University of Illinois at Urbana-Champaign – Page 3

Simulation of Carbon Nanotube-based Nanoelectromechanical Switches

Dequesnes M., Rotkin S.V., Aluru N.R., University of Illinois at Urbana-Champaign, US

We study the pull-in voltage characteristics of several multiwall nanotube electromechanical switches such as suspended carbon nanotubes over a graphitic ground lectrode. Electromechanical analysis has been performed by accounting for three coupled energy domains: elastostatics, [...]

Transient Analysis of Electroosmotic Flow in Nano-diameter Channels

Qiao R., Aluru N.R., University of Illinois at Urbana-Champaign, US

Transient analysis of electroosmotic flow in a nano-diameter channel is presented. The time for flow to reach steady state in a nano-diameter channel for various Debye lengths is investigated by solving the Navier-Stokes equations in [...]

Dynamic Analysis of Electrostatic MEMS by Meshless Methods

Li G., Aluru N.R., University of Illinois at Urbana-Champaign, US

Electrostatically actuated microstructures are widely used in microelectromechanical systems (MEMS). Computational analysis of electrostatic MEMS requires a self-consistent solution of the interior elastic domain and the exterior electrostatic domain. This paper proposes an efficient approach [...]

A Compact Model for Flowrate and Pressure Computation in Micro-fluidic Devices

Qiao R., Aluru N.R., University of Illinois at Urbana-Champaign, US

A compact model to compute flowrate and pressure in micro-fluidic devices is presented. The micro-fluidic flow can be driven by either an applied electric field or by a pressure gradient or both. In the proposed [...]

Transient Analysis of Electroosmotic Flow in Nano-diameter Channels

Qiao R., Aluru N.R., University of Illinois at Urbana-Champaign, US

Transient analysis of electroosmotic flow in a nano-diameter channel is presented. The time for flow to reach steady state in a nano-diameter channel for various Debye lengths is investigated by solving the Navier-Stokes equations in [...]

An Approach to Quantum Correction in Monte Carlo Device Simulation

Winstead B., Tsuchiya H., Ravaioli U., University of Illinois at Urbana-Champaign, US

A particle-based approach coupled with quantum potential corrections is very attractive for practical simulation of nanoscale semiconductor devices. We present here a quantum correction approach derived from a simplification of the Wigner function transpo

A Combined DSMC/Meshless Technique for Multiscale Analysis of Microfluidic Filters

Aktas O., Aluru N.R., University of Illinois at Urbana-Champaign, US

A multiscale method that couples a meshless Stokes solver and a DSMC simulator is reported. The method is based on overlapped Schwarz alternating method with Dirichlet-Dirichlet type boundary conditions for domain decomposition and meshless interpolation

Modeling of Ionic Hydrogel Kinetics in Buffered Solutions

Ohs R.R., De S.K., Aluru N.R., University of Illinois at Urbana-Champaign, US

In this paper, we present the meshless Finite Cloud Method (FCM) for the solution of a time-dependent partial differential equation governing ionic gel swelling. Using a point distribution, FCM constructs interpolation functions without assuming any [...]

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

Long D.S., Shannon M.A., Aluru N.R., University of Illinois at Urbana-Champaign, US

In this paper we introduce a novel method, based on the Lagrange Multiplier Method (LMM), for calculating pull-in voltages in MEMS. This method combines the finite-element with a displacement constraint and boundary element method. The [...]

Techniques for Coupled Circuit and Micromechanical Simulation

Chen J., Kang S-M, University of Illinois at Urbana-Champaign, US

This paper details advanced simulation techniques for efficiently determining system behavior of integrated microsystems that contains both circuit elements and micromechanical ones. Techniques for building reduced-order dynamical models for coupled energy domain non-liner (both weakly [...]