Tim Cale, Daniel Bentz, and Max Bloomfield, RPI
We discuss the use of 3D grain continuum modeling to study grain boundary migration driven by differences in strain energy density. COMSOL Multiphysics is used to compute stresses and strain energy densities in polycrystalline structures caused by temperature changes. We treat each grain as a single crystal, with the anisotropic elastic properties of single crystal Cu appropriately rotated to ...
J. Ma, C.T. Smith, G.J. Weisel, B.L. Weiss, N.M. Miskovsky, and D.T. Zimmerman.
The Pennsylvania State University.
We present numerical simulations that complement our experimental results of the microwave heating of copper powder metal compacts in separate electric (E) and magnetic (H) fields of a TE102 cavity. In general, thermal dissipation in the compacts may be attributed to resistive heating, dielectric losses, and magnetic losses. These dissipative mechanisms are coupled to the fields by the effective ...
Applying Grain Continuum Models to Stress Induced Grain Evolution in Next Generation Integrated Circuit Interconnects
D.N. Bentz, M. Bloomfield, J-Q. Lu, R.J. Gutmann, and T.S. Cale
Focus Center—New York, Rensselaer: Interconnects for Hyperintegration
We discuss the use of 3D grain continuum modeling to study grain boundary migration driven by differences in strain energy density. COMSOL Multiphysics is used to compute stresses and strain energy densities in polycrystalline structures caused by temperature changes. The grain boundary speeds are computed using a simple model that relates them to grain boundary mobility and differences ...
B. Srinivasan, S. Tung, Y. Li, and M. Varshney
 Department of Mechanical Engineering, University of Arkansas
 Department of Biological and Agricultural Engineering, University of Arkansas
The impedance based biosensor utilizes the electrical impedance measurements between interdigitated electrodes integrated into a microchannel containing the target cells in a suspension medium. The detection is based on measuring the change in impedance caused by the presence of bacteria. In this paper we describe the simulation of impedance measurements using the electromagnetics module of ...
Pryor Knowledge Systems, Inc.
COMSOL, Certified Partner
Efficient, effective, and functional operation of autonomous systems requires a comprehensive real-time understanding, by those systems, of the embedding environment. This paper presents a brief overview of the multiphysics considerations involved in the development of models for thermoresistive and magnetoresistive sensors systems.
Use of COMSOL to Estimate the Thermal Properties and Kinetic Parameters for the Degradation of Anthocyanins in Grape Pomace
D.K. Mishra, and K.D. Dolan[1,2]
 Department of Biosystems and Agricultural Engineering, Michigan State University
 Department of Food Science and Human Nutrition, Michigan State University
Degradation of components in low-moisture and high-temperature food is difficult to model because of the temperature gradient and long heating time. A method was developed to estimate the thermal properties of grape pomace and the rate constant and activation energy of anthocyanin degredation.
Chemical Pulse Dynamics and Control in Microdesigned Catalysts: Phenomena, Modeling and Computational Wrappers
L. Qiao, and I.G. Kevrekidis
Department of Chemical Engineering, Princeton University
We study the effect of two-dimensional composite catalyst geometry and spatiotemporal laser heating on the dynamics of CO oxidation on a Pt (110) surface. The project involves a combination of modeling, computation and experimentation. We show (through both FEMLAB and specially designed experiments) that local laser heating actuation appropriately designed in space and time can be critical in ...
S.B. Shetye, J.S. Agashe, and D.P. Arnold
University of Florida
The objective of this researh is to develop new, magnetically-directed, self-assembly approaches to enable three-dimensional structures to be formed in parallel from a heterogeneous mixture of parts of arbitrary size and shape.
V.V. Narvekar, Q. Fan, and S. Warner
Dept. of Materials and Textiles, University of Massachusetts, Dartmouth
A computational model is used to describe the current density distribution and the water management in the Nafion® 117 and Nafion®1115/PP composite membranes. The effects of the change in the membrane water content and the back-diffused water on distribution of proton concentration is discussed.
W. Huang, X. Huang, and K. Reifsnider
Connecticut Global Fuel Cell Center, University of Connecticut
Meso-scale structures significantly influence fuel cell performance and durability. We have modelled the multiphysics processes in the solid oxide fuel cell cathode-electrolyte interfaces considering the detailed distribution and geometry of the ionic conducting phase, the electronic conducting phase, and the pores. The model is solved using COMSOL Multiphysics and results provide ...