materials Article Biomimetic Polymer Surfaces by High Resolution Molding of the Wings of Different Cicadas Graham Reid 1 , James C. McCormack 1 , Olivier Habimana 2 , Fabian Bayer 3, Catherine Goromonzi 3, Eoin Casey 4 , Aidan Cowley 3,† and Susan M. Kelleher 1,5,* 1 School of Chemistry, University College Dublin, Dublin 4, Ireland;
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[email protected] (J.C.M.) 2 School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China;
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[email protected] (C.G.);
[email protected] (A.C.) 4 School of Chemical and Bioprocess Engineering, University College Dublin, Dublin 4, Ireland;
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[email protected]; Tel.: +353-(0)1-700-6167 † Current address: European Astronaut Centre, Linder Höhe, D-51147 Cologne, Germany. Abstract: Recent studies have shown that insect wings have evolved to have micro- and nanoscale structures on the wing surface, and biomimetic research aims to transfer such structures to application- specific materials. Herein, we describe a simple and cost-effective method of replica molding the wing topographies of four cicada species using UV-curable polymers. Different polymer blends of polyethylene glycol diacrylate and polypropylene glycol diacrylate were used as molding materials and a molding chamber was designed to precisely control the x, y, and z dimensions. Analysis by Citation: Reid, G.; McCormack, J.C.; Habimana, O.; Bayer, F.; Goromonzi, scanning electron microscopy showed that structures ranged from 148 to 854 nm in diameter, with a C.; Casey, E.; Cowley, A.; Kelleher, height range of 191–2368 nm, and wing patterns were transferred with high fidelity to the crosslinked S.M.