Optics and Spectroscopy

, Volume 106, Issue 4, pp 545–548 | Cite as

Optical method for determining the shape anisotropy of sodium nanoparticles in an island film

Condensed-Matter Spectroscopy

Abstract

The optical anisotropy of nanoparticle ensembles on transparent dielectric substrates is studied by fluctuation-polarization microscopy. The method is based on measuring fluctuations in the optical characteristics of small areas of a film. The hypothesis that the resonance absorption peaks correspond to the plasma oscillation modes in different directions of sodium particles, which are simulated by three-axial ellipsoids, is confirmed by the frequency dispersion of the polarization signal.

PACS numbers

42.25.Bs 78.20.-e 42.87.-d 

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References

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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • T. A. Vartanyan
    • 1
  • A. E. Logunov
    • 1
  • V. V. Khromov
    • 1
  1. 1.Center for Information Optical TechnologiesSt. Petersburg State University of Information Technologies, Mechanics, and OpticsSt. PetersburgRussia

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