Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared.

ABSTRACT: Metasurfaces are ultrathin, two-dimensional arrays of subwavelength resonators that have been demonstrated to control the flow of light in ways that are otherwise unattainable with natural materials. These arrays are typically composed of metallic Ag or Au nanostructures shaped like split rings, nanowire pairs or nanorods (commonly referred to as meta-atoms) that are arranged to produce a collective optical response spanning an impressive range of properties, from the perfect absorption of incident light to superresolution imaging. However, metasurfaces pose major challenges in their fabrication over large areas, which can be prohibitively expensive and time consuming using conventional nanolithography techniques. Here we show that differently shaped colloidal nanocrystals can be organized

SUBMITTER: Rozin MJ 

PROVIDER: S-EPMC4557363 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature