Electron-beam mapping of plasmon resonances in electromagnetically interacting gold nanorods

Moussa N'Gom*, Shuzhou Li, George Schatz, Rolf Erni, Ashish Agarwal, Nicholas Kotov, Theodore B. Norris

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

76 Scopus citations


Electron energy-loss spectroscopy and energy-filtered transmission electron-microscope imaging are used to characterize the energy distribution of the surface plasmon of isolated and coupled gold nanorods. Local-field enhancement and spectral shift of the plasmon modes are observed for two interacting nanoparticles. The spatial modes measured by energy loss are shown to share qualitative similarities with the electromagnetic field distribution around gold nanorods induced by optical excitation as simulated using the discrete dipole-approximation method.

Original languageEnglish (US)
Article number113411
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number11
StatePublished - Sep 29 2009

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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