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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 60, Iss. 9 — Sep. 1, 2006
  • pp: 989–993

Hole-Enhanced Raman Scattering

John T. Bahns, Funing Yan, Dengli Qiu, Rong Wang, and Liaohai Chen

Applied Spectroscopy, Vol. 60, Issue 9, pp. 989-993 (2006)


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Abstract

Stokes and anti-Stokes non-resonant hole-enhanced Raman scattering (HERS) spectra with high signal-to-noise ratio (S/N) are reported for the first time for aqueous phase R6G molecules adsorbed onto random nanoholes in thin gold films. Compared to conventional surface-enhanced Raman scattering from nanometric gold colloid particles, HERS exhibits higher strength gain, exceptional reproducibility, simple and reliable substrate preparation, and excellent mechanical stability. By correlating the hole density with Raman scattering gain, we determined optimum HERS gain for 50 nm diameter holes at ∼100 holes/μm2. Providing a Raman substrate with uniform "hot spots", we expect that HERS will make the quantitative Raman analysis of biological molecules possible.

Citation
John T. Bahns, Funing Yan, Dengli Qiu, Rong Wang, and Liaohai Chen, "Hole-Enhanced Raman Scattering," Appl. Spectrosc. 60, 989-993 (2006)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-60-9-989


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