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Edge Mode Coupling within a Plasmonic Nanoparticle.


ABSTRACT: The coupling of plasmonic nanoparticles can strongly modify their optical properties. Here, we show that the coupling of the edges within a single rectangular particle leads to mode splitting and the formation of bonding and antibonding edge modes. We are able to unambiguously designate the modes due to the high spatial resolution of electron microscopy-based electron energy loss spectroscopy and the comparison with numerical simulations. Our results provide simple guidelines for the interpretation and the design of plasmonic mode spectra.

SUBMITTER: Schmidt FP 

PROVIDER: S-EPMC5058635 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Edge Mode Coupling within a Plasmonic Nanoparticle.

Schmidt Franz-Philipp FP   Ditlbacher Harald H   Hohenau Andreas A   Hohenester Ulrich U   Hofer Ferdinand F   Krenn Joachim R JR  

Nano letters 20160720 8


The coupling of plasmonic nanoparticles can strongly modify their optical properties. Here, we show that the coupling of the edges within a single rectangular particle leads to mode splitting and the formation of bonding and antibonding edge modes. We are able to unambiguously designate the modes due to the high spatial resolution of electron microscopy-based electron energy loss spectroscopy and the comparison with numerical simulations. Our results provide simple guidelines for the interpretat  ...[more]

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