Hole-enhanced raman scattering

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

doi:10.1366/000370206778397326

Hole-enhanced raman scattering

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

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

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/μm ². Providing a Raman substrate with uniform "hot spots", we expect that HERS will make the quantitative Raman analysis of biological molecules possible.

Original language	English
Pages (from-to)	989-993
Number of pages	5
Journal	Applied Spectroscopy
Volume	60
Issue number	9
DOIs	https://doi.org/10.1366/000370206778397326
State	Published - Sep 2006
Externally published	Yes

Keywords

HERS
Hole-enhanced Raman spectroscopy
Nanohole array
Raman hotspot

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title = "Hole-enhanced raman scattering",

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/μm 2. Providing a Raman substrate with uniform {"}hot spots{"}, we expect that HERS will make the quantitative Raman analysis of biological molecules possible.",

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author = "Bahns, {John T.} and Funing Yan and Dengli Qiu and Rong Wang and Liaohai Chen",

year = "2006",

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AU - Bahns, John T.

AU - Yan, Funing

AU - Qiu, Dengli

AU - Wang, Rong

AU - Chen, Liaohai

PY - 2006/9

Y1 - 2006/9

N2 - 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/μm 2. Providing a Raman substrate with uniform "hot spots", we expect that HERS will make the quantitative Raman analysis of biological molecules possible.

AB - 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/μm 2. Providing a Raman substrate with uniform "hot spots", we expect that HERS will make the quantitative Raman analysis of biological molecules possible.

KW - HERS

KW - Hole-enhanced Raman spectroscopy

KW - Nanohole array

KW - Raman hotspot

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DO - 10.1366/000370206778397326

M3 - Article

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VL - 60

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EP - 993

JO - Applied Spectroscopy

JF - Applied Spectroscopy

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Hole-enhanced raman scattering

Abstract

Keywords

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