Technical Papers and Presentations

Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Simulation of the Capacitive Double Layer at the Interface between Microelectrodes and Cortical Tissue Using Comsol Multiphysics and SPICE Modeling

R.M. Field, and M. Ghovanloo
NC-Bionics Laboratory, North Carolina State University

The interface between microelectrodes and biological tissue is of great interest to researchers working on extracellular stimulation. In this paper, we outline a method used to model the complex double layer capacitance at the interface between the electrodes and the cortex. This model relies on the combined power of SPICE, MATLAB, and COMSOL Multiphysics. The goal of this model is to ...

Modeling Acoustic Wave Scattering from Cells and Microbubbles

O. Falou [1], J.C. Kumaradas[2], and M.C. Kolios[1,2]
[1] Dept. of Electrical and Computer Engineering, Ryerson University
[2] Dept. of Physics, Ryerson University

A finite-element model of wave propagation using COMSOL Multiphysics has been developed to solve the problem of ultrasound scattering from spherical structures. This model will be used to predict ultrasound backscatter from cells for ultrasound tissue characterization, and scattering from microbubble contrast agents. In this paper, we discuss an improvement to our model by using a ...

FEM Simulation of a Micro-Cantilever Optical-MEMS Sensor

V. Mathur, J. Li, and W.D. Goodhue
Photonics Center, Department of Physics and Applied Physics, University of Massachusetts, Lowell

In this work a micro-cantilever optical-MEMS sensor based on the AlGaAs system is designed and modeled. The device consists of two micro-cantilever beams perfectly aligned with the free ends separated by approximately 200 nm up to 2000 nm. The finite element method (FEM) (COMSOL Multiphysics) has been employed here to model the structural deformation and light propagation through the device. ...

Study of the Electric Field Intensity in Bushing Integrated ZnO Surge Arresters by Means of Finite Element Analysis

M.R. Meshkatoddini
Shahid Abbaspour (PWUT) University of Technology, Tehran, Iran

In this paper, the electric field in different types of ZnO surge arresters has been investigated by means of finite element modeling using COMSOL Multiphysics. Both conventional and novel built-in-bushing type arresters were studied. Electric field modeling helps designers consider important factors affecting the maximum field intensity in the arrester, avoiding damages to the arrester ...

Hybrid Modeling of a DC Magnetron Plasma Discharge

S.D. Ekpe[1], F. Jimenez[2], and S.K. Dew[2]
University of Alberta, Edmonton

This work is focused on the coupling of a Monte Carlo code with COMSOL Multiphysics conduction/convection, and electrostatic modules in solving fluid-Poisson model for the plasma properties for a practical DC magnetron low pressure plasma discharge. The magnetostatic module was used in calculating the required magnetic field.

Expand and Manage Your COMSOL Materials Library

MatWeb
Material Property Data

These slides are from a Poster presented at the Boston User’s Conference. They will explain how you can use MatWeb to automatically add any of our 60,000 material specifications to you COMSOL material library.

Use of COMSOL Multiphysics for Optimization of an All-Liquid PEM Fuel Cell

G.H. Miley[1], and E.D. Byrd[2]
[1] Department of NPRE, University of Illinois at Urbana-Champaign
[2] Department of ECE, University of Illinois at Urbana-Champaign

A model has been designed and constructed for the all-liquid, sodium borohydride/hydrogen peroxide fuel cell. The electrochemical behavior, momentum balance, and mass balance effects within the fuel cell are modeled using the Butler-Volmer equations, Darcy’s law, and Fick’s law, respectively within COMSOL Mutiphysics. The simulations performed with the model indicate that an optimal ...

Modeling and Analysis of CaBr2 Hydrolysis

S.A. Lottes, and R.W. Lyczkowski
Argonne National Laboratory

The main focus of this paper is the modeling, simulation, and analysis of the CaBr2 hydrolysis reactor stage in the Calcium-Bromine thermochemical water splitting cycle for nuclear hydrogen production. One concept is to use a spray reactor of CaBr2 into steam. Given the large heat reservoir contained in a pool of liquid CaBr2 that allows bubbles to rise easily, using a bubble column for the ...

Single Mode Microwave Heating of Copper Powder Metal Compacts

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 ...

Mesh Analysis with Applications in Reduced-Order Modeling and Collision Avoidance

M. Bikdash, S. Karagol, and M. Charifa
Department of Electrical Engineering, North Carolina A&T State University

Tools are developed that mine the mesh and simulation data provided by the finite-element mesher and solver in COMSOL. The tools developed are used in two applications. In the first, a thermal system is decomposed and an equivalent circuit (EC) is developed for reduced order modeling. In the second application which arises in robotics, the COMSOL mesh is used to plan paths of the robot ...

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