ACM-SIGDA
Emerging Technologies
Emerging Technologies: Device Modeling and Simulation
Based on Session 7B of ICCAD-2002
Fast Methods for Simulation of Biomolecule Electrostatics
Author: Shihhsien Kuo - Massachusetts Institute of Tech., Cambridge, MA
Abstract: Computer simulation is an important tool for improving our understanding of biomolecule electrostatics, in part to aid in drug design. However, the numerical techniques used in these simulation tools do not exploit fast solver approaches widely used in analyzing integrated circuit interconnects. In this paper we describe one popular formulation used to analyze biomolecule electrostatics, present an integral formulation of the problem, and apply the precorrected-FFT method to accelerate the solution of the integral equations. The challenge of extending Moore’s Law past the physical and economic bar-riers of present semiconductor technologies calls for novel nanoelectronic solutions. Circuits composed of mixed silicon semiconductors and nanoelectronics can provide a means for gradually switching technology paradigms. We suggest a design methodology to accompany this concept. Furthermore, we explore design tradeoffs for a nanoscale crossbar technology that supports CMOS/nano co-design.
Efficient Mixed-Domain Analysis of Electrostatic MEMS
Author: Gang Li - Univ. of Illinois, Urbana, IL
Abstract: We present efficient computational methods for scattered point and meshless analysis of electrostatic microelectromechanical systems (MEMS). Electrostatic MEMS are governed by coupled mechanical and electrostatic energy domains. A self-consistent analysis of electrostatic MEMS is implemented by combining a finite cloud method based interior mechanical analysis with a boundary cloud method based exterior electrostatic analysis. Lagrangian descriptions are used for both mechanical and electrostatic analyses. Meshless finite cloud and boundary cloud methods combined with fast algorithms and Lagrangian descriptions are flexible, efficient and attractive alternatives compared to conventional finite element/boundary element methods for self-consistent electromechanical analysis. Numerical results are presented for an electrostatic comb drive device.
FastMag: A 3-D Magnetostatic Inductance Extraction Program for Structures with Permeable Materials
Author: Yehia M. Massoud - Synopsys, Inc., Mountain View, CA
Abstract: In this paper we present a fast and efficient program for extraction of the frequency dependent inductance of structures with permeable materials. The program, FastMag, uses a magnetic surface charge formulation, efficient techniques for evaluating the required integrals, and a preconditioned GMRES method to solve the resulting linear system. Results from examples are presented to demonstrate the accuracy and versatility of the FastMag program.