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

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

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

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
Article number113411
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number11
DOIs
Publication statusPublished - Sep 29 2009

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Nanorods
Gold
nanorods
Electron beams
energy dissipation
electron beams
gold
Photoexcitation
Electron energy loss spectroscopy
Electromagnetic fields
Energy dissipation
energy distribution
electromagnetic fields
Electron microscopes
electron microscopes
electron energy
dipoles
Nanoparticles
Imaging techniques
nanoparticles

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Electron-beam mapping of plasmon resonances in electromagnetically interacting gold nanorods. / N'Gom, Moussa; Li, Shuzhou; Schatz, George C; Erni, Rolf; Agarwal, Ashish; Kotov, Nicholas; Norris, Theodore B.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 11, 113411, 29.09.2009.

Research output: Contribution to journalArticle

N'Gom, Moussa ; Li, Shuzhou ; Schatz, George C ; Erni, Rolf ; Agarwal, Ashish ; Kotov, Nicholas ; Norris, Theodore B. / Electron-beam mapping of plasmon resonances in electromagnetically interacting gold nanorods. In: Physical Review B - Condensed Matter and Materials Physics. 2009 ; Vol. 80, No. 11.
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