Chen Z. – Page 2 – TechConnect Briefs

Interface-trap Charges on Recombination DC Current-Voltage Characteristics in MOS transistors

Chen Z., Jie B.B., Sah C-T, Nanyang Technological University, SG

The interface traps and trapped charges along the surface channel region are generated during transistor stress or operation and primarily responsible for the changes of device properties. The threshold voltage is varied by the generation [...]

Numerical Analysis of Nanofluidic Sample Preconcentration in Hydrodynamic Flow

Wang Y., Pant K., Diffey W., Chen Z., Sundaram S., CFD Research Corporation, US

This paper presents the first, high-fidelity numerical study of nanofluidic streaming potential-based sample preconcentration. Parametric analysis is performed to capture the critical effects of pressure and background electrolyte (BGE) concentration on preconcentrator performance. Our studies [...]

Nanomechanical characterization of UV curable hyperbranched polymers

Kim J., Chen Z., Chisholm B., Patel S., North Dakota State University, US

Hyperbranched polymers were explored to develop UV-curable, protective coatings for aluminum 2024-T3 and their viscoelastic and mechanical properties were characterized using nanoindentation techniques. The coating system consists of a hyperbranched polyester acrylate (CN2300, Sartomer Inc), [...]

High Conentration of Interface Traps in MOS Transistor Modeling

Chen Z., Jie B.B., Sah C-T, Xiamen University, CN

Modifications of the MOS capacitor and transistor characteristics by the presence of a high concentration of interface traps are described. Change or distortion of the gate/base voltage dependent characteristics are presented, such as the gate [...]

A History of Electronic Traps on Silicon Surfaces and Interfaces

Sah C-T, Jie B.B., Chen Z., University of Florida, US

A review of the electronic or electron and hole traps on silicon surfaces and interfaces is given. They are increasingly affecting the electrical signal properties of silicon diodes and transistors as the technologies for digital, [...]

Cutting Fluorinated/Ozonated Single-Walled Carbon Nanotubes by Pyrolysis

Chen Z., Gu Z., Ziegler K., Chan C.K., Shaver J., Hauge R.H., Smalley R.E., Rice University, US

Fluorinated/ozonated Single-Walled Carbon Nanotubes (SWNTs) was found to have been cut to short length by Pyrolysis and/or piranha treatment. Large scale cutting of SWNTs would lead to novel applications of nanotubes in microelectronics, biological imaging [...]

Numerical Simulation of Electroosmotic Flow in Micro Channels with Analytical Integration of Surface Potential

Chen Z., Athavale M., Przekwas A., CFD Research Corporation, US

We have developed a new methodology to simulate electroosmotic flows in micro channels, which allows us to accurately produce the effects of the double layer without resolving it. The method is a subgrid type model [...]

High-Fidelity and Reduced Models of Synthetic Microjets

Przekwas A.J., Turowski M., Chen Z., CFD Research Corporation, US

Microfabricated arrays of synthetic jets are being explored for applications in aerodynamic flow control, in cooling of electronic packages, and in mixing in microchemical reactors. Computational simulation of coupled unsteady fluid mechanics and electromechanical actuation [...]

High-Fidelity and Behavioral Simulation of Air Damping in MEMS

Turowski M., Chen Z., Prezekwas A., CFD Research Corporation, US

The paper presents simulations of air damping in MEMS, including squeeze-film and viscous dissipation, using different level models: 3D numerical solution of Navier-Stokes equations (using CFD-ACE from CFDRC), and circuit/behavioral model (in SPICE and Saber/MAST [...]