Precise patterning of gold nanoparticle gratings on gelatin films

Abstract

A method to fabricate gold nanoparticles in gelatin films and pattern them into gratings with periods down to 200 nm is reported. The procedure, based on holographic lithography, dry etching and temperature annealing, enables tuning the size and particle distribution. These materials offer potential for wearable and bio-compatible plasmonic-based applications.