Mapping localized surface plasmons within silver nanocubes using cathodoluminescence hyperspectral imaging

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Abstract

Localized surface plasmons within silver nanocubes less than 50 nm in size are investigated using high resolution cathodoluminescence hyperspectral imaging. Multivariate statistical analysis of the multidimensional luminescence dataset allows both the identification of distinct spectral features in the emission and the mapping of their spatial distribution. These results show a 490 nm peak emitted from the cube faces, with shorter wavelength luminescence coming from the vertices and edges; this provides direct experimental confirmation of theoretical predictions.
Original languageEnglish
Pages (from-to)14031–14035
Number of pages5
JournalJournal of Physical Chemistry C
Volume115
Issue number29
Early online date27 Jun 2011
DOIs
Publication statusPublished - 28 Jul 2011

Keywords

  • nanocube
  • hyperspectral
  • cathodoluminescence
  • plasmon
  • surface

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