Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Incident field confusion
Posted Aug 10, 2011, 4:36 p.m. EDT RF & Microwave Engineering Version 4.2 1 Reply
Please login with a confirmed email address before reporting spam
Dear Sir/Madam,
I'm a freshman in RF module, and would like to try a very simple and straightforward case first so I can move to more complicated case later:
modeling how light (i.e., electromagnetic wave) is absorbed inside a metal oxide layer (~0.5 mm).
I'm not sure how can I deal with the boundary conditions and set the light source.
1) I tried draw a close box by using Bezier polygon, and set top line be the source using electric field or scattering boundary condition (set amplitude 1 V/m), but the modeling result show nothing (green-colored box instead of any rainbow color).
2) I also tried to stack one thin rectangle as source (set non-zero initial value) on the top of rectangle of my sample. But the sample show dark blue which means zero . It doesn't make sense since the sample should absorb some light.
The answer may be really simple, but I cannot get any help from my working environment. So I would really appreciate you help! Thanks,
I'm a freshman in RF module, and would like to try a very simple and straightforward case first so I can move to more complicated case later:
modeling how light (i.e., electromagnetic wave) is absorbed inside a metal oxide layer (~0.5 mm).
I'm not sure how can I deal with the boundary conditions and set the light source.
1) I tried draw a close box by using Bezier polygon, and set top line be the source using electric field or scattering boundary condition (set amplitude 1 V/m), but the modeling result show nothing (green-colored box instead of any rainbow color).
2) I also tried to stack one thin rectangle as source (set non-zero initial value) on the top of rectangle of my sample. But the sample show dark blue which means zero . It doesn't make sense since the sample should absorb some light.
The answer may be really simple, but I cannot get any help from my working environment. So I would really appreciate you help! Thanks,
1 Reply Last Post Aug 14, 2011, 4:32 a.m. EDT
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Hi
indeed its good to start with a simple example (and to run the examples in the model library). from what I understand you seem to have no "source" of EM energy, ou need to have a radiating source in there defined i.e by a voltage.
read trhough some of the simple RF or optics examples
--
Good luck
Ivar
indeed its good to start with a simple example (and to run the examples in the model library). from what I understand you seem to have no "source" of EM energy, ou need to have a radiating source in there defined i.e by a voltage.
read trhough some of the simple RF or optics examples
--
Good luck
Ivar