bioRxiv preprint doi: https://doi.org/10.1101/2020.08.27.271213; this version posted August 29, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 1 Title: Single Gyroid and Inverse b.c.c. Photonic Crystals in Bird Feathers 2 Short title/running head: Avian Cubic Photonic Crystals 3 Field Codes: Materials Science and Evolutionary Biology 4 5 Authors: 6 Vinodkumar Saranathan1-4, 7*, Suresh Narayanan5, Alec Sandy5, Eric R. Dufresne6, and 7 Richard O. Prum7 8 9 Affiliations: 10 1Division of Science, Yale-NUS College, 10 College Avenue West, 138609, Singapore. 11 2NUS Nanoscience and Nanotechnology Initiative (NUSNNI-NanoCore), National University 12 of Singapore, 117581, Singapore. 13 3Department of Biological Sciences, National University of Singapore, 117543, Singapore. 14 4Lee Kong Chian Natural History Museum, National University of Singapore, 117377, 15 Singapore. 16 5Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois, 60439, USA. 17 6Department of Materials Science, ETH, Zurich, Switzerland 18 7Department of Ecology and Evolutionary Biology, and Peabody Museum of Natural History, 19 Yale University, New Haven, CT 06520, USA. 20 21 *Correspondence to:
[email protected] Saranathan et al. - 1 bioRxiv preprint doi: https://doi.org/10.1101/2020.08.27.271213; this version posted August 29, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 22 Abstract (124 words): 23 Vivid, saturated structural colors are a conspicuous and important aspect of the 24 appearance of many organisms.