Single nanowire on a film as an efficient SERS-active platform

Iisun Yoon, Taejoon Kang, Wonjun Choi, Jangbae Kim, Youngdong Yoo, Sang Woo Joo, Q Han Park, Hyotcherl Ihee, Bongsoo Kim

Research output: Contribution to journalArticle

183 Citations (Scopus)

Abstract

Fabricating well-defined and highly reproducible platforms for surface-enhanced Raman scattering (SERS) is very important in developing practical SERS sensors. We report a novel SERS platform composed of a single metallic nanowire (NW) on a metallic film. Optical excitation of this novel sandwich nanostructure provides a line of SERS hot spots (a SERS hot line) at the gap between the NW and the film. This single nanowire on a film (SNOF) architecture can be easily fabricated, and the position of hot spots can be conveniently located in situ by using an optical microscope during the SERS measurement. We show that high-quality SERS spectra from benzenethiol, brilliant cresyl blue, and single-stranded DNA can be obtained on a SNOF with reliable reproducibility, good time stability, and excellent sensitivity, and thus, SNOFs can potentially be employed as effective SERS sensors for label-free biomolecule detection. We also report detailed studies of polarization- and material-dependent SERS enhancement of the SNOF structure.

Original languageEnglish
Pages (from-to)758-762
Number of pages5
JournalJournal of the American Chemical Society
Volume131
Issue number2
DOIs
Publication statusPublished - 2009 Jan 21

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Nanowires
Raman Spectrum Analysis
Raman scattering
Metallic films
Nanostructures
Photoexcitation
Single-Stranded DNA
Sensors
Biomolecules
Surface properties
Labels
Microscopes
DNA
Polarization

ASJC Scopus subject areas

  • Biochemistry
  • Catalysis
  • Colloid and Surface Chemistry
  • Chemistry(all)

Cite this

Yoon, I., Kang, T., Choi, W., Kim, J., Yoo, Y., Joo, S. W., ... Kim, B. (2009). Single nanowire on a film as an efficient SERS-active platform. Journal of the American Chemical Society, 131(2), 758-762. https://doi.org/10.1021/ja807455s

Single nanowire on a film as an efficient SERS-active platform. / Yoon, Iisun; Kang, Taejoon; Choi, Wonjun; Kim, Jangbae; Yoo, Youngdong; Joo, Sang Woo; Park, Q Han; Ihee, Hyotcherl; Kim, Bongsoo.

In: Journal of the American Chemical Society, Vol. 131, No. 2, 21.01.2009, p. 758-762.

Research output: Contribution to journalArticle

Yoon, I, Kang, T, Choi, W, Kim, J, Yoo, Y, Joo, SW, Park, QH, Ihee, H & Kim, B 2009, 'Single nanowire on a film as an efficient SERS-active platform', Journal of the American Chemical Society, vol. 131, no. 2, pp. 758-762. https://doi.org/10.1021/ja807455s
Yoon, Iisun ; Kang, Taejoon ; Choi, Wonjun ; Kim, Jangbae ; Yoo, Youngdong ; Joo, Sang Woo ; Park, Q Han ; Ihee, Hyotcherl ; Kim, Bongsoo. / Single nanowire on a film as an efficient SERS-active platform. In: Journal of the American Chemical Society. 2009 ; Vol. 131, No. 2. pp. 758-762.
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