Modeling of III-Nitride Quantum Wells with Arbitrary Crystallographic Orientation for Nitride-Based Photonics
M. Kisin, R. Brown, and H. El-Ghoroury
Ostendo Technologies, Inc., Carlsbad, CA, USA
A program for self-consistent modeling of electron-hole energy spectrum and space-charge distribution in III-nitride based quantum well (QW) structures has been developed. The model takes into consideration full 6-band description of the valence band states, nonparabolicity of the electron spectrum, quantum confinement of electrons and holes, strain induced modifications of the band structure, ...
M. Zalesak, and V. Gerlich
Tomas Bata University in Zlin, Zlin, Czech Republic
The study presents first authors experience with COMSOL Multiphysics environment used as a possible modeling tool of thermal building behavior. The idea of the project was to gain thermal response to changed boundary conditions with the application of COMSOL environment as a modeling tool for 3D buildings or 3D building segments. The room as building segment was implemented in the COMSOL ...
P. Fodor, and J. D'Alessandro
Dept. of Physics
Cleveland State University
In this work a miniaturized fuel cell design based on microchannels, into which the liquid fuel and oxidizer streams are fed through T shaped connectors, is optimized for improved fuel usage. This particular design exploits the laminar nature of the fluid flow at small Reynolds numbers to keep the fuel and oxidizer confined in the vicinity of the corresponding electrodes without the need of a ...
Piezoelectric Transducers and Ultrasound Imaging: Impact of Materials Properties and Multiphysics Aided Design
Marco Cati graduated cum laude and encomium citation in electronic engineering in 2001 from the University of Florence, where in 2005 he also received a Ph. D. degree in electronic engineering. In 2005 he joined the Research & Development Department of Esaote where he is currently in charge of electromagnetic compatibility (EMC) design and testing activities on ultrasound and magnetic resonance ...
S.F. Neves, J.J.B.L.M. Campos, T.S. Mayor
CEFT – Transport Phenomena Research Center, Chemical Engineering Department, Porto University, Porto, Portugal
CeNTI - Centre for Nanotechology and Smart Materials, Rua Fernando Mesquita, Vila Nova de Famalicão, Portugal
A clothing system should offer the user a period of relatively comfort. However, changes in the ambient conditions over day affect the heat and mass transport in the system, influencing the user comfort perception. In order to gather information to allow the optimization of clothing systems, it is essential to understand the heat and moisture transfer occurring across multi-layer textiles. For ...
M. Hassan, I. Gonin, T. Khabiboulline, V. Yakovlev
Fermi National Accelerator Laboratory, Batavia, IL, USA
Normal conducting cavities are typically used in the front end of proton accelerators to get the beam accelerated to velocities approximately a few tenths of the speed of light, where superconducting cavities can then be used to accelerate the beam to the speed of light. The warm part of a typical proton accelerator would contain a radio frequency quadrupole (RFQ) and several buncher cavities. ...
T. Satyanarayana, V. Sai Pavan Rajesh
NPMASS Centre, Lakireddy Bali Reddy Autonomous Engineering College, Mylavaram, Andhra Pradesh, India
Lakireddy Bali Reddy Autonomous Engineering College, Mylavaram, Andhra Pradesh, India
The most commonly used type of resonator is the AT-cut, where the quartz blank is in the form of a thin plate cut at an angle to the optic axis of the crystal. This paper reports the modeling of a quartz oscillator for a resonant frequency analysis based on piezoelectric effects. The proposed oscillator consists of a single quartz disc with two electrodes on the top and bottom surfaces of the ...
Koduri V.V.N.R.M Manohar Prasad, John Yan, Andrew A.Bettiol, K.C James Raju
University of Hyderabad, Hyderabad, Andhra Pradesh, India
National University of Singapore, Singapore
The nematode Caenorhabditis elegans is a widely adopted model organism for studying various neurobiological processes at the molecular and cellular level in vivo. With a small, flexible, and continuously moving body, the manipulation of C.elegans becomes a challenging task. A lab-on-a-chip (LOC),is a device that integrates one or several laboratory functions on a single chip of only mm to a few ...
Numerical Simulation for Landfill Stabilization Process considering Degradation of Organic Chemical Compounds in Waste
Ritsumeikan University, Kyoto, Kyoto, Japan
This presentation describes the numerical simulation model where gas/liquid two-phase porous media flow equations are coupled to multicomponent gas-phase transport and water-phase transport equations in COMSOL Multiphysics. This is done in order to predict the landfill stabilization process considering degradation of organic chemical compounds in waste.
A. Warning, A. K. Datta
Department of Biological & Environmental Engineering, Cornell University, Ithaca, NY, USA
Predictive food microbiology currently first requires experimental data for growth on fresh produce and then fitting an empirical or semi-empirical model to the data, making extrapolation to other conditions (temperature, type of produce) difficult. Herein, we develop a mechanistic model for the growth of human pathogenic bacteria (Escherichia coli O157:H7 and Salmonella spp.) on spinach using ...