Journal
NANO LETTERS
Volume 11, Issue 8, Pages 3482-3488Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl202027h
Keywords
Plasmonics; EELS; STEM; discrete dipole approximation; Rayleigh scattering; multivariate statistical analysis
Categories
Funding
- Oak Ridge National Laboratory
- UT Knoxville
- UT/ORNL Joint Institute for Advanced Materials
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-SC0004792]
- NTU of Singapore MoE [RG 43/10]
- Office of Basic Energy Sciences, U.S. Department of Energy
- Sandia
- United States Department of Energy's (DOE) National Nuclear Security Administration (NNSA) [E-AC0494AL85000]
- DOE BES [DE-SC0004752]
- Office of Basic Energy Sciences, Materials Sciences and Engineering Division, U.S. Department of Energy
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Plasmonics is a rapidly growing field, yet imaging of the plasmonic modes in complex nanoscale architectures is extremely challenging. Here we obtain spatial maps of the localized surface plasmon modes of high-aspect-ratio silver nanorods using electron energy loss spectroscopy (EELS) and correlate to optical data and classical electrodynamics calculations from the exact same particles. EELS mapping is thus demonstrated to be an invaluable technique for elucidating complex and overlapping plasmon modes.
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