photonic crystal fiber
Hi, I am a beginner of comsol v 4. I tried to design a pcf with hexagonal pattern of airholes (five rings). pitch=2um and d=1 um. I got real part of effective mode index but don't get any imaginary...
View ArticleIntegrated circuit simulation in COMSOL Multiphysics
Hi All, I want to simulate integrated circuit (IC) that also contain MOSFETs into COMSOL. Regarding this I have following queries: 1) The IC is designed for radio frequency (RF) range. So, for the...
View ArticleUsing symmetry gives false force values
Update %%%%%% Dear All, I have simulated the following model 'Optical Scattering by Gold Nanospheres' using RF Module. As mentioned in the model, you can solve for 1/4 of the geometry due to...
View ArticleWhy the same program sometime need 4000 secs and sometimes 300 secs
May I ask if anyone know why the same comsol program sometime need 4000 secs and sometimes 300 secs to solve? Exactly the same one, I didn't change any parameters, mesh, solver, just run it
View ArticleOptimization RF Module
Hi I have a working model of an rf heating example and want to extend it as an optimization problem. The model works well without optimization in which I want to maximize absorbed power that depends on...
View ArticlePhotocurrent calculation in RF module
Greetings I have a solar cell (silicon brick) with metallic rods on the top surface. This is well known structure to enhance the solar cell responsivity with plasmonic effects. So I want to calculate a...
View ArticleSPR/hotspots/nanostructures
Dear all, I am relatively new to COMSOL and would eventually like to use the program to model the hotspots and surface plasmon resonance of anisotropic gold nanostructures. I was just wondering if...
View ArticleNormalizing eigenmode
Hi, I have a simulation where I'm bringing a metal reflector close to a plasmonic structure and am running the eigenmode analysis to see if the intensity of my desired mode increases. I've been...
View Articleusing comsol simulate graphene plasmonic waveguide
anyone working in the area of graphene plasmonic? i used comsol RF module to simulate the plasmonic wave propagating on free standing graphene sheet, first i used the 2D mode analysis study to analysis...
View Articleconsult for COMSOL simulation of graphene plasmon propagation
Dear All, i am new to COMSOL, i wish to simulation surface plasmon propagation in a piece of Gold rod sitting on top of graphene film, i wonder has anyone experienced about this and give me some...
View ArticleSuperscatterer simulation
Hi, everyone. I searched about superscatterer structure simulations for weeks but I failed to find any. That is why I decided to start a new thread. I read a paper about superscatterer blocking...
View Article2D geometry but illuminated from below
Hi, I want to create a 2D geometry but illuminate it from below, or out of plane, with a plane wave. Whenever I try and set the Background Field as exp(-i*emw.k0*z) (in x direction) I get errors as it...
View Articleabsorption of material
combination of 3 materials in the form of layer by layer ,in that time i want individual material abortion and transmission and reflection, up to now i got transmission and reflectance , how to i will...
View ArticleQuestion with RF module about system with diffraction
Hi all, I'm trying to calculate reflection and transmission for a system where (structure attached) we have an periodic (both in x and y direction) system of Si pillars lies in a certain matrix. The...
View ArticleFailed to evaluate variable Jacobian
Hello everyone, I am using comsol V4.3a. I am trying to simulate of one nano-plasmonic problem. But I am having the following prob. Failed to evaluate variable Jacobian. - Variable: mod1.emw.relcurlEz...
View ArticleHow to plot the electric field of circular polarized light?
Hello I simulate a meta-surface model when a circular polarized light is normal incident, the polarization state of transmitted light is circular polarized too, and how can I plot the transmitted...
View Articlesetup of output port with two different polarization states simutaneously
Hello, I encountered a problem about setup of output port, and need your kind help. The circular polarized light incidence on a transparent structure normally, at the transmitted output port, there...
View ArticleRF Antenna Simulation Accuracy Estimation & Maximization
Hi, We are new to Comsol and running v.4.3 on a laptop with 2GB memory, which forces us to find ways to economize on computing power. As a warm up, I was trying to run the models.rf.dipole_antenna.pdf,...
View ArticleOverlap of Spatially Separated Quantities in Livelink
I want to calculate the modes of an array of weakly-coupled optical resonators by a tight binding method. The individual resonators making up my system are cylindrical, so I calculate their modes...
View ArticleMicromagnetic simulation based on LLG eq. by COMSOL
Hello all! I would like to simulate B-H curve of core-shell nanomaterials. As I know OOMMF simulation can make this results based on Landau-Lishitz-Gilbert (LLG) equation. But, I want to add...
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