Tomothy C. Zhu,
Univ. of Pennsylvania
A diode radiation detector is often used for in-vivo patient dosimetry to verify overall patient treatment quality with respect to calculation, setup, and delivery for radiation therapy. The non-linear differential equation for the transient response of radiation current was solved numerically using FEMLAB to determine the diode sensitivity as a function of instantaneous dose rate. The numerical ...
Flow Diversion around Elliptical Inhomogeneities Modeled with FEMLAB and the Analytic Element Method
John L. Nieber1,
1University of Minnesota, 2Universety of Georgia
Sudden transitions in hydraulic properties in natural porous media systems associated with deposited inhomogeneities can lead to large diversions flow around or convergence of flow toward the inhomogeneity. Modeling of these features within large unsaturated zones containing such inhomogeneities is challenging because of the need for refined discretization near the boundary of the ...
Finite element modeling of the field enhancement phenomenon in nanoscale field emitters and field ionizers
Ramin Banan Sadeghian and Mojtaba Kahrizi,
Interest in nanoscale field emission and field ionization devices has been renewed in recent years. Several new materials and novel device concepts have been introduced with promising field emission (FE) and field ionization (FI) behavior. Among them vertical ZnO nanowires (ZnONW) exhibit unique FE properties at relatively low applied electric fields. Using FEMLAB, we employed finite element ...
This presentation looks at the use of COMSOL for teaching and consultancy purposes within the field of ground-water flow. --------------------------------- Nils-Otto Kitterød was one of the keynote speakers at the COMSOL User's Conference, fall 2005 in Oslo
Parametric Analysis of Electric Field Distribution of Rat Vasculature using Finite Element Time Domain Technique
Chris Capaccio1, Nikolay Stoykov1, Fermin Cortes2,
Raji Sundararajan1,3, and David A. Dean1
1Northwestern University, 2University of Waterloo,
3Arizona State University
This paper deals with the study of the effects of tissue parameters, such as electrical conductivity and permittivity on the electric field distribution of a rat mesenteric vasculature model under electroporation conditions. Electroporation is a nonviral, physical technique that involves transient dielectric breakdown of the cell’s plasma membrane when high intensity and short duration ...
T. Verdot and M. Collet,
FEMTO-ST Institute, Dept of Applied Mechanics
Nowadays, lightweight materials are widely used to reduce weight and increase available space in moving structures such as cars or aircraft. However, they constitute an intense vibrating environment that can strongly affect the operation of embedded micro-transducers such as frequency generators or inertial sensors. To alleviate this problem, we propose the concept of a Micro-Active Suspension ...
College of Chemistry and Molecular Sciences
This presentation is written in Chinese. --------------------------------- Keynote speaker's biography: Yang Tianhong received his M Sc. from the China Coal Research Institute in 1998 and his Ph.D from Northeastern University, China in 2001. After a stint as a Visiting Professor at the Hong Kong University, Yang Tianhong is presently a Visiting Professor at the University of Western Australia.
Department of Electrical and Computer Engineering
In this presentation, cerebral blood flow (CBF) is modeled using a mathematical model, a statistical model and numerical examples. In the mathematical model, blood flow is described using Navier-Stokes equations. In the statistical model, the experiments or the data measurement process is simulated and to study how the noise in the measurements affects the ability to estimate the parameters, ...
Numerical simulation, especially by the finite element method, is widespread in research and development laboratories. Three examples of the use of FEMLAB, in fields as diverse as gamma-ray detection by room-temperature semiconductors, fluorescence-enhanced Diffuse Optical Tomography and microfluidic valve for Lab-on-a-Chip, are presented in this paper. ...