Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 130, Issue 38, Pages 12616-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja8051427
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Funding
- NSF [EEC-0118025, CHE-0414554, BES-0507036]
- Air Force Office of Scientific Research MURI [F49620-02-1-0381]
- DTRA JSTO [FA9550-06-1-0558]
- AFOSR/DARPA [FA9550-08-1-0221]
- NSF MRSEC [DMR-0520513]
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We present here a detailed study of the specific nanoparticle structures that give rise to single-molecule surface-enhanced Raman scattering (SMSERS). A variety of structures are observed, but the simplest are dimers of Ag nanocrystals. We chose one of these structures for detailed study using electrodynamics calculations and found that the electromagnetic SERS enhancement factors of 10(9) are easily obtained and are consistent with single-molecule SERS activity.
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