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Xia Wu, Andreas Erbe, Dierk Raabe and Helge-Otto Fabritius Extreme Optical Properties Tuned Through Phase Substitution in a Structurally Optimized Biological Photonic Polycrystal Advanced Functional Materials 23

Version of Record online: 12 MAR 2013 | DOI: 10.1002/adfm.201203597

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The cuticular photonic polycrystals formed by the beetle Entimus imperialis are a perfect example of a natural diamond-type triply periodic bicontinuous cubic structure with structural parameters that are optimized to open up the largest possible photonic stop gaps. Depending on whether the cuticular network is complemented by air or SiO2, the optical properties of individual domains vary from bright coloration to no coloration and transparency.

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