Li J. – Page 2 – TechConnect Briefs

Enhanced UV Light Emission in Silicon nanoparticles

Singh A., Grycznski K.G., Rout B., Li J., McDaniel F., Neogi A., Sahu G., Mahapatra D.P., University of North Texas, US

UV light emission comparable to GaN based semiconductor is observed from gold-implanted Si (100) semiconductors. A low energy Au implant forming the Si nanoparticles or quantum dots are been irradiated and recrystallized by a MeV [...]

Advancements in the Supercritical Water Hydrothermal Synthesis (scWHS) of Metal Oxide Nanoparticles

Lester E., Blood P., Li J., Poliakoff M., University of Nottingham, UK

Supercritical Water Hydrothermal Synthesis (scWHS) is a relatively simple and environmentally friendly process for the production of potentially valuable metal oxide nanoparticles. This paper presents the conclusions of collaborative work between chemical engineers and chemists [...]

Scale up production of nanoparticles using hydrothermal synthesis

Lester E., Poliakoff M., Li J., Guy B., Tinsley N., Blood P., The University of Nottingham, UK

This paper shows how continuous hydrothermal synthesis can be scaled up for commercial scale production using a patented reactor design. There are severe limitations with most nanomaterial manufacturing methods not excluding hydrothermal synthesis. Hydrothermal synthesis [...]

Current-induced Breakdown of Carbon Nanofibers Under Vacuum and Atmospheric Conditions

Kitsuki H., Ngo Q., Suzuki M., Gleason K., Wilhite P., Cassell A.M., Moylan C.R., Li J., Yang C.Y., Santa Clara University, US

Current-induced breakdown phenomena of carbon nanofibers (CNFs) for the development of carbon-based interconnects are investigated to reveal current-carrying capacity and reliability of CNF devices. Scanning transmission electron microscopy (STEM) techniques are developed to study the [...]

“Cultural Bonds” in High Technology: Collaborations between Chinese Researchers in Nanotechnology

Leung R., Li J., University of Wisconsin-Madison, US

Socio-cultural issues have attracted increasing attention from policy makers in high technology. For example, a certain “culture” of high-tech fear, exemplified by Michael Crichton’s best-selling novel Prey, seems to have emerged in U.S. In this [...]

Advancements in the Supercritical Water Hydrothermal Synthesis (scWHS) of Metal Oxide Nanoparticles

Lester E., Blood P., Li J., Poliakoff M., University of Nottingham, UK

Supercritical Water Hydrothermal Synthesis (scWHS) is a relatively simple and environmentally friendly process for the production of potentially valuable metal oxide nanoparticles. This paper presents the conclusions of collaborative work between chemical engineers and chemists [...]

Hetero-bifunctional Poly(ethylene glycol) Modified Gold Nanoparticles as an Intracellular Tracking and Delivery Agent

Fu W., Shenoy D., Li J., Crasto C., Jones G., Dimarzio C., Sridhar S., Amiji M., Northeastern University, US

To increase the targeting potential, circulation time, and the flexibility of surface-attached biomedically-relevant ligands on gold nanoparticles, hetero-bifunctional poly(ethylene glycol) (PEG, MW 1,500) was synthesized having a thiol group on one terminus and a reactive [...]

Optimal Design of an Electrostatic Zipper Actuator

Brenner M.P., Lang J.H., Li J., Slocum A.H., Harvard University, US

We describe a method for predicting the optimal design of an electrostatic zipper actuator. The shape of the zipping beam and the electrode are optimized to maximize the applied force at a given stroke, while [...]

Optimal Design of a MEMS Relay Switch

Brenner M.P., Lang J., Li J., Qiu J., Slocum A., Harvard University, US

We describe a novel methodology for predicting optimal designs for microelectromechanical devices. The methods are applied towards the optimization of component shapes of a bistable MEMS switch. Small modifications in component shapes lead to a [...]