Robustly nano-tailored honeycomb structure for high-throughput antireflection polymer films

Abstract

Although recently fabricated biomimetic nanostructures exhibit superior performance compared to corresponding nanostructures found in nature, their practical applications are limited due to the low mechanical stability of the nanostructures and the low productivity of the fabrication processes developed thus far. A nanoporous honeycomb structure that can alleviate any concentrated stress effectively was fabricated using roll-to-roll processable thermal nanoimprint lithography for high throughput and performance antireflection polymer films. A nanoscale positive (convex) antireflective structure of the moth eye, which shows broadband and omnidirectional antireflection properties, and a negative (concave) antireflective structure were produced using this process. The new nanoporous honeycomb structure exhibited high performance AR and enhanced mechanical stability. Moreover, a continuous process that can be used for industrial mass production was developed.