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.


View the COMSOL Conference 2023 Collection

Optics, Photonics and Semiconductorsx

Modeling of Avalanche Breakdown in Silicon and Gallium Nitride High-Voltage Diodes using COMSOL®

J. R. Dickerson [1], G. W. Pickrell [1], R. J. Kaplar [1],
[1] Sandia National Laboratories, Albuquerque, NM, USA

For high-power semiconductor devices to function correctly, it is imperative to manage the electric fields inside of the device. This is typically done using an edge termination scheme such as guard rings or junction termination extensions. Edge terminations are used to spread localized ... Read More

Generation of Divergence-Free Bessel-Gauss Beam from an Axicon Doublet for km-Long Collimated Laser

C. Daengngam [1], S. Boonsit [1], P. Kalasuwan [1], P. van Dommelen [1], P. Srisamran [1],
[1] Department of Physics, Faculty of Science, Prince of Songkla University, Songkhla, Thailand

A well-collimated intensity profile at long distance has long been a desired laser property crucial for many potential applications. Extending a non-diverging range for ordinary laser beyond kilometers scale would permit superior performance for optical technologies, including LIDAR, or ... Read More

Emission Characteristics of Solid State Color Centers Coupled to Plasmonic Antennae and Waveguides

M. Y. Shalaginov [1], S. Bogdanov [2], A. V. Kildishev [2],
[1] Massachusetts Institute of Technology, Cambridge, MA, USA
[2] Purdue University, West Lafayette, IN, USA

Recently a lot of research efforts have been focused on using plasmonics and nanophotonic structures for enhancing emission processes ranging from lasing to single-photon generation. The design of such structures heavily relies on the insight obtained from numerical simulations. In this ... Read More

CdS Thin Film Transistor Threshold Voltage Shift Investigation

W. Wondmagegn [1],
[1] Frostburg State University, Frostburg, MD, USA

A threshold voltage shift of CdS Thin Film Transistor is studied using the COMSOL Multiphysics® software's Semiconductor Module. Drift-diffusion (DD) simulation model is used in which the basic equations used are similar to those used for a single-crystal device except that traps and ... Read More

Optical Monitoring Method of Sessile Droplet Evaporation

V. Tishkova [1], R. Grossier [1], S. Veesler [1],
[1] Aix Marseille Univ, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Marseille, France

Nano and pico-litre sessile droplet are of large interest in many areas including pharmaceutical and biomedical applications. In particularly it can be used for drug delivery, protein testing or to control nucleation in confined environment. Industrial and research use of such methods ... Read More

A Novel Free-standing Evanescent Waveguide for Sensing

X. Meng [1], Y. Xin [1], P. French [1],
[1] Department of Microelectronics, Delft University of Technology, Delft, Netherland

Introduction The monitoring of bacteria concentration in drain fluid is the most common way to estimate the success of a colon surgery. However, the lack of efficient method to follow the development of E.coli in drain fluid after surgery is often fatal to the patient. The proposed ... Read More

CMOS Based Atom Chips for Sensor Applications

Ph. Neuman [1], A. Nemecek [1], C. Koller [2]
[1] Department for Micro-and Nanosystems, University of Applied Sciences Wiener Neustadt, Austria
[2] Department for Micro-and Nanosystems, University of Applied Sciences Wiener Neustadt, Austria, and School of Physics and Astronomy, University of Nottingham, Nottingham, UK

Ultra-cold atomic systems have proven over the last decade to be a excellent platform for the realization of quantum sensors, quantum computation or quantum simulation applications. A special implementation of this technology is the so called atom chip, where the magnetic fields ... Read More

Coupled Optical & Thermal Model of a Silicon Microprobe

Cs. Ö. Boros [1], Sz. Beleznai [1], P. Koppa [1], Z. Fekete [2], Á. Cs. Horváth [3]
[1] Department of Atomic Physics, Budapest University of Technology and Economics, Budapest, Hungary
[2] MTA EK NAP B Research Group for Implantable Microsystems, Budapest, Hungary
[3] Óbuda University Doctoral School of Material Science & Technology, Budapest, Hungary

The topic of my work is modeling of a multimodal waveguide microprobe which is suitable for deep brain infrared stimulation. The goal of the research is the investigation of the therapeutic effect of optical IR excitation on biological active substances. In the physical model I ... Read More

COMSOL Multiphysics® Simulations to Study Nonlocal Properties of a Au Nanoshell Using Quantum Hydrodynamic Theory

M. Khalid [1], C. Ciracì [1],
[1] Center for Biomolecular Nanotechnologies, Istituto Italiano di Tecnologia, Arnesano, Italy

Quantum Hydrodynamic Theory (QHT) provides an excellent method to study both near-field and far-field properties of multiscale plasmonic systems, especially for systems whose sizes make it computationally prohibitive for the density functional theory approach [1]. The microscopic ... Read More

Predictive Model for UV Light Irradiation and PCO Reaction Kinetics in a Photocatalytic Reactor

S. Denys [1], J. Roegiers [1], J. van Walsem [1],
[1] University of Antwerp, Antwerp, Belgium

A novel type of photocatalytic reactor, i.e. parallel flow tube reactor (PFTR) is presented for the degradation of indoor air pollution with UV-light. A Multiphysics model was developed in COMSOL Multiphysics® to predict the steady-state behavior under different inlet concentrations and ... Read More