17 May 2011 Gold nanostructures using tobacco mosaic viruses for optical metamaterials
Author Affiliations +
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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mime Kobayashi, Mime Kobayashi, Ichiro Yamashita, Ichiro Yamashita, Yukiharu Uraoka, Yukiharu Uraoka, Kiyotaka Shiba, Kiyotaka Shiba, Satoshi Tomita, Satoshi Tomita, "Gold nanostructures using tobacco mosaic viruses for optical metamaterials", Proc. SPIE 8070, Metamaterials VI, 80700C (17 May 2011); doi: 10.1117/12.886652; https://doi.org/10.1117/12.886652

Back to Top