Disordered plasmonic metasurfaces: from scalable fabrication to imaging applications

Abstract

Disordered plasmonic metasurfaces provide scalable alternatives to lithographic nanophotonics, creating dense hotspots and robust structural colors. We overview rapid wafer- scale electrostatic nanoparticle assembly and highlight imaging- oriented functions including imaging-based molecular sensing, optical security authentication, and emerging opportunities toward label-free bioimaging.