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See How Multiphysics Simulation Is Used in Research and Development

Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.

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Numerical Simulation of Thermal Runaway in a THz GaAs Photoconductor

S. Sarodia[1,2], W. Zhang[2], E. Brown[2]
[1]Centerville High School, Dayton, OH, USA
[2]Wright State University, Dayton, OH, USA

Ultrafast terahertz photoconductor devices, especially photomixers, are usually limited in output power by device failure thought to be caused by excessive temperatures. Therefore, understanding of thermal breakdown is essential to the study of device reliability and failure of ... Read More

$Modeling Light Diffraction Using the Finite Element COMSOL$

Modeling Light Diffraction Using the Finite Element COMSOL

J.D. Bamonte
U.S. Naval Academy, Annapolis, MD, USA

COMSOL is finite element modeling software capable of solving partial differential equations. This capability allows for the modeling of boundary value problems, which is necessary to the study of light and the properties of light propagation. For this study, we are modeling Fraunhofer ... Read More

Model and Simulation of a Tunable Birefringent Fiber Using Capillaries Filled with Liquid Ethanol

C. Zeringue, and G.T. Moore
Air Force Research Laboratory, Kirtland Air Force Base, NM, USA

Conventional polarization maintaining fiber is constructed using a pair of borosilicate rods on either side of the fiber core. Current manufacturing processes prohibit the construction of fibers with the required accuracy needed for applications requiring precision birefringence. Through ... Read More

Modeling of Resonant Optical Trapping in a 2D Photonic Crystal Cavity

U.P. Dharanipathy[1], N. Descharmes[1], Z. Diao[1], M. Tonin[1], R. Houdré[1]
[1]Institut de Physique de la Matière Condensée, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland

Photonic crystals (PhC) are optical nanostructures that are widely known for their strong spatial and temporal confinement of electromagnetic radiation. Here, we study the resonant optical trapping of a single nanoparticle within a hollow circular photonic crystal cavity. The ... Read More

High Frequency Resonators Using Exotic Nanomaterials

B. Panchapakesan[1], M. Loeian[1]
[1]Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, MA, USA

Human made mechanical resonators have been around for a thousand years. Early applications included musical instruments and chronographs operating in millihertz to kilohertz frequencies while more recent interest has turned ultra-high frequency resonators and oscillators suitable for ... Read More

Use of Simulation in the Development of Next-generation Measurement Standards for Radiation Dosimetry

R. E. Tosh[1], H. Chen-Mayer[1]
[1]NIST, Gaithersburg, MD, USA

Calibration of field instruments used in radiation treatment clinics is currently traceable to NIST primary standards via protocols involving static, flat-field radiation beams. By contrast, radiation beams prescribed for treating cancer incorporate temporal and spatial modulation ... Read More

Drift-Diffusion and Ballistic Transport Modeling in III-Nitride Multiple-QW Light Emitting Structures

M.V. Kisin, and H.S. El-Ghoroury
Ostendo Technologies Inc., Carlsbad, CA, USA

COMSOL-based modeling software developed at Ostendo Technologies allows detailed simulation of semiconductor lasers and light-emitting diodes. In this work, we study the inhomogeneity of the carrier injection into optically active quantum wells of polar and nonpolar III-nitride light ... Read More

Single-Phase Modeling in Microchannel with Piranha Pin Fin

X. Yu [1], C. Woodcock [1], Y. Peles [2], J. Plawsky [1],
[1] Rensselaer Polytechnic Institute, Troy, NY, USA
[2] University of Central Florida, Orlando, FL, USA

Microchannel has shown potential to dissipate high heat flux in past years [1][2]. At the same time, liquid cooling attracts more and more attention from researchers for its favorable thermal properties and ability to cool down hot and keep acceptable system temperature [3][4][5]. This ... Read More

Antenna and Plasmonic Properties of Scanning Probe Tips at Optical and Terahertz Regimes

A. Haidary[1], P. Grütter[1], Y. Miyahara[1]
[1]Physics Department, McGill University, Montreal, QC, Canada

A wide variety of near-field optical phenomena such as apertureless near-field scanning microscopy (ANSM) at optical and terahertz (THz) regimes and surface enhanced Raman scattering relies on the electric field enhancement at the end of a sharp tip. Achieving and controlling this ... Read More

Advancing Regulatory Science through Integrative Engineering with COMSOL Multiphysics® Software Modeling

G. Zhang [1]
[1] Department of Bioengineering, Institute for Biological Interfaces of Engineering, Clemson University, Clemson, SC, USA

The US Food and Drug Administration (FDA) faces significant challenges in its regulatory approval processes due to a lack of relevant science, and many practices are limited by laws enacted in the previous century [1]. Therefore, in recent years, the FDA has identified the need for ... Read More

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