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 language | English |
|---|---|
| Article number | 113411 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 80 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Sep 29 2009 |
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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 journal › Article
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TY - JOUR
T1 - Electron-beam mapping of plasmon resonances in electromagnetically interacting gold nanorods
AU - N'Gom, Moussa
AU - Li, Shuzhou
AU - Schatz, George C
AU - Erni, Rolf
AU - Agarwal, Ashish
AU - Kotov, Nicholas
AU - Norris, Theodore B.
PY - 2009/9/29
Y1 - 2009/9/29
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=70350580479&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70350580479&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.80.113411
DO - 10.1103/PhysRevB.80.113411
M3 - Article
AN - SCOPUS:70350580479
VL - 80
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 11
M1 - 113411
ER -