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Computational electromagnetics for microstrip and MEMS structures

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Title: Computational electromagnetics for microstrip and MEMS structures
Author(s): Xiong, Jie
Director of Research: Chew, Weng Cho
Doctoral Committee Chair(s): Chew, Weng Cho
Doctoral Committee Member(s): Jin, Jianming; Schutt-Ainé, José E.; Aluru, Narayana R.
Department / Program: Electrical & Computer Eng
Discipline: Electrical & Computer Engr
Degree Granting Institution: University of Illinois at Urbana-Champaign
Degree: Ph.D.
Genre: Dissertation
Subject(s): computational electromagnetics integral equation method layered medium Green's function fast algorithm Casimir force
Abstract: In the first part of this thesis, the quasi-3D thin-stratified medium fast-multipole algorithm (TSM-FMA) will be introduced for the analysis of general microstrip structures. It is based on a newly developed matrix-friendly dyadic Green's function for layered media (DGLM), which is represented in terms of only two Sommerfeld integrals and is suitable for developing fast algorithms. The path deformation technique and the multipole-based acceleration are used to expedite the matrix-vector multiplication. Both the computation time per iteration and the memory requirement are $O(N\log N)$ in the quasi-3D TSM-FMA. In the second part, an efficient and accurate way to evaluate the Casimir force between arbitrarily-shaped conducting objects in both 2D and 3D geometries will be presented. The Casimir force is the dominant force between charge-neutral objects when the separation is less than a micron. It is important in the design of micro-electromechanical systems (MEMS) and nano-electromechanical systems (NEMS). Our method casts the evaluation of the force as a series of traditional 2D or 3D electromagnetic scattering problems, which are formulated with integral equations and then solved using the method of moments. We demonstrate that this quantum electrodynamics phenomenon can be studied using the knowledge of classical electrodynamics.
Issue Date: 2010-05-19
URI: http://hdl.handle.net/2142/16127
Rights Information: Copyright 2010 Jie Xiong
Date Available in IDEALS: 2010-05-19
Date Deposited: May 2010
 

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