An anonymous reader writes: Researchers have developed a technique to replicate biological structures, such as butterfly wings, on a nano scale. They focused on the tiny nano-sized photonic structures that are found in the insects’ cuticle, and which give insects their iridescence — that slightly metallic sheen that also seems to shift in color depending on the viewing angle. By replicating the biotemplate of butterfly wings, the researchers hope to be able to make various optically-active structures, such as optical diffusers or coverings that maximize solar cell absorption.
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