One-click electromagnetism at the nanoscale
An infinitely long cylinder is solved exactly by the cylindrical analogue of Mie theory. Its cross-sections are given per unit length (an area per length, i.e. a width), and they depend strongly on the polarization: electric field along the axis or across it.
With the electric field along the wire, metal wires behave like their bulk metal and show no plasmon; with the field across the wire, metal wires show a localized plasmon. Dielectric wires show Mie resonances in both.
Yes: add shells around the core, for example an oxide layer on a metal wire or a semiconductor core–shell wire.
Extinction, scattering and absorption of cylinders and nanowires, both polarizations, in one click.