Plasmonic Colour Printing by Light Trapping in Two-Metal Nanostructures.

ABSTRACT: Structural colour generation by nanoscale plasmonic structures is of major interest for non-bleaching colour printing, anti-counterfeit 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 and investigate the potential for vibrant structural colour in reflection. We demonstrate that light trapping within the nanostructures is the primary mechanism for colour generation. The use of planar back-reflector and polymer layers allows for less complex fabrication requirements and robust structures, but most significantly allows for the easy incorporation of two different metals for the back-reflector and the nanodiscs. The simplicity of the struct

SUBMITTER: Wilson K 

PROVIDER: S-EPMC6669635 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature