Gold nanostructures using tobacco mosaic viruses for optical metamaterials

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

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.

Original languageEnglish
Title of host publicationMetamaterials VI
DOIs
Publication statusPublished - 2011 Jun 27
Externally publishedYes
EventMetamaterials VI - Prague, Czech Republic
Duration: 2011 Apr 202011 Apr 21

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8070
ISSN (Print)0277-786X

Conference

ConferenceMetamaterials VI
CountryCzech Republic
CityPrague
Period11/4/2011/4/21

Keywords

  • Biological molecules
  • Biomineralization
  • Material-binding peptide
  • Optical metamaterials
  • TMV

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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