Shape matters: plasmonic nanoparticle shape enhances interaction with dielectric substrate.

Journal Article (Journal Article)

Numerical 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.

Full Text

Duke Authors

Cited Authors

  • Albella, P; Garcia-Cueto, B; González, F; Moreno, F; Wu, PC; Kim, T-H; Brown, A; Yang, Y; Everitt, HO; Videen, G

Published Date

  • September 2011

Published In

Volume / Issue

  • 11 / 9

Start / End Page

  • 3531 - 3537

PubMed ID

  • 21848270

Electronic International Standard Serial Number (EISSN)

  • 1530-6992

International Standard Serial Number (ISSN)

  • 1530-6984

Digital Object Identifier (DOI)

  • 10.1021/nl201783v


  • eng