A. Weddemann, J. Jadidian, S. Khushrushahi, Y. Kim, and M. Zahn
Research Laboratory of Electronics
Massachusetts Institute of Technology
The modeling of ferromagnetic materials is a challenging task of high industrial and academic impact. Thin film and granular systems form the basis of novel spintronic devices such as modern hard drives with a high data area storage density. In order to push the current limits even further and to design more efficient devices, a strong understanding of the governing dynamics is required. We ...
Modeling of Silicon Piezoresistive Pressure Sensor: Application to Prevent Some Diabetes Complications
F. Kerrour, A. Beddiaf, M. Benabbas-Marir
MODerNa Laboratory, University Mentouri, Constantine, Algeria
Several analytical solutions describing the mechanical behavior of a silicon micro membrane deflection, perfectly embedded and subjected to a uniform and constant pressure have been proposed. The obtained results are compared with those obtained by using COMSOL software for a rectangular diaphragm deflection. COMSOL Multiphysics is powerful software for solving problems based on partial ...
B. Reine, J. Di-Tomaso, G. Dusserre, P. Olivier
Université de Toulouse, UPS, INSA, Mines Albi, ISAE, ICA, IUT, Dept. GMP, Toulouse Cedex, France
RESCOLL - Société de Recherche, Pessac Cedex, France
This paper addresses the study of thermal behavior of thermoset polymer matrix filled with microparticles. A numerical model was developed with COMSOL Multiphysics to get a random spatial distribution of fillers in a representative volume element (RVE). This model was then compared to an analytical reference model (Hamilton model) and experimental results. This comparison highlights a good ...
The Effects of the Electrical Double Layer on Giant Ionic Currents through Single Walled Carbon Nanotubes
G. Zhang[,][,], S.L. Bearden 
Department of Bioengineering, Clemson University, Clemson, SC, USA
Department of Electrical and Computer Engineering, Clemson University, Clemson, SC, USA
Institute for Biological Interfaces of Engineering, Clemson University, Clemson, SC, USA
Electrofluidic transport through a single walled carbon nanotube (SWCNT) is enhanced by electroosmosis. Electroosmosis is made possible in these devices by the combination of a large slip length within SWCNTs and the interfacial potential at the solution/nanotube interface. A computational model of a SWCNT device was developed using COMSOL Multiphysics to investigate the complete electrical ...
K. PraveenKumar, P. Suresh, K. Subash, M. Alagappan, A. Gupta
PSG College of Technology, Coimbatore, Tamil Nadu, India.
In this work, we present the performance analysis of novel micro machined Piezoresistive fluid flow pressure sensor using COMSOL Multiphysics. The principle of the sensing mechanism is based on the deflection of four sensing layers embedded on a thin membrane. The fluid passes through the layer causes the deflection of the sensing layer which measures the pressure of the fluid. The following ...
H.R. Javani, P. Kagan, F. Huizinga
ASML - MDev – Mechanical analysis, Veldhoven, The Netherlands
ASML - MDev – System Dynamics, Veldhoven, The Netherlands
Air bearings are special type of bearings which provide nearly zero friction between two surfaces. This is achieved by a compressed layer of gas between the surfaces. This study presents a modeling technique for an Air bearing component. COMSOL Multiphysics® is used to efficiently solve a coupled Fluid-Structure Interaction analysis. Computational time is significantly reduced compared to ...
Kaya, T., Koser, H.
This work focuses on the study of large amplitude, nonlinear deflection dynamics of a piezoelectric accelerometer and aims to determine the material and geometry limitations on the structural integrity of the device. FEMLAB’s multiphysics capabilities are used throughout this FEA study to understand the relationship of the geometry and materials to the resonance modes, large deflection ...
High Coupling Factor Piezoelectric Materials for Bending Actuators: Analytical and Finite Elements Modeling Results
I.A. Ivan, M. Rakotondrabe, and N. Chaillet
FEMTO-ST Institute, University of Franche-Comte, Besançon, France
New giant piezoelectric factor materials such as PMN-PT and PZN-PT were researched during the last decade and are actually becoming commercially available. As they seem very attractive for actuator designs, we studied their potential in replacing PZT ceramics. In a first comparative approach, we tested a series of classic rectangular composite bimorph structures of different combinations of ...
Multiphysics Simulation of Isoelectric Point Separation of Proteins Using Non-Gel Microfluidic System
A. Contractor, N. Xue, J.B.Lee, A. Balasubramanian, and G. Hughes
Lynntech, Inc., College Station, Texas, USA
Micro Nano Devices and Systems (MiNDS) Laboratory, Department of Electrical Engineering, University of Texas at Dallas, Texas, USA
A portable device that can identify protein and peptides real time in complex biological systems such as human bodily fluids reliably and accurately is in high demand to properly diagnose and treat medical conditions. Lynntech has developed an innovative Polydimethylsiloxane (PDMS) based microfluidics system with a unique design utilizing multi-channel inlets and outlets for isoelectric point ...
A. S. Zurkinden1, F. Campanile1, and L. Martinelli2
1Swiss Federal Institute of Technology (ETH), Zürich, Switzerland
2Università di Bologna, Bologna, Italy
This note addresses the concept of wave energy conversion by means of a piezoelectric material. The ocean surface waves represent an important source of energy. A multiphysics simulation is used to focus on different aspects, namely the free surface wave, the fluid-structure interaction, the mechanical energy input to the piezoelectric material and the electric power output, using an equivalent ...