[Meep-discuss] Spatially varying epsilon and sigma for a dispersive material

Dear Meep users, I want to simulate a spatially varying dispersive material of which the epsilon and sigma should be functions of position. But after searching all related topics to apply to my .ctl file, I found it doesn't work. For a simple example, I want to simulate a dispersive materi

[Meep-discuss] Dispersive material model

Dear Steven and all meep users, We are doing subwavelength research, and have used our self-development FDTD 2D code to do our simulation in which we use "Drude model" to describe a dispersive material (Referred to Allen Taflove, 3rd Edition). Recently, when we used meep, we've found the