Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces

Inspired by the white beetle of the genus Cyphochilus, we fabricate ultra-thin, porous PMMA films by foaming with CO(2) saturation. Optimising pore diameter and fraction in terms of broad-band reflectance results in very thin films with exceptional whiteness. Already films with 60 µm-thick scatterin...

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Autores principales: Syurik, Julia, Siddique, Radwanul Hasan, Dollmann, Antje, Gomard, Guillaume, Schneider, Marc, Worgull, Matthias, Wiegand, Gabriele, Hölscher, Hendrik
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5399467/
https://www.ncbi.nlm.nih.gov/pubmed/28429805
http://dx.doi.org/10.1038/srep46637
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author Syurik, Julia
Siddique, Radwanul Hasan
Dollmann, Antje
Gomard, Guillaume
Schneider, Marc
Worgull, Matthias
Wiegand, Gabriele
Hölscher, Hendrik
author_facet Syurik, Julia
Siddique, Radwanul Hasan
Dollmann, Antje
Gomard, Guillaume
Schneider, Marc
Worgull, Matthias
Wiegand, Gabriele
Hölscher, Hendrik
author_sort Syurik, Julia
collection PubMed
description Inspired by the white beetle of the genus Cyphochilus, we fabricate ultra-thin, porous PMMA films by foaming with CO(2) saturation. Optimising pore diameter and fraction in terms of broad-band reflectance results in very thin films with exceptional whiteness. Already films with 60 µm-thick scattering layer feature a whiteness with a reflectance of 90%. Even 9 µm thin scattering layers appear white with a reflectance above 57%. The transport mean free path in the artificial films is between 3.5 µm and 4 µm being close to the evolutionary optimised natural prototype. The bio-inspired white films do not lose their whiteness during further shaping, allowing for various applications.
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spelling pubmed-53994672017-04-21 Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces Syurik, Julia Siddique, Radwanul Hasan Dollmann, Antje Gomard, Guillaume Schneider, Marc Worgull, Matthias Wiegand, Gabriele Hölscher, Hendrik Sci Rep Article Inspired by the white beetle of the genus Cyphochilus, we fabricate ultra-thin, porous PMMA films by foaming with CO(2) saturation. Optimising pore diameter and fraction in terms of broad-band reflectance results in very thin films with exceptional whiteness. Already films with 60 µm-thick scattering layer feature a whiteness with a reflectance of 90%. Even 9 µm thin scattering layers appear white with a reflectance above 57%. The transport mean free path in the artificial films is between 3.5 µm and 4 µm being close to the evolutionary optimised natural prototype. The bio-inspired white films do not lose their whiteness during further shaping, allowing for various applications. Nature Publishing Group 2017-04-21 /pmc/articles/PMC5399467/ /pubmed/28429805 http://dx.doi.org/10.1038/srep46637 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ 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 to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Syurik, Julia
Siddique, Radwanul Hasan
Dollmann, Antje
Gomard, Guillaume
Schneider, Marc
Worgull, Matthias
Wiegand, Gabriele
Hölscher, Hendrik
Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces
title Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces
title_full Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces
title_fullStr Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces
title_full_unstemmed Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces
title_short Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces
title_sort bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5399467/
https://www.ncbi.nlm.nih.gov/pubmed/28429805
http://dx.doi.org/10.1038/srep46637
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