The Anomalous Infrared Transmission of Gold Films on Two‐Dimensional Colloidal Crystals

Abstract

Plasmonic crystals with submicrometer periodicity and extraordinary dispersion properties that depend on the polarization of incident light are obtained by partially covering silica or polystyrene spheres with a thin gold film (see figure). The optical properties of these two-dimensional ordered metallodielectric microstructures shown here promise a wide range of potential near-infrared applications.