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Shape matters: Plasmonic nanoparticle shape enhances interaction with dielectric substrate

AuthorsAlbella, Pablo ; García-Cueto, Borja; González, Francisco; Moreno, Fernando
Issue Date2011
PublisherAmerican Chemical Society
CitationNano Letters 11: 3531–3537 (2011)
AbstractNumerical analyses of the ultraviolet and visible plasmonic spectra measured from hemispherical gallium nanostructures on dielectric substrates reveal that resonance frequencies are quite sensitive to illumination angle and polarization in a way that depends on nanostructure size, shape, and substrate. Large, polarization-dependent splittings arise from the broken symmetry of hemispherical gallium nanoparticles on sapphire substrates, inducing strong interactions with the substrate that depend sensitively on the angle of illumination and the nanoparticle diameter.
Identifiersdoi: 10.1021/nl201783v
issn: 1530-6984
Appears in Collections:(CFM) Artículos
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