Consultez les proceedings de la Conference COMSOL 2020
Mechanical Model of RF MEMS Capacitor Structures
In order to design an RF MEMS based device, it is beneficial to have information concerning mechanical behavior. For model verification purpose, solution offered by simulation software equipped with predefined physics application is one valuable way to provide initial reference. To avoid ... En savoir plus
The Spiral RF MEMS Switch in COMSOL Multiphysics
This work presents the study of spiral RF MEMS switch which has low actuation voltage due to spiral structure. This work is inspired by the superior performance of electrostatic RF MEMS switches over the conventional state-of-the-art solid-state devices and the potential applications in ... En savoir plus
A Study of Geometrical Shape of Central Plate in Electrostatic Actuation
This study is performed to know which central plate geometry is best suited for electrostatically actuated switch. The simulation is carried out in COMSOL Multiphysics, where user is free to model the geometry without depth knowledge about geometrical dependency of electrostatic. The ... En savoir plus
Numerical Study of the Scattering of a Short-Pulse Plane Wave by a Buried Sphere in a Lossy Medium
The scattering by a buried sphere in the frequency domain with the use of the Finite Element Method (FEM) implemented by COMSOL Multiphysics, is analyzed. A short-pulse is used as an excitation with the spectrum spanning from 50 MHz to 1 GHz. In order to validate our results, a ... En savoir plus
Complex K-Bands Calculation for Plasmonic Crystal Slabs by Means of Weak Formulation of Helmholtz's Eigenvalue Equation
We present a Finite Element Method (FEM) to calculate the complex valued k(?) dispersion curves of a photonic crystal slab in presence of both dispersive and lossy materials. In particular the method can be exploited to study plasmonic crystal slabs. We adopt Perfectly Matched Layers ... En savoir plus
Terahertz Resonant Dipole Nanoantennas
Nanoantennas have been successfully employed in a wide set of applications. We show the possibility to expand usual nanoantenna functionalities in the THz domain with a gold dipole nanoantenna. We considered an array of aligned planar gold nanoantennas over a silicon substrate. The high ... En savoir plus
Topographic Effects on Radio Magnetotelluric Simulations on Levees: Numerical Modeling for Future Comparison With Fields Results
We study the topography influence of levees on the electric resistivity signal obtained with the Radio-Magnetotelluric method. Field measurements have been modeled with COMSOL, using the AC/DC and RF Modules. A levee situated in Orléans along the Loire river (France) has been considered ... En savoir plus
Modeling Microwave Chiral Material Based On Crank Resonators Arrays Using COMSOL Multiphysics
Electromagnetic metamaterials present exotic and unusual properties hardly to be found in nature with many potential applications. They are usually built by distributing small resonant structures in periodical lattices. If the structure has chiral symmetry, the medium is called chiral ... En savoir plus
FEM Based Design and Simulation Tool for MRI Birdcage Coils Including Eigenfrequency Analysis
Designing a Radio Frequency (RF) birdcage coil used in Magnetic Resonance Imaging (MRI) at high frequencies where the wavelength is comparable with the coil dimensions is a challenging task. Before construction of the coil, not only calculating the capacitance value which is necessary ... En savoir plus
Calculating the Haze Parameter of Textured Transparent Conductive Oxides
In thin-film solar cells (a-Si:H, µc-Si:H, CIGS, etc.) scattering of light is very important to increase absorption of light in the active layers of solar cells. Today the most efficient thin-film solar cells are designed or deposited on random textured transparent conductive oxides ... En savoir plus