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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 12 — Jun. 15, 2012
  • pp: 2256–2258

Near-field Raman spectroscopy of biological nanomaterials by in situ laser-induced synthesis of tip-enhanced Raman spectroscopy tips

Faris Sinjab, Banyat Lekprasert, Richard A. J. Woolley, Clive J. Roberts, Saul J. B. Tendler, and Ioan Notingher  »View Author Affiliations


Optics Letters, Vol. 37, Issue 12, pp. 2256-2258 (2012)
http://dx.doi.org/10.1364/OL.37.002256


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Abstract

We report a new approach in tip-enhanced Raman spectroscopy (TERS) in which TERS-active tips with enhancement factors of 105× can be rapidly (1–3 min) produced in situ by laser-induced synthesis of silver nanoparticles at the tip apex. The technique minimizes the risks of tip contamination and damage during handling and provides in situ feedback control, which allows the prediction of the tip performance. We show that TERS tips produced by this technique enable the measurement of spatially resolved TERS spectra of self-assembled peptide nanotubes with a spatial resolution of 20nm.

© 2012 Optical Society of America

OCIS Codes
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(300.6450) Spectroscopy : Spectroscopy, Raman
(180.4243) Microscopy : Near-field microscopy

ToC Category:
Microscopy

History
Original Manuscript: December 19, 2011
Revised Manuscript: April 18, 2012
Manuscript Accepted: April 18, 2012
Published: June 6, 2012

Virtual Issues
Vol. 7, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Faris Sinjab, Banyat Lekprasert, Richard A. J. Woolley, Clive J. Roberts, Saul J. B. Tendler, and Ioan Notingher, "Near-field Raman spectroscopy of biological nanomaterials by in situ laser-induced synthesis of tip-enhanced Raman spectroscopy tips," Opt. Lett. 37, 2256-2258 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-12-2256

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