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When to use zero or nonzero conductivity for plasmonics?
Posted 3 juin 2013, 16:36 UTC−4 RF & Microwave Engineering, Materials, Parameters, Variables, & Functions 2 Replies
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Hello,
We have looked at the Optical Scattering off a Gold Nanosphere model (model 12415) after
trying on our own to solve for the frequency response of a gold nanosphere. We also attempted modifying the Radar Cross-Section model (model 8613) for the same purpose. Both models must use an electrical conductivity of zero for the gold in order to obtain the correct result. We do not understand why this is so, since the electrical conductivity of gold is nonzero.
More generally, when is it appropriate to set electrical conductivity to zero and when is it not?
We have looked at the Optical Scattering off a Gold Nanosphere model (model 12415) after
trying on our own to solve for the frequency response of a gold nanosphere. We also attempted modifying the Radar Cross-Section model (model 8613) for the same purpose. Both models must use an electrical conductivity of zero for the gold in order to obtain the correct result. We do not understand why this is so, since the electrical conductivity of gold is nonzero.
More generally, when is it appropriate to set electrical conductivity to zero and when is it not?
2 Replies Last Post 31 juil. 2013, 22:58 UTC−4
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Posted:
1 decade ago
I didn't check the two models you mentioned, but I guess the permittivity is complex number in those models. You should note in frequency domain complex permittivity is equivalent to nonzero conductivity.
--
Pu, ZHANG ??
Departamento de Física Teórica de la Materia Condensada,
Universidad Autónoma de Madrid,
Madrid, Spain.
Hello,
We have looked at the Optical Scattering off a Gold Nanosphere model (model 12415) after
trying on our own to solve for the frequency response of a gold nanosphere. We also attempted modifying the Radar Cross-Section model (model 8613) for the same purpose. Both models must use an electrical conductivity of zero for the gold in order to obtain the correct result. We do not understand why this is so, since the electrical conductivity of gold is nonzero.
More generally, when is it appropriate to set electrical conductivity to zero and when is it not?
--
Pu, ZHANG ??
Departamento de Física Teórica de la Materia Condensada,
Universidad Autónoma de Madrid,
Madrid, Spain.
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Posted:
1 decade ago
Dear Everyone,
I also has this problem to understanding why the conductivity should be set to zero while the complex permittivity is equivalent to nonzero conductivity.
I also has this problem to understanding why the conductivity should be set to zero while the complex permittivity is equivalent to nonzero conductivity.