I think it would help you to try two things:
1) Increase the resolution
2) You define your normal_metal as a dielectric with epsilon -3. I
think that's wrong (even if you didn't have singularities, you
wouldn't get the behavior you want). Try using meep's predefined
"metal", instead of your normal-metal. Then you can look into how to
define your own metals (I'm not sure how that works with meep).
On Thu, 22 Mar 2007, CHING YAN HENRY NG wrote:
Dear Matt,
Thank a lot, but I still have problem about simulating the field metal.
I got a feeling that it is not just a matter of averaging or not.
Whenever I use some negative values in my epsilon, there will be adrupt
change of epsilon on boundary such that some crazy epsilon number will
be generated. I guess these numbers are generated by interpolation
scheme on 1/epsilon. The crazy number are the result of zero crossing of
epsilon on the grid. Those crazy number on boundary will screw up the
whole simulation and it is not just the matter of visualization.
I hope I 'm wrong, because those kind of problems are definitely not easy to solve.
If anyone have similar experience, plz feel free to point out my error.
I attached my ctl script for reference.
Regards,
Henry
_______________________________________
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http://messenger.yahoo.com.hk
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