Nanoscale mapping of plasmon resonances of functional multibranched gold nanoparticles

Alvaro Mayoral, Cesar Magen, Miguel Jose-Yacaman

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The optical response of multibranched gold nanoparticles is studied by means of electron energy-loss spectroscopy (EELS) in aberration corrected STEM mode. In every case the plasmon response is constant and variations in the maxima positions were found to be dependent on the branches aspect ratio. The good spatial resolution combined with the high energy resolution (0.18 eV) of the monochromated electron beam allows mapping the different plasmonic modes along the entire nanoparticles ranging from 0.7 eV up to 2.25 eV.

Original languageEnglish (US)
Pages (from-to)8667-8669
Number of pages3
JournalChemical Communications
Volume48
Issue number69
DOIs
StatePublished - Aug 1 2012
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • General Chemistry
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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