One-click electromagnetism at the nanoscale
A periodic array of wires reflects, transmits and diffracts light. Near the wavelengths where a diffraction order grazes the grating (the Rayleigh anomaly, λ ≈ period × (n ± sin θ)), collective lattice resonances produce sharp features.
Reflectance and transmittance of an infinite grating of cylinders, with near-field maps, for a chosen period, gap, angle of incidence and polarization.
Exactly for an infinite grating: each cylinder's multipoles are coupled to all others through lattice sums.
Periodic arrays of nanowires: reflection, transmission and near fields, in one click.