Figure 5: Reflection spectra of plasmonic crystals.
From: A programmable nanoreplica molding for the fabrication of nanophotonic devices

(a) Schematic diagram of a photonic crystal slab with a rectangular lattice. Experimental and simulated transmission spectra of photonic crystal slabs when the resonance modes are excited from the normal direction, for a square (b), rectangular (c), and triangular lattice (d).