Bioinspired silicon hollow-tip arrays for high performance broadband anti-reflective and water-repellent coatings†
Abstract
High performance anti-reflective coatings were fabricated using high aspect ratio silicon hollow-tip arrays. They can suppress surface reflection from ultraviolet, visible light, to the mid-infrared region, with specular reflectance lower than 1% in the 250–1600 nm range. In addition, the tip arrays possess perfect water-repellent properties due to their high aspect ratio.