Comparison of EFTEM and STEM EELS plasmon imaging of gold nanoparticles in a monochromated TEM

Bernhard Schaffer*, Werner Grogger, Gerald Kothleitner, Ferdinand Hofer

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We present and compare two different imaging techniques for plasmonic excitations in metallic nanoparticles based on high energy-resolution electron energy-loss spectroscopy in a monochromated transmission electron microscope. We demonstrate that a recently developed monochromated energy-filtering (EFTEM) approach can be used in addition to the well established scanning technique to directly obtain plasmon images in the energy range below 1. eV. The EFTEM technique is described in detail, and a double experiment performed on the same, triangular gold nanoparticle compares equivalent data acquired by both techniques, respectively.

Original languageEnglish
Pages (from-to)1087-1093
Number of pages7
JournalUltramicroscopy
Volume110
Issue number8
DOIs
Publication statusPublished - 1 Jul 2010

Keywords

  • EELS
  • EFTEM
  • Monochromator
  • Nano-particle
  • Plasmon
  • Spectrum-imaging

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Instrumentation

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