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Cited by 1,635

The DOI matches its Crossref record; 49 of the 49 references it cites were found in a registry or an index.

Plasmofluidic single-molecule surface-enhanced Raman scattering from dynamic assembly of plasmonic nanoparticles

Open access
Patra, Partha Pratim, Chikkaraddy, Rohit, Tripathi, Ravi P. N., Dasgupta, Arindam, Kumar, G. V. Pavan·2014·Nature Communications
DOI 10.1038/ncomms5357
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Abstract

Single-molecule surface-enhanced Raman scattering (SM-SERS) is one of the vital applications of plasmonic nanoparticles. The SM-SERS sensitivity critically depends on plasmonic hot-spots created at the vicinity of such nanoparticles. In conventional fluid-phase SM-SERS experiments, plasmonic hot-spots are facilitated by chemical aggregation of nanoparticles. Such aggregation is usually irreversible, and hence, nanoparticles cannot be re-dispersed in the fluid for further use. Here, we show how to combine SM-SERS with plasmon polariton-assisted, reversible assembly of plasmonic nanoparticles at an unstructured metal–fluid interface. One of the unique features of our method is that we use a single evanescent-wave optical excitation for nanoparticle assembly, manipulation and SM-SERS measurements. Furthermore, by utilizing dual excitation of plasmons at metal–fluid interface, we create interacting assemblies of metal nanoparticles, which may be further harnessed in dynamic lithography of dispersed nanostructures. Our work will have implications in realizing optically addressable, plasmofluidic, single-molecule detection platforms. Plasmonic hot-spot generation in solution is not reversible for single-molecule surface-enhanced Raman scattering, which limits its applications. Patra et al.tackle this problem by integrating this technique with thermo-plasmon-assisted reconfiguration of nanoparticles at a metal–fluid interface.

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Metadata

Authors
Patra, P. P., Chikkaraddy, R., Tripathi, R. P. N., Dasgupta, A., & Kumar, G. V. P.
Venue
Nature Communications
Publisher
Springer Science and Business Media LLC
Published
2014-07-07
Volume
5
Issue
1
Pages
4357-4357
ISSN
2041-1723 (ISSN-L)
DOI
10.1038/ncomms5357
OpenAlex
W2018658742
Cited by
1,635
References
49
FWCI
52.52
Type
journal article
Language
en
Open access
bronze

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