Biomimetic reconstruction of butterfly wing scale nanostructures for radiative cooling and structural coloration
Jinwoo Lee, Yeongju Jung, Min Jae Lee, June Sik Hwang, Jiang Guo, Wooseop Shin, JinKi Min, Kyung Rok Pyun, Huseung Lee, Yaerim Lee, Junichiro Shiomi, Young‐Jin Kim, Byung‐Wook Kim, Seung Hwan Ko
Abstract
sacrificial template-based solution process to mimic the random porous structure and laser-interference lithography to reproduce the nanograting architecture of the butterfly wing scale. As a result, the biomimetic structure of the nanograted surface on top of the porous film demonstrated desirable heat transfer and optical properties for outstanding radiative cooling performance and iridescent structural coloring. In this regard, the film is capable of inducing the maximum temperature drop of 8.45 °C, and the color gamut of the biomimetic film can cover 91.8% of the standardized color profile (sRGB).