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这里您可以找到在全球 COMSOL 年会上所有用户报告的演示文稿。这些演示文稿介绍 COMSOL 用户是如何使用 COMSOL Multiphysics 进行创新性研究和产品设计。研究主题涵盖了包括电气、机械、流体和化工等范围广泛的行业和应用领域。请使用“快速搜索”来查找与您的研究领域相关的演示文稿。

High Coupling Factor Piezoelectric Materials for Bending Actuators: Analytical and Finite Elements Modeling Results

I.A. Ivan[1], M. Rakotondrabe[1], and N. Chaillet[1]
[1]FEMTO-ST Institute, University of Franche-Comte, Besançon, France

New giant piezoelectric factor materials such as PMN-PT and PZN-PT were researched during the last decade and are actually becoming commercially available. As they seem very attractive for actuator designs, we studied their potential in replacing PZT ceramics. In a first comparative approach, we tested a series of classic rectangular composite bimorph structures of different combinations of ...

Multiphysics Modelling of a Micro Valve

F. Bircher[1] and P. Marmet[1]

[1]Institute of Print Technology, Bern University of Applied Sciences, Burgdorf, Switzerland

Electromagnetic micro valves are currently developed empirically or the different physics are treated separately. To accelerate the development-process and for a better understanding of the overall system, a multiphysics simulation is built up. This simulation considers the electromagnetics, the electronics (including the control of the process), the mechanics and the fluidics with respect to the ...

Experimentally Matched Finite Element Modeling of Thermally Actuated SOI MEMS Micro-Grippers Using COMSOL Multiphysics

M. Guvench[1], and J. Crosby[1]
[1]University of Southern Maine, Gorham, Maine, USA

In “Micro-Electro-Mechanical-Systems” shortly known as MEMS, one of the most important and effective principle of creating transduction of electrical power to displacement force is thermal expansion. A slim beam of MEMS material, typically Silicon, is heated by the application of electrical current via Joule heating; it expands and creates motion. In the design of many MEMS devices ...

Design and Development of Microsystems within a Corporate Research Environment by Utilizing Comsol Multiphysics

A. Frey
Siemens AG
Corporate Research & Technologies
Munich, Germany

Alexander Frey received his M.A. degree from the University of Texas, Austin, in 1994, the Dipl. Phys. degree from the University of Wuerzburg, Germany in 1997 and the PhD from the Saarland University, Germany in 2010. In 1997 he joined Research Laboratories of Siemens working on the design of DRAM sensing circuits. In 1999 he joined Corporate Research, Infineon, Munich, Germany. He was engaged ...

Efficient Generation of Surface Plasmon Polaritons with Asymmetric Nano-structures

J. Chen
Peking University
China

This paper covers the following: * All-Optical Light Modulation of surface plasmon polaritons (SPPs) is achieved using asymmetric single nanoslits. A high on/off switching ratio of >20 dB and phase variation of >? were observed with the device lateral dimension of only about 2 ?m. * Efficient unidirectional excitation of SPP as well as beam splitting are achieved using the ...

Effect of Fluid Conditions on Air-Liquid Interface in Hydrophobic Micro Textured Surface

S. Takahashi[1], S. Ogata[1]
[1]Tokyo Metropolitan University Hachioji City, Tokyo, Japan

We studied the influence of a number of gas-liquid interface on the drag reduction effect by numeric simulation. Level set method was used for an analysis of gas-liquid interface. The analytic model is rectangular channel of height h = 5 micrometer and width w = 20 micrometer with two hydrophobic microstructures in bottom of channel. In this channel, we found that the liquid penetrates in the ...

Design, Fabrication and Simulation of Microchannel Network for MEMS

V. Jain[1], A. K. Sharma[2], P. Kumar[2]
[1]Thapar University, Patiala, Punjab, India
[2]Indian Institute of Technology Roorkee, Roorkee, Uttar Pradesh, India

The greatest challenge being faced for realization of Micro-Electro Mechanical System (MEMS) technology is the lack of a simple, quick and reliable method for the fabrication of 3-D microchannel in the range of micrometers. A novel fabrication technique which opens possibilities for the production of these microfluidic channels is presented in this paper. The present paper highlights the ...

Interfacing Continuum and Discrete Methods: Convective Diffusion of Microparticles and Chemical Species in Microsystems

J. Berthier
CEA-LETI, Department of Biotechnology, Grenoble, France

Convective transport of macromolecules or micro and nanoparticles in microsystems are usually predicted by solving the Navier Stokes equations for the carrier fluid and a concentration equation for the diffusing species. In the case of isolated particles or complicated geometries with extremely small apertures or microporous material, the concentration equation maybe replaced by a Monte Carlo ...

Design of High Performance Condenser Microphone Using Porous Silicon

S. Suganthi[1], M. Anandraj[2], and L. Sujatha[1]
[1]Department of Electronics & Communication Engineering, Rajalakshmi Engineering College, Chennai, India
[2]Department of Physics, Rajalakshmi Engineering College, Chennai, India

Porous Silicon (PS) can easily be formed by electrochemical etching of silicon in HF based electrolytes at room temperature. Since, PS is compatible with silicon IC technology; it finds lot of applications in the fabrication of MEMS devices. In the current study, we discuss the design of a condenser microphone using a Silicon/ Porous Silicon composite membrane as a movable plate. The performance ...

Simulation of MEMS Based Pressure Sensor for Diagnosing Sleep Disorders

J. Vijitha[1], S. S. Priya[1], K. C. Devi[1]
[1]PSG College of Technology, Coimbatore, Tamil Nadu, India

Sleep apnea is a type of sleep disorder characterized by pauses in breathing or instances of shallow or infrequent breathing during sleep. There is a need to diagnose sleep apnea since it leads to fluctuations in the oxygen level that in turn affect the heart rate and blood pressure. In order to detect this disorder, a Micro Electro Mechanical System (MEMS) based piezoelectric pressure sensor was ...