| Literature DB >> 20942444 |
Srujan K Dondapati1, Tapan K Sau, Calin Hrelescu, Thomas A Klar, Fernando D Stefani, Jochen Feldmann.
Abstract
Gold nanostars provide high sensitivity for single nanoparticle label-free biosensing. The nanostars present multiple plasmon resonances of which the lower energy ones, corresponding to the nanostar tips and core-tip interactions, are the most sensitive to environmental changes. Streptavidin molecules are detected upon binding to individual, biotin-modified gold nanostars by spectral shifts in the plasmon resonances. Concentrations as low as 0.1 nM produce a shift of the tip related plasmon resonances of about 2.3 nm (5.3 meV).Entities:
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Year: 2010 PMID： 20942444 DOI： 10.1021/nn100760f
Source DB: PubMed Journal: ACS Nano ISSN： 1936-0851 Impact factor: 15.881