John Flake, Semiconductors / Electronic Materials
• Surface Functionalization of Silicon Nanowires, BOR-RCS $103k/3yrs
• Significance: Silicon nanowires are functionalized for biological interfaces, sensors, or for Li-ion battery applications.
• 3D Interconnects, ATMI Inc. $450k/3yr.• Significance: Develop novel
electrochemical approaches to forming deep through silicon vias.
• Other Areas of Research:• TiO2 photocatalysts,
photoelectrochemical reduction of CO3, Dept. of Energy EFERC
• Li-ion battery materials, DoD
Silicon nanowires, SEM
9 Die Stack with Through Silicon Vias
Francisco R. Hung, Molecular Modeling in Materials Design
Ionic Liquids in Nanoporous Carbons: when confined, how are the ionic liquids affected by the properties (pore
size, pore morphology, surface chemistry) of the carbons?
Significance: optimize design of (1) electrodes for electrochemical double layer capacitors (EDLCs) for hybrid vehicles; and (2) nanoporous semiconductors (e.g., TiO2) for dye-sensitized solar cells (DSSCs) for using solar energy (with John Flake)
Electric double-layer capacitor
Ion permeable separator
Current collector
Electrolyte ions
Simplified electric circuit
+ –
Cdl,+ Cdl,–
Porous carbon electrode
Dye-sensitized solar cell
Mediator
Electrolyte
Conducting glass
CathodePorous TiO2
+ dye
Organization of Carbon Nanotubes Using Liquid Crystals: investigate the use of liquid crystals (LCs) to manipulate and control the orientation of carbon nanotubes (CNTs)
Significance: high-quality dispersions of oriented CNTs in LCs have applications in displays, nanoscale electronics, optical sensors, and in the development of composites with unique mechanical, thermal and/or electronic properties.
(b)
Wall patterned arrays that might be used to align CNTs dispersed in a LC
Greg Griffin, Materials Processing
Aerosol synthesis methodsSignificance: (1) Aluminum nitride powder - thermal heat sink, ceramic armor; (2) Sol-gel / colloidal chemistry – mesoporous TiO2 - photocatalytic air, water purification.
Chemical vapor deposition / Atomic layer depositionSignificance: copper thin films – microelectronic circuitry (CVD)
palladium nanoparticles - heterogeneous catalysis (ALD)
Future plansNanostructured catalyst preparation
Significance: CO2 conversion; desulfurization; - photocatalytic decontamination
Microelectronic devicesMetallization circuitry; solar photovoltaic cells
Environmental nanotechnology - education proposal
Kerry Dooley, Catalytic Materials
Monolithic Materials for Oscillating Reactors (C. Knopf) Significance: Enhanced observed rates in catalysis of edible oil hydrogenation, oxidative desulfurization.
Mixed Rare Earth Oxides for Nanocombustion and Desulfurization (S. Acharya)Significance: Enhanced thrust for fighter aircraft; desulfurization and tar removal from coal and biogasifier effluents.
0 20 40 60 80 100 120 140 160
Al/Zeo
Mn/Al
Ce/La
Ce/La/Zr
Ce/La/Gd/Al
Ce/La/Tb/Al
Ce/La/Mn/Al
umol S/g
Adsorbed Desorbed, inert gas
Hydrodeoxygenation/ Decarboxylation of Fatty Acids and Rosin AcidsSignificance: Biorefining the acids fraction of pyrolysis liquids and tar extracts to higher value fuels, chemicals
Figure – Synthetic Evolution of Four Generations of High-Temperature (600ºC) Oxide Desulfurization Sorbents
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