F. De Vita, S. Di Marco, F. Costa, P. Turchi
Altran Italia, Pisa, Italy
This paper will describe some applications of COMSOL Multiphysics to the analysis of Frequency Selective Surface (FSS) structures. Particular attention will be devoted to the possibility of designing a stealthy antenna using the FSS structure. In fact, since it possesses a dual filter concept of frequency and polarization for electromagnetic wave, the Radar Cross Section (RCS) of the antenna is ...
Transient RF Heating of a Conductive Implant: Coupled Electromagnetic/Thermal Simulation and Experimental Validation
A. Leewood, D. Gross, J. Crompton, S. Yushanov, O. Simonetti, Y. Ding
 MED Institute Inc., West Lafayette, IN, USA
 AltaSim Technologies, Columbus, OH, USA
 Ohio State University, Columbus, OH, USA
The purpose of this work was to establish a reliable radio frequency (RF) heating simulation which directly provides transient temperatures for medical devices with high geometric fidelity. These temporal results of localized temperatures can be used to determine conditions for safety of medical devices in the magnetic resonance (MR) environment. Information from this work will directly benefit ...
Analysis and Design of Antennas for an Implantable Medical Device System for Functional Electrical Stimulation
Alfred Mann Foundation for Scientific Research, Valencia, CA, USA
This poster outlines the results of finite element analyses to study the antenna radiation pattern of an implanted medical device. Also presented are simulation results used to design an electrically small antenna for a portable control unit that communicates with the implants over the Medical Micropower Network Frequency Range [413 MHz to 457 MHz]. Alfred Mann Foundation’s Functional ...
I. Terechkine, T. Khabiboulline, D. Sergatskov
Fermi National Accelerator Laboratory, Batavia, IL, USA
Performance degradation of a superconducting RF cavity after quenching in an external magnetic field was calculated using COMSOL. This degradation is due to the increased resistance of a superconducting surface with trapped magnetic flux. The amount of the trapped flux depends on the size of the normally-conducting opening that develops in the superconducting wall of a cavity during quenching. ...
K. M. V. Swamy, B. G. Sheeparamatti, G. R. Prakash
Basaveshwara Engineering Collage, Bagalkot, Karnataka, India
This work presents the study of spiral RF MEMS switch which has low actuation voltage due to spiral structure. This work is inspired by the superior performance of electrostatic RF MEMS switches over the conventional state-of-the-art solid-state devices and the potential applications in communication field. The customary high actuation voltage limits the reliability and applications especially in ...
Deibel, J.A., Wang, K., Escarra, M.D., Mittleman, D.M.
Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA
The terahertz (THz) region of the electromagnetic spectrum (100 GHz to 10 THz) remained relatively unexplored until developments in ultrafast laser technology provided techniques for the generation and detection of THz radiation. Recently, simple metal wires were found to be effective terahertz waveguides that exhibited very low loss and dispersion. The THz radiation propagates along the surface ...
Northwestern University, Evanston, IL, USA
Dye sensitized solar cells (DSSCs) have received tremendous attention as alternative photon harvesting devices. While the sintered TiO2 nanoparticle network attached with dye molecules achieves efficient photon absorption, the electrons have to diffuse through the long TiO2 network to reach the contact, resulting in a high electron density and thus increased recombination. Extensive research ...
S. Maini , A. Marwaha , and S. Marwaha
 Department of Electrical & Instrumentation Engineering, SLIET , Longowal (Deemed University), Punjab
Hyperthermia is newly back in the interest of both, clinical and research oncologists, because of its properties to directly produce permanent damages of the treated tumors and to elicit important immunological responses against cancer cells by changing their immunogenicity. Microwave ablation is used in the treatment of primary and secondary tumors of the liver. Microwave antennas ...
Jason A. Deibel
Electromagnetic waves within the Teraherz frequency spectrum are common in medical techonolgy applications, such as imaging, spectroscopy and drug detection. In this presentation, we explain how Teraherz Radiation is used in different applications, how to produce Electromagnetic waves in the Teraherz frequency, and how to analyze them. Simulations in COMSOL Multiphysics are included as ...
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 ...