We report the use of Heat transfer Module of COMSOL multiphysics and a technique based on Infrared Photothermal Radiometry to study the heat transfer of a homogeneous and isotropic solid material excited by a periodic laser beam on the front side of the sample, and an infrared detector on the rear side in order to obtain the evolution of the temperature difference with the exposure time. Also, ...

This master thesis focused on optimizing the outlet geometry of microcolumn chips and how the chips are assembled in a miniaturized gas analysis system based on the principles of gas chromatography. The theory and literature of gas chromatography at microscales was studied and consequently several outlet designs were simulated with COMSOL Multiphysics®. Their theoretical velocity profiles were ...

MEMS Accelerometer, the new inventions which revolutionized the technical world. Now, it’s time for the self assistive accelerometers. In this paper, we have designed the trampoline, annular diaphragm structured piezoelectric accelerometers using PZT-5H with COMSOL Multiphysics software tool for providing low transverse sensitivity along one axis and good temperature stability. These accelerome...

The existing lithium ion battery model in Multiphysics (MP) software (COMSOL Inc., Palo Alto, CA) is extended to include the thermal effects. The thermal behavior of a lithium ion battery is studied during the galvanostatic discharge process with and without a pulse. ccepted 8 March 2011 vailable online 15 March 2011 eywords: ithium ion battery hermal model © 2011 Elsevier B.V. All rights reser...

This paper propose a new design and analysis of MEMS sensor array based on thermal stress and electric current properties. The COMSOL Multiphysics 4.3 software is used to design the sensor array of the sensing layer. The material selection is done based on the thermal analysis of the sensor array. The polysilicon yield a maximum displacement of 0.00143μm and also it is suitable for human skin. ...

Micromagnetic simulation is a numerical method to solve the Landau–Lifshitz–Gilbert (LLG) equation for magnetic dynamics. Most of mainstream micromagnetic packages, including object oriented framework and MuMax3, perform in time domain. Here, utilizing frequency domain capability COMSOL Multiphysics, we developed COMSOL-based module that solves LLG domain, which runs much faster more accurate t...

In this study, the design and analysis of micro beam is carried out using COMSOL multiphysics. The current passing through distributes heat energy due to its resistance that pushes entire desired distance thermal expansion. This expansion varies depending on amount emitted temperature. purpose model created estimate temperature increase required cause displacement in proposed software. addition...

In the study, the activation propagation velocity in cardiac tissue was simulated in COMSOL Multiphysics environment using the modified FitzHugh-Nagumo model of the electrical excitation. The influence of different model parameters and stimulation conditions on the activation propagation velocity was evaluated. The homogeneous slab model was used as the model of the atrial wall. Results of simu...