Regarding Nano wire grating
Hello everyone Well i have a doubt regarding the model "Plasmonic wire grating". In this model we are simulating the effect of periodic wire grating which is placed on dielectric substrate. My question...
View ArticleBackground field for a scattering field define
Hello. Manually we can enter a scatter field define by user like this: Ex= 0, Ey=0 and Ez=E0*exp(-j*k0*x) with E0=1 [V/m] for example. Strangely, for 2D cases, abs(emw.Ebx) = E0/2. (it should be equal...
View ArticleHeat dissipation in a plasmonic nanostructure using pulsed laser
I am trying to generate a model where I can look at the heat dissipation in a plasmonic structure when irradiated by a ns pulsed laser. I have managed to make a model where I can solve the emf...
View ArticlePlasma Actuator Modelling query
Hello I have developed an AC-DBD plasma actuator model. The DBD is driven by an AC source. I have made use of the DC-Discharge interface since it has electrostatics, heavy species transport and drift...
View ArticleProblems about Periodic Conditions in the tutorial model “Periodic Boundary...
Hi all, Recently I confront one confusion about periodic conditions in the tutorial model - Periodic Boundary Condition. In Periodic Condition, it selects only boundaries 1 and 6 which are parallel...
View ArticleCurrent Source and Violation of Current Conservation
Hi I'm using the electric currents interface. My model uses the "current source" feature and the solution COMSOL gives clearly violates current conservation. Has anyone else experienced this? And does...
View ArticleDC discharge modelling query
Hello I am modelling a DC discharge in between 2 electrodes which are positioned asymmetrically. I am making use of the example model in comsol library (positive column-2d). Both models are attached in...
View Articlehello from china
I am new to COMSOL and new to SPPs, Recently I encounter some questions. Would you minding send me your email address and I hope you can help me solve my question. thank you
View Articletransparency... black shape
Hello, I am currently facing a problem: When I click on transparency with the version 4.2 the shape I drawn becomes back. Does anyone have any answer. Thank you very much Nicolas
View ArticleHow can a p-polarized light be defined in the User Defined port?
Hi, I want to define a TM light propagating perpendicularly in +y direction in a "User Defined" port inside a medium with periodic BCs in both sides. My inplane components are x-y and the z direction...
View ArticleHollow Waveguides
Hi, first of all excuse my bad English. I have study about Hollow Waveguides. I've been using Comsol v5 software to simulate. I used the dielectric slab waveguide of Comsol examples example. see...
View ArticleHow to draw a periodic waveguide?
Hi all, I have a simple question towards for geometry for which I didn't a lot of search but still confused. So how do you draw a periodic waveguide that has a simple mathematical expression in 3D? For...
View ArticleModel Inputs problem (Material dispersion)
Hi, everyone! I am trying to simulate material dispersion ( gold J&C) in Frequency Domain (eigenfrequency study ) using Model Input ( Frequency) of the material. But results seems to be wrong ( I...
View ArticleNear to far field transformation
Hi everyone, I am trying to simulate far field electric RF emission using Near field Test data. Is it possible to do so in COMSOL? I want to simulate electronic sub assembly like instrument cluster of...
View ArticleMie scattering in 4.3
Hello, I have already seen some discussion about mid scattering of a gold nanosphere. But I the discussions I have consulted, no one has yet implemented a mie scattering program in Comsol 4.2 or 4.3...
View Articletutorial "Scatter on Substrate"
Dear all, Is it possible to practice the tutorial "Scatter on Substrate" on version 4.3?www.comsol.com/showroom/documentation/model/14443/ I want to simulate the transmission through the metal...
View ArticleMode tracking in mode solver, RF modue
Hi, I have defined a structure in the mode solver in the RF module, and I got the mode that can exist in this structure, but I need to make frequency sweep for one of the modes, which means that I need...
View ArticleWhich module is useful for solving scattering phenomena for array of nano...
Hello everyone , I want to simulate the scattering pattern by array of nano rod which is placed on Glass substrate. Which module should i use for solving this problem? Should i use RF module or Wave...
View ArticleCOMSOL 4, TE and TM modes
In previous version of COMSOL (e.g. COMSOL 3.5) it is quite simple to choose TE or TM modes analysis. In the COMSOL 3.5, in the model navigator I can choose "In-Plane waves" or "Perpendicular waves"...
View ArticleHE and EH modes
Hy guys, is there any difference between EH and HE modes in the Hybrid Mode Waves application mode? When I choose Hybrid Mode Waves what kind of modes I´ll get ? EH or HE? Depend this on the choice of...
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