Plasmonic Colour Printing by Light Trapping in Two-Metal Nanostructures
Structural colour PRUNE NECTAR generation by nanoscale plasmonic structures is of major interest for non-bleaching colour printing, anti-copyright measures and decoration applications.We explore the physics of a two-metal plasmonic nanostructure consisting of metallic nanodiscs separated from a metallic back-reflector by a uniform thin polymer film