Presentazioni e Articoli Tecnici

In questa sezione troverete i lavori presentati alle Conferenze mondiali COMSOL. Le presentazioni descrivono ricerche e prodotti innovativi progettati con COMSOL Multiphysics da colleghi di tutto il mondo. I temi delle ricerche presentate abbracciano un'ampia gamma di settori produttivi e aree applicative, in ambito elettrico, meccanico, fluidodinamico e chimico. Lo strumento di Ricerca Rapida vi permetterà di trovare le presentazioni che si riferiscono all'area di vostro interesse.

Analyzing the Performance of Lined and Unlined Simplified Cylindrical Cloaks

J. McGuirk and P. Collins
Air Force Institute of Technology, WPAFB, OH, USA

The performance of simplified cylindrical cloaks with various material parameters was investigated. The performance metric was the overall scattering width of the cloak with various objects in the hidden region. COMSOL was used to simulate three cloaks with different material parameters to determine the total field in the simulation domain. For all cloaks simulated in this effort, a PEC-lined ...

Modeling transport in silicon nanocrystal structure

Leroy, Y., Leriche, B., Cordan, A.S.
InESS — ENSPS, UMR 7163, ILLKIRCH, France

We present in this paper a model to study new memory devices with embedded nanocrystals, emerging in microelectronics. The theoretical calculations and their implementation in FEMLAB are detailed, leading to a quite simple and realistic model. One key point for these memories is the electronic tunnel transfer to store the charge into a nanocrystal. This is why we carry out a brief analysis of ...

Accurate Parameters Extraction of Multiconductor Transmission Lines in Multilayer Dielectric Media

S. Musa[1], M. Sadiku[1], and O. Momoh[2]
[1]Roy G. Perry College of Engineering, Prairie View A&M University, Prairie View, TX
[2]Indiana University-Purdue University

Development of very high speed integrated circuits is currently of great interest for today\'s technologies. This paper presents the quasi-TEM approach for the accurate parameters extraction of multiconductor transmission lines interconnect in single, two, and three-layered dielectric regions using the finite element method (FEM). We illustrate that FEM is accurate and effective for modeling ...

Reconstruction for Interstitial Diffuse Optical Tomography (iDOT) for Human Prostate

X. Liang, K. Kang-Hsin Wang, and T. Zhu
University of Pennsylvania
Philadelphia, PA

Determination of tissue optical properties distributions is very important for determining light fluence distribution during photodynamic therapy (PDT). In this study, an interstitial diffuse optical tomography (iDOT) system was used to characterize the spatial distribution of optical properties for a series of mathematical phantoms as well as verification measurements in a prostate ...

Modeling Mechanical Deformation and Optical Waveguiding Properties of Ion-Implanted Diamond

F. Bosia[1], P. Olivero[2], and E. Vittone[2]
[1]Dipartimento di Fisica Teorica, Università di Torino, Torino, Italy
[2]Dipartimento di Fisica Sperimentale, Università di Torino, Torino, Italy

Ion implantation in insulating materials leads to local variations in mechanical and optical properties that can be exploited for the fabrication of micro-structures. In particular, ion irradiation of diamond causes the formation of buried amorphised layers, with correspondent mass density and refractive index variations that depend on the level of “damage” of the crystal structure. ...

Impulsive Thermomechanics of hypersonic surface phononic crystals

F. Banfi[1], D. Nardi[2], and M. Travagliati[3]
[1]Dipartimento Matematica e Fisica, Università Cattolica, Brescia, Italy
[2]JILA, University of Colorado at Boulder, Boulder, Colorado, United States
[3]Center for Nanotechnology Innovation @NEST, Istituto Italiano di Tecnologia, Pisa, Italy

Ultrafast optical generation of pseudosurface acoustic waves is investigated in hypersonic surface phononic crystals. The thermomechanics is modeled from first-principles to follow the initial impulsive heat-driven displacement in the time domain. Spectral decomposition of the displacement over the surface phononic crystal eigenmodes outlines asymmetric resonances featuring the coupling between ...

Excitation, Propagation, and Focusing of Surface Plasmon Polaritons around A Pair of Subwavelength Holes on Silver Thin Film

Y. Oshikane
Osaka University, Osaka, Japan

Simulation results regarding excitation, propagation, and focusing of SPP waves around a pair of subwavelength holes on silver thin film by COMSOL Multiphysics + RF Module are presented. This research has been performed for development of a novel tiny spot of extremely intensified optical near-field at the apex of optical fiber probe for scanning near-field optical microscope.

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