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 of Singlet Oxygen during Photodynamic Therapy using COMSOL

T.C. Zhu, J.C. Finlay, X. Zhou, and J. Li
Department of Radiation Oncology, University of Pennsylvania

Photodynamic therapy is a new cancer treatment modality based on the interaction of light, photosensitizers, and oxygen. Yet, when the concentration of the singlet oxygen exceeds a certain threshold in a cell, irreversible apoptosis or necrosis occurs. The time dependences of the concentrations were obtained for the photosensitizer and intracellular receptors using the COMSOL Reaction ...

Electric Current Model of Varying Tissue Properties

D.J. Evans[1], and M.L. Manwaring[1,2]
[1] Brain Instrumentation Lab, Brigham Young University
[2] University of Idaho, Moscow

A COMSOL Multiphysics 2D model of human tissue focuses on the change in dielectric properties (conductivity and permittivity) due to temperature, tissue type, blood flow, structure and other properties. These induced changes in dielectric properties result in significant changes in temperature and possible breakdown of the tissue. The result of this complex interaction is a feedback loop that ...

COMSOL Modelling of the Gas Mixing Process in a Ripple Reducer for NPL’s Time Division Dilution System

J. Wang, B.A. Goody, and M.J.T. Milton
National Physical Laboratory, Teddington, Middlesex, UK

The mixing process of a ripple reducer designed for a time division dilution system (TDD) that dynamically generates calibration gas mixtures is modelled in 2D using COMSOL Multiphysics. The model can been used to visualize and optimize the mixing process and extract parameters of interest at chosen times and positions. The simulated time response of an analyte concentration agrees with ...

Magnetic Liquids for Lab-on-a-chip and Rapid Diagnostics Applications

H. Köser
Yale University

In this presentation we outline our recent work on Magnetic Liquids, and the great number of application areas these are used. Ferrofluids are nanometer sized magnetic particles, covered by a surfactant, suspended in a carrier medium compatible with the surfactant material. Ferrofluids are applicable to a great and ever increasing number of application areas, such as: • Liquid Seals and ...

High-Performance Multiphysics Simulations

M. Ringh
COMSOL AB

In this presentation we present where COMSOL Multiphysics and its modules will be in the year 2007. The presentation considers the upcoming features, not only from a developers point of view, but also through examples from different branches of applied physics and mathematics. In addition, we present some important milestones during the past 10 years for COMSOL ...

Multiphysics 2007

J. Dunec
COMSOL, Palo Alto

In this presentation we present where COMSOL Multiphysics and its modules will be in the year 2007. The presentation considers the upcoming features, not only from a developers point of view, but also through examples from different branches of applied physics and mathematics. In addition, we present some important milestones during the past 10 years for COMSOL ...

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