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Boundary condition selection in simulating the surface plasmon resonance
Posted 10 août 2009, 12:53 UTC−4 2 Replies
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At the beginning I selected scattery boundary condition for all the outside boundary, and set one value of them into 1 as input side, and k vector to change the input angle. But the results do not match the numercial results obtained by matlab.
Later, I got reply from COMSOL support, and they changed the boundary condition into Port condition for input, and set the input power of 1W/m, and select Floquet Periodic condition for all the other boundaries except inner boundary and input-output ports.
Could anybody tell me how to distinguish the scattery boundary condition from Floquet periodic condition? When should I use scattery condition?
Thanks a lot.
The first attached file is the one I created, named spr-prism-1.mph.
The second one is from COMSOL.
According to the second one, I changed the first one into the third file, but the SPR is not correct. What is wrong then?
Hello Ling Sieben-Xu
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could you please upload your files in .m format. I am using comsol v 3.5 and can not read your files.
thank you.
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place. What do you think about that?
Firstly, the boundary condition of 5 and 6 should set to be k2x, k2y,
and not k2x, k1y.
Secondly, port 2 should set to be H0z=exp(-i*k2y*y), not exp(-i*k1y*y).
Thirdly, though I change the setup as above, the result uncharged still, why?