X. Yang1, and G. Zhang1,2
1Micro/Nano Bioengineering Laboratory, Faculty of Engineering, The University of Georgia, Athens, GA, USA
2Nanoscale Science and Engineering Center, Faculty of Engineering, The University of Georgia, Athens, GA, USA
To explore the use of nanometer-scale interdigitated electrodes (IDEs) in affinity-based biosensors, we investigated the voltammetric behavior of interdigitated electrodes (IDEs) at various electron-transfer-rate constants (i.e., the k0 values) with the consideration of electrical double layer (EDL), and the relationship between the limiting current density and k0 value. Results show that the ...
Q. Li, and S. Seelecke
Department of Mechanical & Aerospace Engineering, North Carolina State University, Raleigh, NC, USA
This presentation deals with a Thermomechanical coupled analysis of a Shape Memory wire actuator. The outline for the Shape Memory Alloy model is:Motivation - Multiple scales and materialsMicro-scale mechanismsMeso-scale lattice elementsMacro-scale elementFree energy conceptUnified approach to various active materials(SMA, PZT, FSMA, etc.)Mathematical modelStatistical thermodynamicsThermally ...
Energy Exchange During Electron Emission from Carbon Nanotubes: Considerations on Tip Cooling Effect and Destruction of the Emitter
M. Dionne, S. Coulombe, and J. Meunier
Department of Chemical Engineering, McGill University, Montreal, Quebec, Canada
Murphy and Good general theory for electron emission from metal surfaces was used to predict the field-emission capabilities of ideal arrays of vertically aligned carbon nanotubes (VACNT). The Nottingham effect was taken into account in order to explain experimental observation of a localized cooling of the VACNT tips during field emission and the total destruction of very short emitters at ...
M. Benilov, and M. Faria
Departamento de Física, Universidade da Madeira, Funchal, Portugal
Current transfer from high-pressure arc plasmas to thermionic cathodes may occur in a diffuse mode, when the current is distributed over the front surface of the cathode, or in a spot mode, when most of the current is localized in one or more small areas. Spectra of perturbations of 3D steady-state current transfer to thermionic cathodes of a high-pressure argon arc have been computed in the ...
Vanderbilt University, Nashville, TN, USA
Carbon nanotube FETs are generating much interest in the nanoscale electronics area. Typically subthreshold behavior in these devices has been modeled using the Laplace equation. Above threshold behavior uses self-consistent solutions to the Poisson and continuity equations. Accurate modeling of Carbon nanotube FETs needs to include quantum effects such as tunneling. Owing to the coupled nature ...
Electro-Thermal Analysis of a Contactor: Comparing the Performance of Two Braze Alloys during the Temperature Rise Test
E. Gutierrez-Miravete, and G. Contreras
Rensselaer at Hartford, Hartford, CT, USA
General Electric Co., Plainville, CT, USA
The purpose of this study was to develop mathematical models of the coupled electro-thermal process in selected, typical contactors that could then be validated and verified by comparing model predictions with the results of previous studies and with experimental data obtained during a temperature rise test. The study employed Finite Element Analysis using COMSOL to simulate coupled ...
J. Maneerote, and P.S. Takhar
International Center for Food Industry Excellence Texas Tech University, Lubbock, TX, USA
Microscale comprised of the scale of food biopolymers at which biochemical reactions and textural changes take place, and the macroscale was the scale of interaction of polymers with surrounding water, vapor and oil phases. Numerous novel equations such as generalized Darcy’s law based fluid transport equations for various phases; near-equilibrium equation governing phase change from liquid ...
Design and Development of Microsystems within a Corporate Research Environment by Utilizing Comsol Multiphysics
Corporate Research & Technologies
Alexander Frey received his M.A. degree from the University of Texas, Austin, in 1994, the Dipl. Phys. degree from the University of Wuerzburg, Germany in 1997 and the PhD from the Saarland University, Germany in 2010. In 1997 he joined Research Laboratories of Siemens working on the design of DRAM sensing circuits. In 1999 he joined Corporate Research, Infineon, Munich, Germany. He was engaged ...
Laminar Fluid Flow and Heat Transfer Studies of an Electrical Conducting Fluid Subject to Combined Electric and Magnetic Fields
E. Gutierrez-Miravete, T. DePuy, and X. Xie
Rensselaer at Hartford, Hartford, CT
Pratt & Whitney, East Hartford, CT
The flow of electrically conducting fluids such as liquid metals is significantly affected by applied electric and magnetic fields. The effect has important industrial applications in metallurgy, nuclear technology and other fields. This paper described results of a series of studies designed to investigate the capabilities of COMSOL Multiphysics to accurately simulate the steady laminar flow ...
R. Prakash, K. M. V. Swamy, and B. G. Sheeparamatti
Basaveshwara Engineering College
MEMS(Microelectromechanical systems) based energy harvesting is process of extracting energy from natural resources in small amounts. Here, number of (millions) small energy harvesting modules lead to substancial energy. In this design, a piezoelectric material is used to scavenge energy from natural resources like radioactive source. COMSOL Multiphysics is used to model and simulate a ...