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.

Super-resolving Properties of Metallodielectric Stacks

N. Katte[1], J. Haus[1], J.B. Serushema[1], and M. Scalora[2]
[1]University of Dayton, Dayton, OH, USA
[2]Charles M. Bowden Research Center, Redstone Arsenal, AL, USA

We show that diffraction can be suppressed in a one-dimensional metallodielectric stack (MDS) at visible wavelengths to achieve super-resolution imaging. In our calculations we use two popular techniques, which can be adapted to investigate the imaging properties of MDSs. The two methods are the transfer matrix method (TMM) and the Finite element method based software, COMSOL Multiphysics. The ...

Finite element simulation for electronics

Y. Mizuyama
Panasonic Boston Laboratory, Newton, MA, USA

Dr. Yosuke Mizuyama is a Lead Engineer at Panasonic Boston Laboratory. He has been working on various electronics for Panasonic Corporation in Japan for many years. His research includes incandescent/fluorescent lamp, electrostatic/pzt inkjet, MEMS and BD/DVD/CD optical drive. His current interest is electromagnetic simulation for laser and optics. He has been engaged in numerical analysis using ...

Fibre-Optic Microsensor Based on Surface Plasmon Resonance in a Microfluidic Cell : An Experimental and Numerical Multiphysics Approach

G. Louarn, T. Makiabadi, V. Le Nader, and M. Kanso
Institut des Matériaux Jean-Rouxel (IMN), CNRS- Université de Nantes, France

In the last decade, the surface plasmon resonance (SPR) has become a very sensitive technique for real-time detection in many application areas. Considering the fiber optic concept and the important needs for analyzing biomolecular reactions through automated and miniaturized components, fiber optic sensors based on the SPR technique are becoming an important choice in the field of sensing. In ...

Numerical Modeling Of Thin Superconducting Tapes

F. Grilli[1], F. Sirois[2], and R. Brambilla[3]
[1]Karlsruhe Institute of Technology, Karlsruhe, Germany
[2]Ecole Polytechnique de Montréal, Montréal, Canada
[3]ERSE SpA, Milan, Italy

Second-generation high-temperature superconducting (HTS) tapes are very promising superconductors for ac applications and numerical models are very important for predicting their performance, e.g. for computing the ac losses. These tapes are characterized by a very large aspect ratio: the width of the superconducting film is typically between 4 and 12 mm, whereas its thickness is in the ...

Impact of Velocity and Interfacial Tension on the Performance of Horizontal Wells in Gas Condensate Reservoirs

P. Ghahri, M. Jamiolahmady, and M. Sohrabi
Heriot Watt University, Edinburgh, United Kingdom

Drilling horizontal wells (HWs) has recently received renewed attentions with the increasing trend in exploitation of tight gas reservoirs. An accurate estimation of productivity of such systems using a numerical simulator is a challenging task, because its 3D simulation requires a fine grid exercise to capture the abrupt variation of fluid and flow parameters around the wellbore. This is ...

Modelling and Simulation of Simultaneous Intrinsic Kinetics, Hydrogen Transport and Heat Transfer in Complex Hydride Hydrogen Storage Systems

G. A. Lozano, J. M. Bellosta von Colbe, T. Klassen, and M. Dornheim
Institute of Materials Research
Materials Technology
Helmholzt-Zentrum Geesthacht
Geesthacht, Germany

In proper designs of hydrogen storage systems based on metal hydrides three processes are modelled and simulated: hydrogen flow (through the metal hydride bed), solid-state chemical transformation, and heat transfer (due to the highly exothermic chemical transformation). In this work, modelling and simulation of the hydrogenation in complex hydride tanks is performed using COMSOL, case study is ...

Electrophoresis and Electroosmosis in the Intracellular Transport of Macromolecules

V. Andreev
University of Miami
Miami, FL

Electric fields are present in biological systems at multiple spatial and temporal scales. Electroosmotic flow results from the action of electric field on the electrical double layer, formed at the fluid/solid or fluid/membrane interface and characterized by its zeta-potential. For the physiological value of zeta-potential (50 mV) and a single charged protein of average size, electroosmotic ...

Ventilation System of a Microwave Assisted Drying Kiln

A.-G. Ghiaus[1], M.-A. Istrate[1], A. Georgescu[1]
[1]Technical University of Civil Engineering, Bucharest, Romania

The paper presents the analysis and optimization of the ventilation system inside of a drying lumber kiln. As with any part of the manufacturing process, improper drying techniques cause quality degradation and considerable amount of energy loose. The improvement and optimization of air distribution systems in drying kilns contributes to the preservation of the wood quality. The performance of ...

3D Stationary and Temporal Electro-Thermal Simulations of Metal Oxide Gas Sensor Based on a High Temperature and Low Power Consumption Micro-Heater Structure

N. Dufour[1], C. Wartelle[2], P. Menini[1]
[1]LAAS-CNRS, Toulouse, France
[2]Renault, Guyancourt, France

The aim of this work was to simulate the electro-thermal behavior of a micro-hotplate used as a gas sensor, in order to compare the obtained results with a real structure. The structure has been designed in 3D and a stationary and a temporal study has been realized.

COMSOL Multiphysics Super Resolution Analysis of a Spherical Geodesic Waveguide Suitable for Manufacturing

H. Ahmadpanahi[1], D. Grabovi?ki?[1], J.C. González[1], P. Benítez[1], J.C. Miñano[1]
[1]Cedint Universidad Politécnica de Madrid, Madrid, Spain

Recently it has been proved theoretically (Miñano et al, 2011) that the super-resolution up to ? /500 can be achieved using an ideal metallic Spherical Geodesic Waveguide (SGW). This SGW is as a theoretical design, in which the conductive walls are considered to be lossless conductors with zero thickness. In this paper, we study some key parameters that might influence the super resolution ...

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