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Mimicking Moth Eyes to Produce Transparent Anti-Reflective Coatings #Biomimicry

Mimicking moth eyes to make new coatings m
The eyes of moths have a biological nanostructure that gives them anti-reflective properties, trying to recreate these properties on a large scale has proven to be difficult, Via Labmanager

As mainly nocturnal animals that wish to stay hidden from surrounding predators, moths have evolved to develop eyes that are non-reflective. Their eyes have a periodic nanometric structure that makes the eye surface graded, as opposed to polished. This causes most incident light to bend at the surface and therefore, be transmitted through the eye instead of being reflected off it. This nanoscale arrayed structure is so effective that researchers have tried to mimic it using other materials to create anti-reflective coatings with varying degrees of success.

However, in spite of the recent progress in nanoscience that allows the adoption of this idea for various practical applications, there are still barriers to overcome in terms of scalability and cost of manufacturing. To tackle these problems, scientists from Tokyo University of Science and Geomatec Co., Ltd., Japan, have been working on a novel strategy to produce moth-eye nanostructures and transparent films. In their latest study, published in Micro and Nano Engineering, they present a promising method to fabricate moth-eye molds and films at large scales.

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