Gold nanostructures using tobacco mosaic viruses for optical metamaterials

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

doi:10.1117/12.886652

17 May 2011 Gold nanostructures using tobacco mosaic viruses for optical metamaterials

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

Proceedings Volume 8070, Metamaterials VI; 80700C (2011) https://doi.org/10.1117/12.886652
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

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.

Citation Download Citation

Mime Kobayashi, Ichiro Yamashita, Yukiharu Uraoka, Kiyotaka Shiba, and Satoshi Tomita "Gold nanostructures using tobacco mosaic viruses for optical metamaterials", Proc. SPIE 8070, Metamaterials VI, 80700C (17 May 2011); https://doi.org/10.1117/12.886652

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