Biometamaterial: Dark ultrathin gold film fabricated on taro leaf

Yuusuke Ebihara, Yuta Sugimachi, Takahiro Noriki, Masayuki Shimojo, Kotaro Kajikawa

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A dark metamaterial of gold thin films is reported fabricated on a taro-leaf surface, used as a template. In spite of gold coating over the taro leaf, the surface is dark and has great light-absorption at the visible wavelengths. Finite-difference time-domain (FDTD) calculations predict the low reflectivity stemming from the nanostructures of a taro leaf, where randomly oriented nanoplates of thin rectangular plates are vertically set on edge.

Original languageEnglish
Pages (from-to)1429-1435
Number of pages7
JournalOptical Materials Express
Issue number5
Publication statusPublished - 2016 May 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials


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