K. Kannappan, G. Bogle, J. Travas-Sejdic, and D.E. Williams
University of Auckland, Auckland, New Zealand
Electrochemically-active conducting polymers (ECP) swell or shrink in response to ion and solvent incorporation or ejection as a result of electrochemical reaction of the polymer. When anodic potential is applied to an electrode attached to one end of ECP strip, the oxidation process starts from the electrode and proceeds along the polymer, propagating as a wave. This wave is driven as a ...
S.L. Firebaugh, E.A. Leckie, J.A. Piepmeier, and J.A. Burkhardt
United States Naval Academy, Annapolis, Maryland, USA
Microrobotics has promising applications in microsurgery and microassembly. A challenge in these systems is interfacing with the robot. This project explores crawling robots that are powered and controlled through a global mechanical vibration field. By controlling the frequencies present in the vibration field, the user can then steer the robot. The “robot” has a rectangular body with three ...
S. Maloney[1,2], Y. Li[1,2], G. Auner, and J. Smolinski
Wayne State University, Detroit, MI, USA
Lawrence Technological University, Southfield, MI, USA
We are working on a microfabricated lysing chip that uses a piezoelectric actuator to provide ultrasonic energy to break apart cells. The device contains pillars with varying dimensions. We hypothesize that increasing the aspect ratio of pillars will increase the efficiency of the transfer of ultrasonic energy into the fluid phase and enhance the lysing efficiency. The fluid structure ...
R. Sadleir, A. Minhas, and E.J. Woo
University of Florida, Gainesville, FL, USA
Kyung Hee University, Seoul, Republic of Korea
In an earlier work we developed a finite element bidomain model of an aplysia abdominal ganglion in order to estimate the sensitivity of this contrast mechanism to changes in cell membrane conductance occurring during a gill-withdrawal reflex. We used our model to determine both current density and magnetic potential distributions within a sample chamber containing an isolated ganglion when it ...
R. Firoozabadi, and E.L. Miller
Airvana Inc., Chelmsford, MA, USA
Tufts University, Medford, MA, USA
In this paper, COMSOL Multiphysics software is utilized as a finite element forward solver to obtain the electromagnetic fields at the receiving antennas while the breast is illuminated by one antenna in the array. Geometry consists of coronal slices of the 3-D breast. Simulations are done by a MATLAB code which runs COMSOL finite element solver and collects the data at the receiving antennas at ...
Numerical Investigation of a Time-dependent Magnetic Actuation Technique for Tagging Biomolecules with Magnetic Nanoparticles in a Microfluidic System
A. Munir, J. Wang, Z. Zhu, and H.S. Zhou
Worcester Polytechnic Institute, Worcester, MA, USA
The magnetic body forces that act on mono-dispersed magnetic nanoparticles (MNPs) tagged biomolecules in a microfluidic system can be efficiently used in various applications that involve separation and detection including DNA and protein analysis, bio-defense, drug delivery, and pharmaceutical development. In this work, we report an FEM model to demonstrate a novel method of tagging ...
A. Jeremic, and A. Atalla
McMaster University, Hamilton, ON, Canada
In this paper, we develop a mathematical model to simulate the movement of bacteria into and within a capillary segment. Also, we model the transportation through capillary walls by means of anisotropic diffusivity that depends on the pressure difference across the capillary walls. By solving the model using COMSOL, it was possible to predict the concentration of bacteria at points within the ...
Osram Sylvania, Beverly, MA, USA
Thomas Dreeben received his B.A. in Philosophy and Mathematics in 1985, and his Ph.D. in Mechanical Engineering in 1997, both from Cornell University. He has worked in automotive fuel systems at Ford Motor Company, and in turbulence at Sandia National Laboratories. He currently works in lighting research at OSRAM SYLVANIA, where his modeling focuses on fluid mechanics and heat transfer as they ...
Tom Quinn works as a Partner Business Development Manager for Microsoft as part of its HPC team working together with ISV, OEM and SI partners, in the HPC marketplace. Before joining Microsoft, Mr. Quinn worked as the Director of Government Business Development for Linux Networx, a small/mid-sized company that provides Linux Clusters, and earlier as Director of Operations and Business ...
R. Malek-Madani, and J.J. Radice
US Naval Academy, Annapolis, MD, USA
The study of deformation of an adhesively bonded sandwich structure reduces to solving the biharmonic equation for the Airy Stress subject to mixed boundary conditions. Because of the nature of the boundary conditions, this boundary value problem does not yield to the standard elementary methods and must be attacked by numerical methods. In this paper we will use COMSOL\'s capability in two ways ...