Biometamaterials: Black Ultrathin Gold Film Fabricated on Lotus Leaf

We report on a black metamaterial of gold fabricated on a lotus leaf that was used as a template. In spite of the extremely thin gold coating (10-nm thick) on the lotus leaf, the surface shows reflectivity below 0.01 over the entire visible spectral range. Finite-difference time-domain (FDTD) calcul...

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Detalles Bibliográficos
Autores principales: Ebihara, Yuusuke, Ota, Ryoichi, Noriki, Takahiro, Shimojo, Masayuki, Kajikawa, Kotaro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4632130/
https://www.ncbi.nlm.nih.gov/pubmed/26530514
http://dx.doi.org/10.1038/srep15992
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author Ebihara, Yuusuke
Ota, Ryoichi
Noriki, Takahiro
Shimojo, Masayuki
Kajikawa, Kotaro
author_facet Ebihara, Yuusuke
Ota, Ryoichi
Noriki, Takahiro
Shimojo, Masayuki
Kajikawa, Kotaro
author_sort Ebihara, Yuusuke
collection PubMed
description We report on a black metamaterial of gold fabricated on a lotus leaf that was used as a template. In spite of the extremely thin gold coating (10-nm thick) on the lotus leaf, the surface shows reflectivity below 0.01 over the entire visible spectral range. Finite-difference time-domain (FDTD) calculations suggest that the low reflectivity stems from the secondary structures on the lotus leaf, where randomly oriented nanorods are distributed.
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spelling pubmed-46321302015-11-05 Biometamaterials: Black Ultrathin Gold Film Fabricated on Lotus Leaf Ebihara, Yuusuke Ota, Ryoichi Noriki, Takahiro Shimojo, Masayuki Kajikawa, Kotaro Sci Rep Article We report on a black metamaterial of gold fabricated on a lotus leaf that was used as a template. In spite of the extremely thin gold coating (10-nm thick) on the lotus leaf, the surface shows reflectivity below 0.01 over the entire visible spectral range. Finite-difference time-domain (FDTD) calculations suggest that the low reflectivity stems from the secondary structures on the lotus leaf, where randomly oriented nanorods are distributed. Nature Publishing Group 2015-11-04 /pmc/articles/PMC4632130/ /pubmed/26530514 http://dx.doi.org/10.1038/srep15992 Text en Copyright © 2015, Macmillan Publishers Limited 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
Ebihara, Yuusuke
Ota, Ryoichi
Noriki, Takahiro
Shimojo, Masayuki
Kajikawa, Kotaro
Biometamaterials: Black Ultrathin Gold Film Fabricated on Lotus Leaf
title Biometamaterials: Black Ultrathin Gold Film Fabricated on Lotus Leaf
title_full Biometamaterials: Black Ultrathin Gold Film Fabricated on Lotus Leaf
title_fullStr Biometamaterials: Black Ultrathin Gold Film Fabricated on Lotus Leaf
title_full_unstemmed Biometamaterials: Black Ultrathin Gold Film Fabricated on Lotus Leaf
title_short Biometamaterials: Black Ultrathin Gold Film Fabricated on Lotus Leaf
title_sort biometamaterials: black ultrathin gold film fabricated on lotus leaf
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4632130/
https://www.ncbi.nlm.nih.gov/pubmed/26530514
http://dx.doi.org/10.1038/srep15992
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