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Proceedings of the National Academy of Sciences of the United States of America
Jul 18, 2006;103 (29): 10856-60.

Symmetry breaking in individual plasmonic nanoparticles.

Hui Wang, Yanpeng Wu, Britt Lassiter, Colleen L Nehl, Jason H Hafner, Peter Nordlander, Naomi J Halas
Author Information
  1. Hui Wang: Department of Chemistry, Laboratory for Nanophotonics, Rice University, Houston, TX 77005, USA.
PMID: 16829573 DOI: 10.1073/pnas.0604003103

Abstract

The plasmon resonances of a concentric metallic nanoshell arise from the hybridization of primitive plasmon modes of the same angular momentum on its inner and outer surfaces. For a nanoshell with an offset core, the reduction in symmetry relaxes these selection rules, allowing for an admixture of dipolar components in all plasmon modes of the particle. This metallodielectric nanostructure with reduced symmetry exhibits a core offset-dependent multipeaked spectrum, seen in single-particle spectroscopic measurements, and exhibits significantly larger local-field enhancements on its external surface than the equivalent concentric spherical nanostructure.

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MeSH Term

Electromagnetic Phenomena
Nanostructures
Spectrum Analysis
Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S.
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Word Cloud

Created with Highcharts 10.0.0plasmonconcentricnanoshellmodescoresymmetrynanostructureexhibitsresonancesmetallicarisehybridizationprimitiveangularmomentuminneroutersurfacesoffsetreductionrelaxesselectionrulesallowingadmixturedipolarcomponentsparticlemetallodielectricreducedoffset-dependentmultipeakedspectrumseensingle-particlespectroscopicmeasurementssignificantlylargerlocal-fieldenhancementsexternalsurfaceequivalentsphericalSymmetrybreakingindividualplasmonicnanoparticles

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