Quantcast
Channel: Solving, solving\ - Latest Discussions - COMSOL Forums
Viewing all articles
Browse latest Browse all 3988

Problem when simulating nanowire absorption

$
0
0
Hy all,

I'm simulating the absorption of a nanowire in vaccum. I started with a 2D model in the RF module. My geometry is a nanowire in vacuum surrounded by cartesian air-PML. I solved the problem for the scattered field. The incident field propagates along the y direction and is either x or z polarized.

I have no problem with the x-polarization, however when I solve the problem for the z-polarized field, the scattered field is not well absorbed by the PML (see fig in attachment) and it does not change if I increase the size of the PML and/or the mesh size.

Can somebody explain why ?

Furthermore, I'm trying to simulate the absorption in the 3D geometry and to reduce the model size, I want to model only a quarter of a nanowire, which boundary condition should be apply ? I found that perfect electric/magnetic BC are not rigorously correct in that case. Is there a way to impose different BCs on each component of the fields on the surface ?

Thanks a lot !

Olivier

Viewing all articles
Browse latest Browse all 3988

Trending Articles



<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>