein and
total method). Sulfate was determined by Hach method no. 8051. Total hardness was determined by Hach test kit 20-400mg/l
Model 5-EPMG-L Cat. No.1454-01. Literature was reviewed to determine the effect of sodium thiosulfate on human health.
Results: There is decrease in the level of nitrate and increase in the level of electrical conductivity and total dissolved
substances by increasing the dose of 1.09% solution of sodium thiosulfate. 72% reduction in nitrate level was noticed when
1ml of 1.09% solution of sodium thiosulfate More than two third of nitrate level (69%) was removed after 30 minutes of
contact time between sodium thiosulfate and raw water.
Conclusions: Removal of nitrate from drinking water by adding 1.09 % of sodium thiosulfate is easy and cost effective
method and removes high percentage of nitrate.
Further research is needed to confirm that addition of sodium thiosulfate to drinking water is safe process.
Title: Temperature Dependent Interplay between Emitting Species in
Highly Ordered Poly(thiophenes) as Revealed by Optical Spectroscopy
John Onyango Agumba | Jaramogi Oginga Odinga University of Science and Technology
Abstract:
In this study, the temperature dependent PL spectra measurement has provided us a feasible means to elucidate
the nature of the emissive species and the melt transitions in different polythiophenes. The effects of thermal
fluctuation on different phases of a bulky substituted poly (3-(2, 5-dioctylphenyl) thiophene) (PDOPT) and Poly(3
hexylthiopne-2 5diyl) (P3HT) have been systematically investigated using photoluminescence spectroscopy. This
has been achieved by performing in-situ temperature dependent photoluminescence measurements followed by
detailed spectral analysis. For PDOPT, the intensities of the emitted species varied as a function of temperature
that determine degrees of order. Well-ordered crystals emitted strongly in lower energies as opposed to less
ordered films and spherulitic crystals. From the deconvoluted PL spectra, it was revealed that, the emitting
energy bands remained constant with shift of intensity with ordered crystals emitting strongly in higher
wavelengths as compared to their disordered counterparts that emit strongly in lower wavelengths. On the other
hand, for P3HT, the spectrally resolved PL lineshapes through multipeak Gaussian functions simulating 0-0, 0-1,
0-n peaks have revealed multiple vibrational replicas yielding different emitting species (states). We suggest that
the temperature dependent vibronic progressions arise from different electronic origins i.e. different species
(fluorophores) due to multiple crystalline polymorphs within the crystal with varied coupling of the excited states.
From our observation, we conclude that it is not sufficient to invoke only the intramolecular interactions in
explaining the nature of PL spectra of highly ordered polythiophenes which are widely dominated by both
interchain and intrachain interactions.
Title: Removal of soluble carboxylic acids in transformer insulating
fluids using membrane separation
Oumert Safiddine Leila| The University of Blida
Abstract:
From an environmental perspective, petroleum-based aged oils removed from power transformers are source of
several pollutants and therefore cannot be disposed of without due care. The degradation of oil in in-service
transformers is due to various factors concurrent with the operation of the units over several years. Oxidation of
oil insulation initiate premature aging and introduces carboxylic acids with eventual increase in oil acidity, which
hampers the properties of the oil. In this paper, a membrane separation technology-based purification process for
aged insulation oil has been evaluated and reported. The intent of the present study is to eliminate carboxylic
acids, dissolved decay contents and other colloidal contamination present in aged oil and enhance the useful life
of oil. The potential of the membrane treatment process has been demonstrated using Ultraviolet Visible Infrared
Spectroscopy and Fourier Transform Infrared Spectroscopy diagnostic measurements for oil and membrane.
Additionally, membrane retention properties like membrane flux, retention coefficient, sorption time and
membrane mass have been analyzed to understand the treatment process. To further evaluate the performance of
the membrane and effectiveness of the treatment process, acidity measurement of the oil before and after filtration
have been also reported. The proposed membrane purification method has been tested for Algerian utility in-
service oil samples. It is inferred that, membrane filtration method is a simple and effective method for treatment
of aged oils and aids in extending the remnant life of the oil. The procedure is economically attractive because of
increasing prices for transformer liquids, cost effective and environmentally sounds.
Abstract:
Quest for new materials with higher thermoelectric figure of merit is on the rise due to global
demand for green and renewable energy sources. This is a gradual deviation from the
conventional fossil energy sources. Energy problem across the globe is dynamic and it varies
from one clime to another. In addressing the quantum demand for these new materials,
experimentalist are limited to certain domain of materials classes like chalcogenides,
skutterudites, and Zintl phases in their search for newer materials. Computational data from
theorist usually guide the chemistry of experimentalist in their search and synthesis of new
materials. However, Ab initio computation of thermoelectric properties remains herculean and
computational intensive. We present a machine learning experimental design model to predict
thermoelectric figure of merit, ZT from chemical formula. Datasets from citrine and materials
project were obtained using APIs, The model prediction of figure of merit were comparable with
experimental results. Maximum likelihood of improvement criteria was used with normal
distribution to demonstrate highest likelihood of improvement. The expected thermoelectric
figure of merit for AgCrSe2 and Tl0.01Pb0.99Te are below the highest value in our dataset, hence
they are biased towards materials with high model uncertainty. New experiments are proposed for
five materials based on combination of exploring high-uncertainty candidates and Maximum
likelihood of improvement over parameter space.
Title: Model based Machine Learning Experimental Design to Predict
Thermoelectric Figure of Merit
Akinola S. Olayinka | Edo University Iyamho
http://materialsscience.peersalleyconferences.com/
Sponsors | Media Partners
A right choice of conference destination is an important aspect of any international conference and keeping that in consideration, Euro Materials Science 2020 is scheduled in the Beautiful city ‘’Paris’’.
NETWORKING...CONFERENCING...FOSTERING
ATTENDING A CONFERENCE ISN’T ALL ABOUT LEARNING AND NETWORKING
A NEW PLACE , PEOPLE AND CULTUREDISCOVERING
Avenue des Champs Élysées
Arc de Triomphe
Musical Concerts at Sainte Chapelle
Palais Garnier, Opéra National de Paris
Bustling Boulevards and Legendary Cafés
Eiffel Tower
Musée d’Orsay
Place de la Concorde
Cathédrale Notre Dame de
Luxembourg Gardens
Musée du Louvre
Seine River Cruises
Jessica CatherineProgram Director | Euro Materials Science 2020
Peers Alley Media
1126 59 Ave East, V5X 1Y9Vancouver BC, Canada
Contact us: [email protected] Ph : +1-778-766-2134
http://materialsscience.peersalleyconferences.com/
Contact Us
Connect with us
Mercure Paris Charles De GaulleAirport & ConventionBP 20248 -Roissypôle Ouest -Route de la commune -95713 Roissy CDG CedexVenue