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Voyez comment la modélisation et la simulation sont utilisées par les industries La modélisation et la simulation multiphysiques pilotent l'innovation dans tous les grands secteurs d'activité et dans le monde universitaire — comme en témoignent les nombreuses utilisations présentées dans des articles et des posters techniques présentés par des ingénieurs, chercheurs et scientifiques à la Conférence COMSOL chaque année. Inspirez-vous des récents proceedings réunis ci-dessous, ou, pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt, utilisez la recherche rapide.

Consultez les proceedings de la Conference COMSOL 2024

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Excimer Laser-Annealing of Amorphous Silicon Layers

J. Förster, and H. Vogt
Institute of Electronic Components and Circuits
University Duisburg-Essen
Duisburg, Germany

A one-dimensional model of Excimer Laser-Annealing of amorphous silicon layers which are irradiated with a KrF excimer laser is described. For realisation, the application mode heat transfer in solids is used. The model predicts a melt threshold for the energy density of the laser of 88 ... En savoir plus

A Study on Hydrodynamics of Melt Expulsion in Pulsed Nd: YAG Laser Drilling of Titanium

S. Sharma [1], Y. Pachuary [2], S. N. Akhtar [3], J. Ramkumar [1],
[1] Indian Institute of Technology Kanpur, Kanpur, India
[2] Indian Institute of Information Technology, Design and Manufacturing, Jabalpur, India
[3] Integral University, Lucknow, India

Laser drilling of titanium and its alloys is widely used in aerospace industry, as it offers selective removal of material at high accuracy and speed. However, laser drilling often inherits defects such as large heat affected zone, micro cracks and recast layer. These defects depend upon ... En savoir plus

Analyzing the interplay between strain, temperature and optical response in GeSn micro-structures

Costanza Lucia Manganelli¹, Meera¹, I. Zaitsev¹
¹IHP - Leibniz Institute for High Performance Microelectronics

Germanium-tin (Ge₁₋ₓSnₓ) microdisks are emerging as a promising platform for CMOS-compatible group-IV light sources due to their tunable direct bandgap and compatibility with silicon photonics. Their optical and electronic properties are critically influenced by tin concentration, strain ... En savoir plus

Temperature Measurements of a Single Gold Nanoparticle under Laser Illumination

Kenji SETOURA et al.[1]

[1]The University of Tokushima, Tokushima, Tokushima, Japan

Temperature measurement of nanoparticles (NPs) under heating is an important technique in order to achieve potential applications such as photothermal cancer therapy and nanofabrication. We implemented the method to estimate the local temperature of a laser-heated gold NP on glass ... En savoir plus

Modeling of Laser Processing For Advanced Silicon Solar Cells

G. Poulain[1], D. Blanc[1], A. Kaminski[1], B. Semmache[2], and M. Lemiti[1]
[1]Université de Lyon: Institut des Nanotechnologies de Lyon INL, CNRS, INSA de Lyon, Villeurbanne, France
[2]SEMCO Eng., Montpellier Cedex 5 - France

Silicon solar cells still require cost reduction and improved efficiency to become more competitive. New architectures can provide a significant increase in efficiency, but today most of the approaches need additional processing steps. In this context, laser processing offers a unique ... En savoir plus

FEM Analysis of Laser-Induced Heating of Gold Nanoparticles

D. Gonzalez[1], J. Gardner[1], and O. Tigli[2]
[1]Biomedical Engineering, University of Miami, Coral Gables, FL,
[2]Electrical and Computer Engineering, University of Miami, Coral Gables, FL

Nanoparticles are being extensively researched as a noninvasive method for selectively targeting and killing cancer cells. In this study, we model the thermal activation of gold nanospheres and nanorods in a fluidic environment to determine the thermal response of the surrounding medium. En savoir plus

Formation of Porosities During Spot Laser Welding of Tantalum

C. Touvrey[1], and P. Namy[2]
[1]CEA Valduc, France
[2]SIMTEC, France

The aim of the study is to predict the formation of porosities in the case of spot laser welding of tantalum. During the interaction, a deep and narrow cavity, called the keyhole, is generated. At the end of the interaction, surface tension provokes the collapse of the keyhole. Gas ... En savoir plus

Early Stage Melt Ejection in Laser Percussion Drilling

T. Eppes[1]
[1]University of Hartford, Hartford, CT, USA

Laser percussion drilling is widely used in the aerospace industry to produce cooling holes in jet engine components. This process is a thermal, contact-free process which involves firing a sequence of focused optical pulses onto a target material [1-4]. During each optical pulse, the ... En savoir plus

Laser Activated Gold Nanorods for the Photothermal Treatment of Cancer

F. Rossi[1], F. Ratto[1]
[1]CNR - Institute of Applied Physics "Nello Carrara", Sesto Fiorentino, Italy

Photothermal therapy through Gold Nanorods (GNRs) is a new approach for the minimally invasive treatment of cancerous tissue. In order to design the proper settings, it is important to study the thermal effect that are induced close to the nanoparticle (nanoscale model), in the close ... En savoir plus

Magnetic Devices For a Beam Energy Recovery THz Free Electron Laser

R. R. S. Caetano[1], G. Cernicchiaro[2], R. M. O. Galvão[3]
[1]Universidade Federal do Rio de Janeiro, Macaé, RJ, Brazil
[2]Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, RJ, Brazil
[3]Instituto de Física USP, São Paulo, SP, Brazil

This paper presents a numerical analysis of magnetic devices, dipole, quadrupole and undulator and a THz Free Electron Laser (FEL) electron-beam recovery system. Free Electron Laser are an important source of coherent radiation being used in the study of chemical properties of ... En savoir plus

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