文章基本信息

标题：Biometamaterials: Black Ultrathin Gold Film Fabricated on Lotus Leaf
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作者：Yuusuke Ebihara ; Ryoichi Ota ; Takahiro Noriki 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
DOI：10.1038/srep15992
出版社：Springer Nature
摘要：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.