US – Page 459 – TechConnect Briefs

Analysis of Sample Injection and Band-Broadening in Capillary Electrophoresis Microchips

Krishnamoorthy S., Giridharan M.G., CFD Research Corporation, US

An implicit finite-volume numerical scheme has been developed to solve the three-dimensional transport equations that govern the electroosmotic and electrophoretic phenomena. The scheme consists of solving the ion transport equation and electro-neutrality condition coupled with [...]

A Fast Stokes Solver for Generalized Flow Problems

Ye W., Wang X., White J.K., Massachusetts Institute of Technology, US

Computing drag forces on geometrically complicated 3-D micromachined structures, such asan entire comb resonator, is a challenging problem. The recently developed FastStokes solver, based on precorrected-FFT accelerated iterative methods, has made analyzing such problems much [...]

Discrete Impurity Effects in Silicon Quantom Dots

Milicic S.N., Vasileska D., Akis R., Gunther A., Goodnick S.M., Arizona State University, US

We have developed efficient self-consistent 3D Schrodinger-Poisson solver to model the energy level spectrum in silicon quantum dots. We find that the energy level spectrum in the dot can be easily tuned by varying the [...]

A Mathematical Model for Process Control in Laser Chemical Vapor Deposition

Nassar R., Dai W., Zhang C., Lan H., Maxwell J., Louisiana Tech University, US

Laser chemical vapor deposition is a free form technique capable of producing high aspect ratio microstructures of arbitrary shape. The process does not yet have a high resolution required for microfabrication. For this study, we [...]

Nonlocal Problems in MEMS Device Control

Pelesko J.A., Triolo A.A., Georgia Institute of Technology, US

Perhaps the most ubiquitous phenomena associated with electrostatically actuated MEMS devices is the "pull-in" voltage instability. In this instability, when applied voltages are increased beyond a certain critical voltage there is no longer a steady-state [...]

Finite Element Based Electrostatic-Structural Coupled Analysis with Automated Mesh Morphing

Zhulin V.I., Owen S.J., Ostergaard D.F., ANSYS, Inc., US

A co-simulation tool based on finite element principles has been developed to solve coupled electrostatic-structural problems. An automated mesh morphing algorithm has been employed to update the field mesh after structural deformation. The co-simulation tool [...]

Reduced-Order Models of Stress-Stiffened MEMS Structures

Varghese M., Rabinovich V.L., Senturia S.D., Massachusetts Institute of Technology, US

We present a process for generating reduced-order models for stress-stiffened MEMS structures. The models are created using the established CHURN process, which uses non-linear, analytic, energy functions to describe the state of each conservative quasi-static [...]

Country: US

Analysis of Sample Injection and Band-Broadening in Capillary Electrophoresis Microchips

A Fast Stokes Solver for Generalized Flow Problems

Discrete Impurity Effects in Silicon Quantom Dots

A Mathematical Model for Process Control in Laser Chemical Vapor Deposition

Nonlocal Problems in MEMS Device Control

Finite Element Based Electrostatic-Structural Coupled Analysis with Automated Mesh Morphing

Mathematical Analysis of Electrostatically Actuated MEMS Devices

A Novel Approach for Determining Pull-In Voltages in Micro-electro-mechanical Systems (MEMS)

A Quadratic Method for Nonlinear Model Order Reduction