Gold nanostructures using tobacco mosaic viruses for optical metamaterials

Mime Kobayashi, Ichiro Yamashita, Yukiharu Uraoka, Kiyotaka Shiba, Satoshi Tomita

研究成果: Conference contribution

6 被引用数 (Scopus)


We have succeeded in aligning gold nanoparticles (Au NPs) in three-dimensions using tobacco mosaic virus (TMV) in order to realize new optical properties. TMV is a tube-shaped plant virus about 300 nm in length with an outer- and inner-diameter of 18 nm and 4 nm. We genetically fused material-binding peptides that can promote metal crystallization, namely a gold-binding peptide (GBP) and a titanium-binding peptide (TBP), to the outer-surface of TMV. By reducing potassium chloroaurate with sodium borohydride in the presence of the engineered viruses in 5% acetic acid solution, Au NPs were deposited on the outer-surface of the viruses. Using TBP-fused TMV, NPs of 5 nm were obtained, with a standard deviation smaller than those deposited on wild-type TMV. The diameter of the NPs on GBP-fused TMV was 10 nm. These results indicate that genetically-modified TMVs are promising templates for the construction of optical metamaterials.

ホスト出版物のタイトルMetamaterials VI
出版ステータスPublished - 2011 6 27
イベントMetamaterials VI - Prague, Czech Republic
継続期間: 2011 4 202011 4 21


名前Proceedings of SPIE - The International Society for Optical Engineering


ConferenceMetamaterials VI
CountryCzech Republic

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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