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Surface-enhanced-Raman-scattering-inducing nanoprobe for spectrochemical analysis.

Publication ,  Journal Article
Stokes, DL; Chi, Z; Vo-Dinh, T
Published in: Applied spectroscopy
March 2004

This paper describes a new nanoprobe that induces the surface-enhanced Raman scattering (SERS) effect when brought into contact with chemicals on any type of surface. The SERS-inducing probe was fabricated from an optical fiber that was tapered to a tip 100 nm in diameter. A thin layer of silver islands was applied to the tip of the tapered fiber via thermal evaporation to induce the SERS effect. The small scale of the tip may be amenable to localized, nondestructive SERS-based analyses of surfaces with high spatial selectivity. Because the contact probe itself induces the SERS effect, no modification of the sample is required. Direct analysis at submicrometer spatial selectivity is therefore possible for analyte compounds on any type of surface. Various optimization studies and preliminary evaluations were performed. A 10-nm silver thickness was determined to yield the optimum SERS effect. A 25% relative standard deviation in SERS signal was observed for five different probe tips. As a demonstration of the SERS-inducing capability of the probe, Raman spectra were recorded for glass surfaces coated with brilliant cresyl blue and p-aminobenzoic acid before and during contact with the SERS-inducing nanoprobe.

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Published In

Applied spectroscopy

DOI

EISSN

1943-3530

ISSN

0003-7028

Publication Date

March 2004

Volume

58

Issue

3

Start / End Page

292 / 298

Related Subject Headings

  • Surface Properties
  • Spectrum Analysis, Raman
  • Silver
  • Reproducibility of Results
  • Optical Fibers
  • Nanotechnology
  • Lasers
  • Glass
  • Fiber Optic Technology
  • Equipment Design
 

Citation

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ICMJE
MLA
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Stokes, D. L., Chi, Z., & Vo-Dinh, T. (2004). Surface-enhanced-Raman-scattering-inducing nanoprobe for spectrochemical analysis. Applied Spectroscopy, 58(3), 292–298. https://doi.org/10.1366/000370204322886636
Stokes, David L., Zhenhuan Chi, and Tuan Vo-Dinh. “Surface-enhanced-Raman-scattering-inducing nanoprobe for spectrochemical analysis.Applied Spectroscopy 58, no. 3 (March 2004): 292–98. https://doi.org/10.1366/000370204322886636.
Stokes DL, Chi Z, Vo-Dinh T. Surface-enhanced-Raman-scattering-inducing nanoprobe for spectrochemical analysis. Applied spectroscopy. 2004 Mar;58(3):292–8.
Stokes, David L., et al. “Surface-enhanced-Raman-scattering-inducing nanoprobe for spectrochemical analysis.Applied Spectroscopy, vol. 58, no. 3, Mar. 2004, pp. 292–98. Epmc, doi:10.1366/000370204322886636.
Stokes DL, Chi Z, Vo-Dinh T. Surface-enhanced-Raman-scattering-inducing nanoprobe for spectrochemical analysis. Applied spectroscopy. 2004 Mar;58(3):292–298.
Journal cover image

Published In

Applied spectroscopy

DOI

EISSN

1943-3530

ISSN

0003-7028

Publication Date

March 2004

Volume

58

Issue

3

Start / End Page

292 / 298

Related Subject Headings

  • Surface Properties
  • Spectrum Analysis, Raman
  • Silver
  • Reproducibility of Results
  • Optical Fibers
  • Nanotechnology
  • Lasers
  • Glass
  • Fiber Optic Technology
  • Equipment Design