modeling – Page 17 – TechConnect Briefs

A Common Basis for Mixed-Technology Micro-System Modeling

Hanna J.P., Hillman R.G., Air Force Research Laboratory, US

An ad hoc working group, organized under the DARPA Composite CAD program, is developing a common set of VHDL-AMS (VHSIC Hardware Description Language for Analog and Mixed Signal) definitions for modeling mixed-technology systems. This common [...]

New Materials Design.Free-Base Porphyrin and Its Meso-Tetrahalogenated Derivatives

Nguyen K.A., Pachter R., Air Force Research Laboratory, US

Ab initio electronic structure theory has been applied to predict the structures and electronic spectra of free-base porphyrin (PH2) and its meso-tetrahalogenated derivatives (m-PX8H2, X = F, Cl, Br). Structures, singlet-triplet energy gaps, and electronic [...]

Template Recognition of Organosiloxane Stereoregular Macrocycles. Computational and Experimental Modeling of Sol-Gel Systems Formation

Timofeeva T.V., Clark R.D., Shchegolikhina O.I., Allinger N.L., New Mexico Highlands University, US

Recently a series of cage-like organometalla-siloxanes (OMS) were synthesized, isolated, and chara terized by single crystal X-ray analysis. Synthesis of these compounds resemble processes which occur during sol gel structure formation. The main attractive feature [...]

The Art of Modeling Coupled-Field Effects in Microdevices and Microsystems

Wachutka G., Münich University of Technology, DE

The rapid progress in microsystems technology is increasingly supported by MEMS-specific modeling methodologies and dedicated simulation tools. These do not only allow the visualization of fabrication processes and operational principles, but they also assist the [...]

Living in an Expanding TCAD Space

Borucki L.J., Motorola, Inc., US

A substantial number of important industrial modeling and simulation problems lie outside of the scope of commercial TCAD (Technology Computer-Aided Design) software.The tools needed to solve such problems include a good PDE (Partial Differential Equation) [...]

Design and Modelling of Optical Microsystems – An Approach to a User-Friendly System Integration Technique

Wächter C., Schreiber P., Karthe W., Elbers J-P, Glingener C., Voges E., Krabe D., Dümcke R., Reichl H., Hagner G., Schröter S., Bartelt H., Stock E.A., Bauer G., Schäfer W., Sickinger H., Schwider J., Fraunhofer-Institut fur Angewandte Optikund Feinmechanik, DE

Optical microsystems usually are of a hybrid nature. They consist of optical components. i.e.micro-optical and or integrated-optical ones, and additionally they include at least mechanical and packaging components. Therefore, a complete design process has to [...]

Towards an Integrated Environment for Modeling and Simulating an Electro-Optic Measurement Microsystem

Barwicz A., Ben Slima M., Wisniewski M.P., Universite du Quebec a Trois-Rivieres, CA

The problem of tools for modeling simulating and testing measurement microsystems is addressed. The design methodology underlying the proposed integrated software & hardware environment for modeling and simulating measurement microsystems is based on functional simulation [...]

Automated Solid Model Extraction for MEMS Visualization

DeVoe D.L., Green S.B., Jump J.M, University of Maryland, US

A software tool has been developed to enable the rapid generation of solid models for MEMS structures. The automated 3-dimensional model extraction (3DMX) software, together with a description of a MEMS process, is capable of [...]

Complete Transient Simulations of Electrostatic Actuators

Cojocaru C., Lerch P., Kloeck B., Bourgeois C., Renaud Ph., EPFL, CH

A code for the dynamical simulation of electrostatic actuated micromechanical systems with complex 3D geometry was created. It allows exact electrical force computation at each time step during the dynamic analyses. A finite element method [...]

Simulation and Modeling of Optoelectronic Devices, Circuits and Systems

Morikuni J.J., Mena P.V., Harton A.V., Wyatt K.W., Motorola, US

Holographic optical elements fabricated from DuPont's OMNIDEXô photopolymer have been demonstrated in a variety of product prototypes in which optical interconnect and semiconductor optoelectronic devices are integrated. With the emergence of Fibre Channel, Gigabit Ethernet, [...]