| Literature DB >> 16483189 |
David P Fromm1, Arvind Sundaramurthy, Anika Kinkhabwala, P James Schuck, Gordon S Kino, W E Moerner.
Abstract
Single metallic bowtie nanoantennas provide a controllable environment for surface-enhanced Raman scattering (SERS) of adsorbed molecules. Bowties have experimentally measured electromagnetic enhancements, enabling estimation of chemical enhancement for both the bulk and the few-molecule regime. Strong fluctuations of selected Raman lines imply that a small number of p-mercaptoaniline molecules on a single bowtie show chemical enhancement >10(7), much larger than previously believed, likely due to charge transfer between the Au surface and the molecule. This chemical sensitivity of SERS has significant implications for ultra-sensitive detection of single molecules.Entities:
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Year: 2006 PMID： 16483189 PMCID： PMC1513182 DOI： 10.1063/1.2167649
Source DB: PubMed Journal: J Chem Phys ISSN： 0021-9606 Impact factor: 3.488