M. Crosskey and E. Gutierrez-Miravete
Department of Engineering and Science, Rensselaer at Hartford, Hartford, CT, USA
COMSOL Multiphysics has been used to model the temperature distribution produced inside a tool as a result of the forces and friction involved in a cutting process, along with the resulting diffusional flow of cobalt binder from the tool.The model uses as the input tool rake and flank face temperatures determined either experimentally or from other models, and then proceeds to couple the thermal ...
V. Mathur1, J. Li1, J. Therrien2, and W. D. Goodhue1
1Photonics Center, Department of Physics and Applied Physics, University of Massachusetts, Lowell, MA, USA
2Department of Electrical Engineering, University of Massachusetts, Lowell, MA, USA
Several methods have been demonstrated for depositing nanotubes on microstructures, ranging from using an atomic force microscope (AFM) tip for single tube manipulation to chemically pre-patterning the substrate. However, these techniques have a very low yield and poor reproducibility. Sorting techniques involving filtration and ultrasonication face similar issues. Recently, electric field ...
F. Jimenez, S. D. Ekpe, and S. K. Dew
Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, USA
The plasma characteristics of a low pressure plasma discharge are dependent on the process conditions in a complicated manner. In order to understand this dependence, a comprehensive model, which takes into consideration the effects of the E x B field and gas heating on the transport of plasma particles, is required.In this work, a Monte Carlo - fluid - Poisson hybrid model is used in describing ...
J. Dixon1, D. Burkes2, and P. Medvedev2
1Clemson University, Clemson, SC, USA
2Idaho National Laboratory, Idaho Falls, ID, USA
A three-dimensional heat transfer model of the friction bonding (FB) process implementing shallow pin penetration for cladding monolithic nuclear fuel foils is presented.Temperature distribution during the FB process as a function of fabrication parameters such as weld speed, tool load, and tool rotational frequency are predicted. Model assumptions, settings, and equations are described in ...
U. K. Veeramachaneni, and R. Lloyd Carroll
Department of Chemistry, West Virginia University, Morgantown, WV, USA
A model is presented for predicting the motion of magnetizable particles in a gradient magnetic field, considering the effects of fluidic forces on particles in the micro system.The micro system consists of a gradient magnetic field (such as that produced by a solenoid or permanent magnet), a magnetizable particle, and the fluid surrounding the particle (water).Particles located in the gradient ...
Modeling of the Quantum Well and Cascade Semiconductor Lasers using 8-Band Schrödinger and Poisson Equation System
M. V. Kisin
Electrical Engineering, State University of New York, Stony Brook, NY, USA
An eight-band quantum mechanical model of the electron and hole energy spectrum, in nanoscale semiconductor heterostructures with phenomenological boundary conditions for the charge carrier multicomponent effective wave function at the heterostructure interfaces, has been formulated using symmetry.COMSOL programs based on this model were developed and used for design and simulation of ...
H. Esfandyarpour1,2, A. Maiyegun1, and R. W. Davis2
1Center for Integrated Systems, Department of Electrical Engineering, Stanford University, Stanford, CA, USA
2Stanford Genome Technology Center, Stanford, CA, USA
We present a preliminary investigation of a Nanoneedle biosensor as an ultra sensitive and localized impedance biosensor using COMSOL.This preliminary study was performed to prove the feasibility of the impedance biosensor for detection of protein or nucleic acids. By monitoring the change in capacitance and impedance of this structure, we aim to characterize and classify biological species such ...
COMSOL-Based Numerical Analysis of The Electric Field Distribution During Electrospinning and Piezo-response Imaging of Ultra-Fine Lead Zirconate Titanate Fibers
Y. Wang and J. Santiago-Avilés
Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA
In this paper, we present our results on synthesizing micro and nanoscopic lead zirconate titanate (PZT) fibers using electrospinning. Furthermore, the PZT fibers have been characterized using the piezo-response imaging (PRI) technique originally developed for the characterization of piezoelectric thin films.As both electrospinning and PRI work by virtue of electric field, the desired spatial ...
Professor of Mechanical Engineering
Director of the Nevada Center for Advanced Computational Methods (NCACM)
University of Nevada, Las Vegas
Las Vegas, NV
In this presentation, four benchmark problems are tested using COMSOL Multiphysics as well as other commercial software packages, comparing their performance. This is done for fluid-structure interaction, fully coupled electronic current conduction with thermal and structural analysis, electromagnetic wave propagation and electric generators. Results compared with data in the literature show ...
Los Alamos National Laboratory
Los Alamos, NM
In this presentation, the following modeling applications are considered: Heat treatment of carbon fiber-epoxy parts Growth and contact of corrosion spot Gas saturation in epoxy cartridges Design of mechanical assembly for corrosion All models are accompanied with a description of the physics, problem formulation as well as results from ...