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Proceedings Paper

Gold nanostructures using tobacco mosaic viruses for optical metamaterials
Author(s): Mime Kobayashi; Ichiro Yamashita; Yukiharu Uraoka; Kiyotaka Shiba; Satoshi Tomita
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Paper Abstract

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.

Paper Details

Date Published: 17 May 2011
PDF: 9 pages
Proc. SPIE 8070, Metamaterials VI, 80700C (17 May 2011); doi: 10.1117/12.886652
Show Author Affiliations
Mime Kobayashi, Japanese Foundation for Cancer Research (Japan)
Nara Institute of Science and Technology (Japan)
Japan Science and Technology Agency (Japan)
Ichiro Yamashita, Nara Institute of Science and Technology (Japan)
Japan Science and Technology Agency (Japan)
Yukiharu Uraoka, Nara Institute of Science and Technology (Japan)
Japan Science and Technology Agency (Japan)
Kiyotaka Shiba, Japanese Foundation for Cancer Research (Japan)
Japan Science and Technology Agency (Japan)
Satoshi Tomita, Nara Institute of Science and Technology (Japan)
Japan Science and Technology Agency (Japan)


Published in SPIE Proceedings Vol. 8070:
Metamaterials VI
Vladimir Kuzmiak; Peter Markos; Tomasz Szoplik, Editor(s)

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