Dear Hossein, the permittivity of metals is a complex function of a nontrivial dependence of frequency. As far as I know, basically there is big negative real part and diverging imaginary part for low frequencies, few resonant bumps in the optical/UV region, and a limit of 1+0i for X-rays. If you properly define this function using several polarizabilities in meep, you may get along without explicit setting of conductivity or permeability for nonferromagnetic metals.
Please look at Aaron's page discussing this: http://falsecolour.com/aw/meep_metals/ An example script in Python is also at http://fzu.cz/~dominecf/misc/meep/index.html#mat_mod . Hope this helps, Filip 2012/9/26, hossein reisi <[email protected]>: > Hi > Dear all meep users > first, i sorry for my silly question. i don't have spacial info in physics. > I want to use silver and gold in my simulation. We know that relative > permittivity (or dielectric constant) of metals (such as silver and gold) > are 1 (or very close to 1). > when i set epsilon of metal materials to one in simulation, nothing > happened.(it's like air) > so may i set other properties of metal materials for better results such as > mu(permeability) or D(conductivity)?? > thanks for your helps. > _______________________________________________ meep-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
