Nano Archive

Creating hot nanoparticle pairs for surface-enhanced Raman spectroscopy through optical manipulation

Svedberg, Fredrik and Li, Zhipeng and Xu, Hongxing and Kall, Mikael (2006) Creating hot nanoparticle pairs for surface-enhanced Raman spectroscopy through optical manipulation. NANO LETTERS, 6 (12). pp. 2639-2641.

Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.

Official URL: http://dx.doi.org/10.1021/nl062101m

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 similar to 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.

Item Type:Article
Subjects:Physical Science > Nano objects
Material Science > Nanochemistry
ID Code:2592
Deposited By:Anuj Seth
Deposited On:12 Jan 2009 09:04
Last Modified:20 Jan 2009 11:49

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