DLSU SOLID STATE PHYSICS LAB

DLSU Solid State Physics Research Laboratory

Dr. Gil Nonato C. Santos

Fabrication and Characterization of Nanomaterials for

Nanotechnology Applications

How to do Nanomaterials

creatively?

“INNERSPACE”- Dennis Quaid

“Honey I Shrunk the Kids” – Rick Moranis

Our Recipe: Semiconducting Oxide Powder

We want to produce Semiconducting Oxide Nanomaterials!

Dr. Z.L. Wang (UAPT PI)Material Science & EngineeringGeorgia Institute of Technology

Our Technique: HVPG • Horizontal Vapor Phase Growth Technique

MOTIVATION• Grow high purity materials • Source material is powder of any form• Greater quantity with less source

material• No gas molecules in between• Versatility in composition of deposit • Produces unusual microstructures• Eliminate pollutants

What will I do with the heater?

Let’s Cook: Our Recipe and Ingredients

• A small amount of Semiconducting Oxide powder was loaded in a close-end quartz tube

• Was attached to the High Vacuum System for sealing at 10-6 Torr

• Let’s Bake!• The sealed quartz tube

was placed in a tube furnace set with the desired growth temperature

900ºC 700ºC 400ºC

• Temperature and Deposition Time Dependence of the Geometrical Properties of Tin Oxide Nanostructures

• Gil Nonato C. Santos, Arnel A. Salvador, Reuben V. Quiroga

International Journal of Scientific & Engineering Research Volume 2, Issue 10, October-2011 ISSN 2229-5518

Synthesized SnO2 Nanomaterial via the HVPG

Bed of Nanowires

Noodle Nanowires (Oishi)Bon Jovi’s other version of

Bed of Roses

Nanobelts

• Nanobelts are have a well-defined geometrical shape and side surfaces.

• Typical widths is in the range of 50 to 300 nm • Thicknesses are 10 to 30 nm.

Physics Society of the Philippines (Samahang Pisika ng Pilipinas)

• The Nanobelts were featured in the first Physics Journal in the Philippines

Different growth temperature produced remarkable structures

Nanobolo (Machete) (2nd Prize –photo micrograph contest

Do you like vegetables?

Nanocauliflower

SnO2 Nanomaterial on Si Substrate

• Silicon is an effective substrate for SnO2 nanomaterial. • Nanorods and nanobelts are grown without nanoparticles.

Finalist – DOST MS Thesis - Physics

Best Paper and Oral Presentation Award - MICROSPHIL

Nanobelt for gas flow sensors

Dr. Z.L. Wang (UAPT PI)Material Science & EngineeringGeorgia Institute of Technology

Two-probe measurements of electric conductance of Nanobelts under ambient temperature

The electric conductance of the nanobelt depends on the type and amount of molecules adsorbed on its

surface

High Resolution SEM image of the SnO2 Nanomaterial • The surface of the

SnO2 nanomaterial is porose and composed of many uniform crystalline grains.

• It suggests that this nanomaterial is suitable for fabricating gas sensors because of the porosity over large surface.

Photoluminescence of SnO2 Nanomaterials

• SnO2 Nanomaterial was excited with a UV lamp

• The luminescence was a blue visible light emission.

2009 International Sustainable World Energy, Engineering, and Environment Project (I-SWEEEP) Olympiad in Houston, Texas

Simon Anthony Lorenzo and Hannah Carize Sangalang won a silver medal for the Philippines with their project entitled “Development of Carbon Nanomaterial as an Electrode Voltage Source” in the Senior Engineering category

Carissa May Enriquez and Kevin Bryan Jose received an Honorable Mention award for their project “Development of an Organic Battery Using P-Toluene Polypyrrole as a Potential Electrode Voltage Source and Coconut (Cocos nucifera) Vinegar as Electrolyte

A – conducting polymerB – SnO2 Nanomaterial on SiC – Glass E - PCB

ZnO Nanomaterials – A. Ladines

Presented at ICMAT 2009 Singapore3rd Place Photomicrography – Microsphil

Finalist- DOST MS Thesis – Materials Science

CdO Nanomaterials – L. Tan

Carbon nanowires, rods, and tubes – J. Feraer

3rd Best Paper and Oral Presentation - Microsphil

International Journal of Scientific & Engineering Research, Volume 3, Issue 2, February-2012 ISSN 2229-5518

Synthesis and Characterization of In2O3 NanomaterialsGwen B. Castillon, Gil Nonato C. Santos

ZnS Nanowindmill and Nanorods – K. Suycano

Synthesis of -Fe2O3 Nanomaterials on Silicon SubstrateUsing Horizontal Vapor Phase Growth Technique • Lim, T. de los Reyes, R., D.,

Castillon, G., Ladines, A.Santos, G. N. C., Quiroga, R. V.DLSU Solid State Physics Research Laboratory

Fabrication of GalliumNitride Nanomaterials Grown by Horizontal Unseeded Vapor Phase Growth Technique • Anciado, R. R., Alcantara, N., Castillon, G.,

Ladines, A., de los Reyes, R.Santos, G. N. C., Quiroga, R. V.DLSU Solid State Physics Department

Synthesis and Characterization of TiO2 Nanomaterials on Silicon Substrate by Modified HorizontalVapor Phase Growth Technique

• Abrasaldo, P. M. B., (BPI DOST AWARDEE) Castillon, G., Ladines, A., de los Reyes, R. Santos, G. N. C., Quiroga, R. V.

Synthesis and Photoluminescence of Gold NanostructuresUsing Horizontal Vapor Phase Growth Technique • Kahn, D., Ladines, A., Castillon, G., de los Reyes, R., Santos, G. N. C., Quiroga, R. V.

Preliminary THz-TDS Measurements of Polypyrrole with Varying M of Na (p-TS) Composite Nanomaterial

Mazano, C., Manzano, R., Santos, G. N. C., Quiroga, R.

DLSU Solid State Physics Laboratory

Takage, Que, C., Furuya, T., Yamamoto, K., Tani, M.

Research Center for Development

of Far-Infrared Region, University of Fukui

The Effect of Growth Temperature, Dwell Time, and Orientation of the Thermal Gradient to the Gravitational Field in the Synthesis of CdS Nanomaterials using the Vapor Phase Crystal Growth Technique

Eduardo B. Tibayan Jr., Gil Nonato C. Santos, Reuben V. Quiroga

Finalist- DOST MS Thesis – Physics

International Journal of Scientific & Engineering ResearchVolume 2, Issue 10, October-2011 ISSN 2229-5518

Synthesis and Characterization of Superconducting Magnesium Diboride MgB2 Nanomaterials through Horizontal Vapor Phase Crystal Growth Technique

Renante C. Embalzado, Gil Nonato C. Santos, Reuben V. Quiroga

UP NIP CMPL Lab

International Journal of Scientific & Engineering Research, Volume 3, Issue 2, February-2012 ISSN 2229-5518

Characterization of Silver Nanomaterials, Synthesized by the Horizontal Vapor Phase Crystal Growth Technique for Antimicrobial PurposesWilfred Espulgar, Gil Nonato C. Santos

International Journal of Scientific & Engineering Research Volume 2, Issue 8,

August-2011 1 ISSN 2229-5518

Synthesis and Characterization of C-Ag Composite Nanomaterial for Battery Electrode ApplicationRuby Michelle N. Buot, Gil Nonato C. SantosInternational Journal of Scientific & Engineering Research Volume 3, Issue 2, February-2012 ISSN 2229-5518

• Cadmium Selenide Quantum Dots Synthesized by HVPC Growth Technique for Sensing Copper ion Concentrations

• Arra C. Quitaneg, Gil Nonato C. Santos

0 5 10 15 20Energy (keV)

0

2000

4000

6000

Counts

Se

Se

Au

Au

AuCd

Cd

Cd Au SeAuAu

SeAuAu

Elmt Spect. Element Atomic Type % % Se L ED 50.53 59.25 Cd L ED 49.47 40.75 Total 100.00 100.00

A B C

D E

Wavelength (nm)

PL Intensity (arb. Units)

Gold Medal – MS Thesis

International Journal of Scientific & Engineering Research Volume 2, Issue 12, December 2011 ISSN 2229-5518

• Fabrication and Characterization of Dye-Sensitized Solar Cell (DSSC) Using Nanostructured TiO2 as Photoelectrode

• Abel F. Ole, GIL NONATO C. SANTOS

• Fabrication and Characterization of Tin Oxide (SnO2) Nanomaterials as Carbon Dioxide (CO2) Gas Sensor

• FAITH CELESTE C. BANCOLO, GIL NONATO C. SANTOS

• Bi2S3 Nanowires Fabricated via Horizontal Vapor Phase Crystal (HVPC) Growth Technique for Photosensor Application

• BHEIM M. LLONA, GIL NONATO C. SANTOS

• Synthesis and Characterization of Iron Oxide Nanomaterials using Horizontal Vapor Phase Crystal (HVPC) Growth Technique for Glucose Sensing Application

• DONNA MARIE B. DE MESA, GIL NONATO C. SANTOS

CATALYTICPERFORMANCE OF AHYDROGEN FUEL CELL WITH PLATINUM NANOMATERIALS – COATED GAS DIFFUSION LAYERRICHARD C. MONSERRAT, Gil Nonato C. Santos

What we are doing right now• Characterize the other properties of Nanomaterials • Understand the growth behavior and characteristics of

Nanomaterials• Device Fabrication of Nanomaterials

• Environmental Nanomaterial Sensors (Challenge Grant Recipient)

• Solar Nanomaterials (AKI Project)• Bio Nanomaterials (Interdisciplinary Research –for

funding)• Nanocoatings (DOST PCIEERD)

Fabrication and Characterization of

SnO2 Nanomaterials for AntiHeat and Anti Microbial Applications

Francisco V. Moreno Jr., Gil Nonato Santos

Solid State Physics SEM/EDX Facility

Solid State Physics Thermal and Electrical Characterization Facility

Solid State Physics High Vacuum System and LN2 Facility

Solid State Physics High Temperature Furnace

and XRD Facility

Solid State Physics Fabrication Lab

Solid State Physics Optical Characterization Facility

THANK YOU VERY MUCH!!!