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Probing Single Molecules and Single Nanoparticles by Surface-Enhanced Raman Scattering

Nie, Shuming, Emory, Steven R.·1997·Science

Abstract

Optical detection and spectroscopy of single molecules and single nanoparticles have been achieved at room temperature with the use of surface-enhanced Raman scattering. Individual silver colloidal nanoparticles were screened from a large heterogeneous population for special size-dependent properties and were then used to amplify the spectroscopic signatures of adsorbed molecules. For single rhodamine 6G molecules adsorbed on the selected nanoparticles, the intrinsic Raman enhancement factors were on the order of 10 14 to 10 15 , much larger than the ensemble-averaged values derived from conventional measurements. This enormous enhancement leads to vibrational Raman signals that are more intense and more stable than single-molecule fluorescence.

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Crossref · 10.1126/science.275.5303.1102

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Metadata

Authors
Nie, S., & Emory, S. R.
Venue
Science
Published
1997-02-21
Volume
275
Issue
5303
Pages
1102-1106
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2115797520
Cited by
10,238
References
0
FWCI
36.58
Type
journal article
Language
en
Open access
closed

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