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The European Physical Journal D

, Volume 43, Issue 1–3, pp 271–274 | Cite as

Optical extinction spectroscopy of single silver nanoparticles

  • P. Billaud
  • J.-R. Huntzinger
  • E. Cottancin
  • J. Lermé
  • M. Pellarin
  • L. Arnaud
  • M. Broyer
  • N. Del Fatti
  • F. Vallée
Optical Properties

Abstract.

The extinction spectrum of single silver nanoparticles with size ranging from 20 to 80 nm is investigated with the spatial modulation spectroscopy technique using either a tunable laser or a white lamp as the broadband source. Results are in good agreement with the prediction of the Mie theory, permitting to extract the nanoparticle size from the measured absolute value of the optical extinction cross-section. In contrast, the deduced refractive index of the nanoparticle environment and the reduction of the electron mean free path show a large dependence on the precise value of the bulk silver dielectric function.

PACS.

78.67.-n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures 78.67.Bf Nanocrystals and nanoparticles 78.40.-q Absorption and reflection spectra: visible and ultraviolet 78.40.Kc Metals, semimetals, and alloys 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  • P. Billaud
    • 1
  • J.-R. Huntzinger
    • 1
  • E. Cottancin
    • 1
  • J. Lermé
    • 1
  • M. Pellarin
    • 1
  • L. Arnaud
    • 1
  • M. Broyer
    • 1
  • N. Del Fatti
    • 1
    • 2
  • F. Vallée
    • 1
    • 2
  1. 1.LASIM, CNRS, Université Lyon 1VilleurbanneFrance
  2. 2.CPMOH, CNRS, Université Bordeaux 1TalenceFrance

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