Papers – Page 989 – TechConnect Briefs

Integrated Modeling of Optical MEMS Subsystems

Stoll R., Plowman T., Winick D., Morris A., Coventor, US

This paper presents top-down holistic design and verification of a MEMS-based 3-D optical switching subsystem utilizing an integrated CAD environment. The subsystem design takes place in a nodal simulation environment that includes models for fibers, [...]

Improving Trajectory Piecewise-Linear Approach to Nonlinear Model Order Reduction for Microm䁡chined Devices Using an Aggregated Projection Basis

Rewienski M., White J.K., Massachusetts Institute of Technology, US

In this paper we present an improved algorithm for nonlinear model order reduction (MOR) based on the trajectory piecewise-linear method proposed in [6] which, as shown before, provides an e ective and eÆcient strategy for [...]

Physically-Based Damping Model for Highly Perforated and Largely Deflected Torsional Actuators

Sattler R., Schrag G., Wachutka G., Münich University of Technology, DE

We propose a mixed level simulation scheme for squeeze film damping (SQFD) effects in microdevices, which enables the inclusion of damping effects in system level models of entire microsystems in a natural, physical-based, and flexible [...]

Modeling, Simulation and Design of Piezoelectric Micro-Hydraulic Transducer Devices

Yaglioglu O., Su Y.H., Roberts D.C., Carretero J., Hagood N.W., Massachusetts Institute of Technology, US

This paper reports on modeling, simulation and design considerations for piezoelectric Micro-Hydraulic Transducer (MHT) systems, focusing on power generation applications. Since these devices are complex fluid and structural systems, comprehensive simulation tools are needed for [...]

Numerical Simulation of Droplet Shapes on Rough Surfaces

Patankar N.A., Chen Y., Northwestern University, US

It has been demonstrated that surface roughness causes superhydrophobicity. Our objective is to develop a numerical tool and study the relationship between the roughness characteristics and the apparent contact angle and motion of liquid drops [...]

Modelling Free Jet Ejection on a System Level – An approach for microfluidics

Koltay P., Moosmann C., Litterst C., Streule W., Birkenmeier B., Zengerle R., University of Freiburg, DE

Fast simulation of complex microfluidic systems requires consideration of network simulations based on lumped models as an alternative to standard computational fluid dynamic (CDF) simulations. In this paper we describe an analytical model of an [...]

Transient Filling Flow into Microchannels Considering Surface Tension

Kim D.S., Lee K-C, Lee S.S., Kwon T.H., Lee K-C, Lee S.S., Pohang University of Science and Technology, KR

In this paper, we investigated, both experimentally and numerically, transient “filling” flow into microchannels, which differs from completely “filled” flow in micro-channels. An experimental flow visualization system was devised to observe the characteristics of microchannel [...]

End Effects of Rare Gas Flow in Short Channels and in Squeezed-Film Dampers

Veijola T., Helsinki University of Technology, FI

Simple approximate design formulas (+-5%) for calculating the elongation of the idealized viscous flow channel of rare gas at Knudsen numbers Kn < 100 due to the open end effects. Rectangular channels with a large [...]

Viscous Dissipation Effects For Liquid Flow In Microchannels

Xu B., Ooi K.T., Mavriplis C., Zaghloul M.E., Nanyang Technological University, SG

Different phenomena have been observed in various works indicating that the mechanisms of flow and heat transfer in microchannels are still not understood clearly. There is little experimental data and theoretical analysis in the literature [...]

Simulation Methodology for Dielectrophoresis in Microelectronic Lab-on-a-chip

Leonardi A., Medoro G., Manaresi N., Tartagni M., Guerrieri R., DEIS - University of Bologna, IT

Recent trends in lab-on-a-chip show a growing use of dielectrophoresis (DEP) to manipulate biological objects such as cells and organic molecules [1], [2], [3], [4]. Bringing the advances of microelectronic miniaturization into biological and clinical [...]