期刊
OPTICS EXPRESS
卷 20, 期 22, 页码 24856-24863出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.024856
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资金
- CREST from Japan Science and Technology Agency
- KAKENHI [2311171400, 22109005]
- Kurata Grants
- Grants-in-Aid for Scientific Research [24390468] Funding Source: KAKEN
We demonstrate a chiral meta-molecule in the ultraviolet (UV) and visible (VIS) regions using a complex of Au nanoparticles (NPs) and rod-shaped tobacco mosaic virus (TMV). Au NPs five nm in diameter are uniformly formed on peptide-modified TMV. The peptide-modified TMV with uniform-sized Au NPs has improved dispersion in solution. A negative circular dichroism (CD) peak is produced around 540 nm, at plasmonic resonance wavelength of Au NPs. Additionally, modification of a CD peak in the UV region is observed. Attaching NPs to a virus causes the enhancement and modification of CD peaks in both the UV and VIS regions. Our results open a new avenue for the preparation of three dimensional chiral metamaterials at optical frequencies. (C) 2012 Optical Society of America
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