Purdue University – Page 6 – TechConnect Briefs

TiN/GaN- Metal/Semiconductor Multilayers for Thermionic Energy Conversion Devices

Rawat V., Sands T.D., Purdue University, US

This work deals with investigation of metal/semiconductor nitrides for potential application as solid state thermionic energy converters. TiN/GaN multilayers were deposited on Sapphire and MgO substrate using reactive pulsed laser deposition. This is the first [...]

Interfacial Properties of Carbon Nanotube Arrays

Zalamea L., Pipes R.B., Purdue University, US

The present study springs from the investigation of Salvetat et al.4 wherein the ratio of flexural deformation to applied load of the carbon nanotube array was used to determine a reduced Young’s modulus and effective [...]

Atomistic Simulations in Nanostructures Composed of Tens of Millions of Atoms: Importance of long-range Strain Effects in Quantum Dots

Korkusinski M., Klimeck G., Xu H., Lee S., Goasguen S., Saied F., Purdue University, US

Realistic calculations of propertioes of nanostructures begin with the determination of equilibrium positions of constituent atoms. The nanoelectronic modeling tool NEMO-3D determines these positions by minimizing the total elastic energy. The displacements are further used [...]

Multi-scale Drug Release Modeling for Targeted Oral Drug Delivery (TODD)

Haddish B.N., Nyquist C., Haghighi K., Wu H.A., Corvalan C., Rickus J., Keshavarzian A., Purdue University, US

Conventional oral dosage forms deliver their active ingredient at rates that are high initially and decline afterward, showing a first order kinetics with the release determining step considered as the dissolution rate of the active [...]

Nanoparticulate Drug Delivery Systems Based on Hydrotropic Polymers, Dendrimers, and Polymer Complexes

Park J.H., Park K., Huh K.M., Lee S-C, Lee W-K, Lee S-C, Lee W-K, Ooya T., Park J.H., Park K., Purdue University, US

Novel nanoparticulate drug delivery systems have received increasing attention for delivery of poorly water-soluble drugs and proteins. We have developed a new type of polymer micelles bearing the hydrotropic core segment, e.g., poly(2-(4-vinylbenzyloxy)-N,N-diethylnicotinamide), that enables [...]

Computational Challenges in Nanoscale Device Modeling

Polizzi E., Sameh A., Sun H., Purdue University, US

The development of new simulation tools is critical for the exploration of quantum transport in nanoscale devices. Such simulation is commonly performed by solving self-consistently the transport problem using The Non-Equilibrium Green's Functions (NEGF) formalism [...]

Numerical Modeling of a Piezoelectric Micropump

Schlipf R., Haghighi K., Lange R., Purdue University, US

An effective description and an accurate understanding of any pumping mechanism is critical, especially of the micro scale. With the existence of a comprehensive and adaptable model, accurate preproduction predictions of performance are realized. Optimal [...]

DEP Particle Dynamics and the Steady Drag Assumption

Wereley S.T., Whitacre I., Bashir R., Li H.B., Purdue University, US

The interaction of fluid drag, dielectrophoretic forces, and Brownian motion on a nanoparticle's motion is studied using a microfluidic chip with interdigitated electrodes. The flow domain is a 12 micron deep by 150 micron wide [...]

Electrostatic Force Microscopy Study of Open-Circuit Photovoltage from a bR/ITO Heterostructure

Crittenden S., Hillebrecht J., Howell S., Birge R.R., Reifenberger R., Purdue University, US

Bioelectronics offers a potential alternative to Si-based technology because natural evolution and selection have optimized many biological molecules to perform tasks that can only be mimicked by complicated electronic circuits. Purple membrane (PM) patches containing [...]

Immunosensing Using Fabricated protein Microarrays

Howell S.W., Inerowicz H.D., Guirl L., Regnier F., Reifenberger R., Purdue University, US

Patterned microarrays of antibodies to specific bacteria were used to perform a series of bacterial immunoassays of E. Coli 0157:H7 and Renibacterium Salmoninarum (RS). Microarrays were fabricated using microcontact printing (MCP) and characterized using scanning [...]