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Nano Lett. 2008 Nov;8(11):3983-8. doi: 10.1021/nl802509r. Epub 2008 Oct 3.

Symmetry breaking in plasmonic nanocavities: subradiant LSPR sensing and a tunable Fano resonance.

Author information

  • 1Laboratory for Nanophotonics, Department of Physics and Astronomy, M.S. 61, Rice University, Houston, Texas 77005-1892, USA.

Abstract

A metallic nanostructure consisting of a disk inside a thin ring supports superradiant and very narrow subradiant modes. Symmetry breaking in this structure enables a coupling between plasmon modes of differing multipolar order, resulting in a tunable Fano resonance. The LSPR sensitivities of the subradiant and Fano resonances are predicted to be among the largest yet for individual nanostructures.

PMID:
18831572
[PubMed - indexed for MEDLINE]

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