Technical Papers and Presentations

Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Quantitative Nanomechanics on Thin Samples with the Atomic Force Microscope

J. P. Müller, and T. E. Schäffer
Institute of Applied Physics
University of Erlangen-Nuremberg
Erlangen, Germany

One method for investigating the mechanical properties of samples like living cells with an Atomic Force Microscope (AFM) is driving force-curves, i.e. measuring the force applied by the tip of the AFM as a function of the indentation into the sample. By fitting a Hertz-model, which predicts the applied force as a function of the indentation depth, one can infer the elastic modulus of the ...

Use of the Finite-Element Method for a Dielectric-Constant Gas-Thermometry Experiment

T. Zandt, C. Gaiser, and B. Fellmuth
Physikalisch-Technische Bundesanstalt (PTB)
Berlin, Germany

The finite-element method (FEM) is a well-established computational methodology for the numerical treatment of partial differential equations. It is primarily used for solving problems in applied engineering and science. In this paper, specific examples are discussed to show how FEM was used for treating problems in temperature metrology, namely primary thermometry applying Dielectric-Constant ...

Matryoshka Locally Resonant Sonic Crystal

D. P. Elford, L. Chalmers, F. V. Kusmartsev, and G. M. Swallowe
Department of Physics
Loughborough University
Loughborough, UK

The results of numerical modelling of sonic crystals with resonant array elements are reported. The acoustic band structure and transmission characteristics of such systems have been computed with the use of finite element methods. An existence of a separate attenuation mechanism associated with the resonant elements, which increases performance in the lower frequency regime has been ...

Multiphysics Modelling of Atmospheric Plasma Jets

S. Kelly, and M. Turner
National Centre for Plasma Science and Technology
Dublin City University
Dublin, Ireland

Fluid model calculations are a useful method to simulate the chemistry rich plasma sources often used in applications of cold atmospheric plasmas. Atmospheric pressure plasma jets provide plasmas that are not spatially bound to any electrode. Typically a plasma is generated internally and then convected to an ambient environment via a gas flow. In this work we outline preliminary models for mass ...

Laser Ablation Modeling of CIGS Solar Cells

S. Grubinskas, and G. Raciukaitis
Center for Physical Sciences and Technology
Vilnius, Lithuania

Structure under consideration was a layered medium consisting of various materials depending on the specific solar cell. Three processes are considered: energy coupling by electrons taking into account interference effects between the layers, energy transfer from electrons to the lattice using a two-temperature model for heat dissipation and phase transitions in materials. Incident ...

Modelling degradation phenomena in PEM fuel cells using Comsol Multiphysics

J. Ohs
R&D, Robert Bosch GmbH

Jan Ohs graduated in mechanical engineering at RWTH Aachen, Germany. In 2006/07, he studied at Imperial College London at the Department of Chemical Engineering and had first contact to fuel cells. Since 2008, he has been working in the R&D-department at Bosch in Stuttgart. He is using Comsol for modelling work on fuel cells for automotive application. The main focus is cell degradation.

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