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Large-area topography analysis and near-field Raman spectroscopy using bent fibre probes

  • J. Prikulis*
  • , K. V.G.K. Murty
  • , H. Olin
  • , M. Käll
  • *Corresponding author for this work
  • Chalmers University of Technology

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We present a method for combined far-field Raman imaging, topography analysis and near-field spectroscopy. Surface-enhanced Raman spectra of Rhodamine 6G (R6G) deposited on silver nanoparticles were recorded using a bent fibre aperture-type near-field scanning optical microscope (NSOM) operated in illumination mode. Special measures were taken to enable optical normal-force detection for control of the tip-sample distance. Comparisons between far-field Raman images of R6G-covered Ag particle aggregates with topographic images recorded using atomic force microscopy (AFM) indicate saturation effects due to resonance excitation.

Original languageEnglish
Pages (from-to)269-273
Number of pages5
JournalJournal of Microscopy
Volume210
Issue number3
DOIs
Publication statusPublished - 1 Jun 2003
Externally publishedYes

Keywords

  • Colloidal silver nanoparticles
  • Near-field optics
  • Surface-enhanced Raman spectroscopy

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