Selective excitation of individual plasmonic hotspots at the tips of single gold nanostars

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Calin Hrelescu
  • Tapan K. Sau
  • Frank Jäckel
  • Guillaume Laurent
  • Ludovic Douillard
  • Fabrice Charra

Detail(s)

Original languageEnglish
Pages (from-to)402-407
Journal / PublicationNano Letters
Volume11
Issue number2
Publication statusPublished - 9 Feb 2011
Externally publishedYes

Abstract

Plasmonic hotspots in single gold nanostars are located at the tips and can be excited selectively by laser light as evidenced by photoelectron emission microscopy. Selectivity is achieved through wavelength and polarization of the excitation light. Comparing photoelectron emission intensity and dark-field scattering spectra of the same individual nanostars reveals differences in terms of observable plasmon resonance wavelengths and field enhancements. Differences are explained with the underlying near- and far-field processes of the two techniques. © 2011 American Chemical Society.

Research Area(s)

  • dark-field white light Rayleigh scattering, gold nanostars, Nanoplasmonics, photoelectron emission microscopy

Citation Format(s)

Selective excitation of individual plasmonic hotspots at the tips of single gold nanostars. / Hrelescu, Calin; Sau, Tapan K.; Rogach, Andrey L.; Jäckel, Frank; Laurent, Guillaume; Douillard, Ludovic; Charra, Fabrice.

In: Nano Letters, Vol. 11, No. 2, 09.02.2011, p. 402-407.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review