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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 9, Iss. 8 — Aug. 10, 2011
  • pp: 082901–082901

Single-molecule surface-enhanced Raman scattering of R6G in aqueous environment under non-resonance conditions

Enzhong Tan, Penggang Yin, Lidong Li, and Lin Guo  »View Author Affiliations

Chinese Optics Letters, Vol. 9, Issue 8, pp. 082901-082901 (2011)

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The single-molecule surface-enhanced Raman scattering (SERS) spectra of Rhodamine 6G (R6G) in an aqueous environment under non-resonance conditions are studied. Series of spectra are recorded in timemapping mode, and intensity fluctuations of SERS signals and spectral diffusion are observed. The correlations between the presence frequency of SERS spectra and number of hot spots as well as the quantity of molecules in scattering volume are examined thoroughly. The results indicate that only molecules located at hot spots produce good signal-to-noise ratio Raman spectra and the origin of fluctuating SERS signals are mainly ascribed to the movement of hot spots.

© 2011 Chinese Optics Letters

OCIS Codes
(290.0290) Scattering : Scattering
(300.0300) Spectroscopy : Spectroscopy

Enzhong Tan, Penggang Yin, Lidong Li, and Lin Guo, "Single-molecule surface-enhanced Raman scattering of R6G in aqueous environment under non-resonance conditions," Chin. Opt. Lett. 9, 082901-082901 (2011)

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