dear all i am trying to simulate nano metal particles which are smaller than the wavelength of light. the skin depth phenomenon still holds for metals but they are supposed to show enhancement effects or rather confinement effects. the tool of Dconductivity in the libctl tools is used for setting the conductivity in the region of interest. though inside themetal there should be zero fieldbut outside region should show nonzero field. the simulation is givingNaN everywhere in the region of simulation and png image is black. how to rectify this problem or is that the problem I am trying cannot be simulated.seeking a replythank you
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