| Literature DB >> 17163680 |
Fredrik Svedberg1, Zhipeng Li, Hongxing Xu, Mikael Käll.
Abstract
We use optical tweezers to move single silver nanoparticles into near-field contact with immobilized particles, forming isolated surface-enhanced Raman spectroscopy (SERS) active Ag particle dimers. The surface-averaged SERS intensity increases by a factor approximately 20 upon dimerization. Electrodynamics calculations indicate that the final approach between the particles is due to "optical binding". The described methodology may facilitate controlled single molecule SERS analysis.Entities:
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Year: 2006 PMID： 17163680 DOI： 10.1021/nl062101m
Source DB: PubMed Journal: Nano Lett ISSN： 1530-6984 Impact factor: 11.189