Wang J. – Page 3 – TechConnect Briefs

Pt and Pt-Ru/Carbon Nanotube Nanocomposites Synthesized in Supercritical Fluid as Electrocatalysts for Low-Temperature Fuel Cells

Lin Y., Cui X., Wang J., Yen C.H., Wai C.M., Pacific Northwest National laboratory, US

In recent years, the use of supercritical fluids (SCFs) for the synthesis and processing of nanomaterials has proven to be a rapid, direct, and clean approach to develop nanomaterials and nanocomposites. The application of supercritical [...]

A Simple Method to Prepare Template-removed Zeolite MFI Nanomaterials

Li Q., Wang J., Yuan H., Shanghai Second Polytechnic University, CN

A method of non-thermal, photochemical calcinations is described for an efficient and spatially controlled removal of the organic template in the preparation of zeolite MFI nanoparticles and thin films. High silica MFI nanoparticles and thin [...]

A new system of composites: MWNT-mullite

Wang J., Kou H.M., Xiang C.S., Pan Y.B., Guo J.K., Shanghai Institute of Ceramics, Chinese Academy of Sciences., CN

Carbon Nanotubes (CNTs) are attracting increasing interest as constituents of composite materials for a wide range of applications. MWNT (multi-walled CNT)-ceramics composites are in the beginning of research. The mechanical properties of MWNTs-SiO2 composites were [...]

Microfabrication of 3D Structures Using Novel Thermoplastic Elastomers

Sudarsan A.P., Wang J., Ugaz V.M., Texas A&M University, US

We demonstrate the use of novel thermoplastic elastomers synthesized by dissolving readily available polystyrene–(polyethylene/ polybutylene)–polystyrene (SBS/SEBS) triblock copolymers (e.g., Kraton™ G series) in hydrocarbon oils for which the ethylene/butylene midblocks are selectively miscible. The insoluble [...]

High Resolution Compton Imaging of Nanostructures

Wang J., Kim K., UMass Dartmouth, US

We describe a novel and unique imaging technique based on Compton scattering, a fundamentally different physical process than those based on photo-absorption techniques (such as XPS and its variants UPS/SRPS). This is unique since it [...]

Diamond Materials for MEMS and NEMS Structures and Devices

Butler J.E., Feygelson T., Sekaric L., Craighead H., Wang J., Nguyen C.T.-C., Naval Research Laboratory, US

Diamond materials offer great potential for many MEMS and NES applications. Amongst the attractive technological properties of diamond materials are the high stiffness, thermal conductivity, optical transparency range, chemical stability and erosion resistance, and dopant [...]

Analytical Pull-in Study on Non-Deformable Electrostatic Micro Actuators

Zhe J., Wu X., Cheng J., Wang J., Farmer K.R., Frechette L., Modi V., Columbia University, US

A general theory and method was presented and employed to analyze the static behaviors of non-deformable electrostatic actuator systems with various electrode shapes. This method utilizes capacitance-based generalized equations and provides an easy and time [...]

A Wide Frequency Range Surface Integral Formulation for 3-D Inductance and Resistance Extraction

Wang J., Tausch J., White J.K., Massachusetts Institute of Technology, US

A new surface integral formulation and discretization approach for computing the magnetoquasistatic impedance of general conductors is described. The key advantage of the formulation is that it correctly predicts the resistance and inductance over the [...]

Accurate Inductance Extraction with Permeable Materials Using Qualocation

Massoud Y., Wang J., White J.K., Massachusetts Institute of Technology, US

In this paper we present a more accurate method for solving a frequency-dependent inductance of 3-D structures that contains permeable materials. The extracted inductance using the new method is much more accurate than when using [...]