dc.contributor.author | Burresi, M | |
dc.contributor.author | Cortese, L | |
dc.contributor.author | Pattelli, L | |
dc.contributor.author | Kolle, M | |
dc.contributor.author | Vukusic, P | |
dc.contributor.author | Wiersma, DS | |
dc.contributor.author | Steiner, U | |
dc.contributor.author | Vignolini, S | |
dc.date.accessioned | 2016-06-22T13:43:30Z | |
dc.date.issued | 2014-08-15 | |
dc.description.abstract | Whiteness arises from diffuse and broadband reflection of light typically achieved through optical scattering in randomly structured media. In contrast to structural colour due to coherent scattering, white appearance generally requires a relatively thick system comprising randomly positioned high refractive-index scattering centres. Here, we show that the exceptionally bright white appearance of Cyphochilus and Lepidiota stigma beetles arises from a remarkably optimised anisotropy of intra-scale chitin networks, which act as a dense scattering media. Using time-resolved measurements, we show that light propagating in the scales of the beetles undergoes pronounced multiple scattering that is associated with the lowest transport mean free path reported to date for low-refractive-index systems. Our light transport investigation unveil high level of optimisation that achieves high-brightness white in a thin low-mass-per-unit-area anisotropic disordered nanostructure. | en_GB |
dc.description.sponsorship | We wish to thank R. Blumenfeld, T. Svensson, R. Savo and K. Vynck for fruitful discussions,
B.D. Wilts for the comments on the manuscript and J. Aizenberg for support in the SEM
measurements. The research leading to these results has received funding from the
European Research Council under the European Union’s Seventh Framework Programme
(FP7/2007–2013)/ERC grant agreement n [291349] and USAF grant FA9550-10-1-0020 | en_GB |
dc.identifier.citation | Vol. 4: article 6075 | en_GB |
dc.identifier.doi | 10.1038/srep06075 | |
dc.identifier.uri | http://hdl.handle.net/10871/22214 | |
dc.language.iso | en | en_GB |
dc.publisher | Nature Publishing Group | en_GB |
dc.relation.url | http://www.ncbi.nlm.nih.gov/pubmed/25123449 | en_GB |
dc.relation.url | http://hdl.handle.net/10871/22212 | |
dc.rights | This work is licensed under a Creative Commons Attribution 4.0 International
License. The images or other third party material in this article are included in the
article’s Creative Commons license, unless indicated otherwise in the credit line; if
the material is not included under the Creative Commons license, users will need
to obtain permission from the license holder in order to reproduce the material. To
view a copy of this license, visit http://creativecommons.org/licenses/by/4.0 | en_GB |
dc.subject | Animals | en_GB |
dc.subject | Anisotropy | en_GB |
dc.subject | Beetles | en_GB |
dc.subject | Chitin | en_GB |
dc.subject | Color | en_GB |
dc.subject | Light | en_GB |
dc.subject | Refractometry | en_GB |
dc.subject | Scattering, Radiation | en_GB |
dc.title | Bright-white beetle scales optimise multiple scattering of light | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2016-06-22T13:43:30Z | |
dc.identifier.issn | 2045-2322 | |
exeter.place-of-publication | England | |
dc.description | This is the final version of the article. Available from the publisher via the DOI in this record. | en_GB |
dc.description | Error in funder statement in this article is corrected in http://hdl.handle.net/10871/22212 | |
dc.identifier.journal | Scientific Reports | en_GB |
dc.identifier.pmcid | PMC4133710 | |
dc.identifier.pmid | 25123449 | |