Spectral bounds on plasmon resonances for Ag and Au prolate and oblate nanospheroids.


Journal Article

Analytical expressions for the plasmon resonance frequencies of prolate and oblate spheroids and their dependence on ellipticity have been derived, and approximate bounds on these frequencies established. These formulas may be useful in tuning the plasmon resonance within certain limits. With increasing aspect ratio, the prolate spheroid resonance is red shifted relative to a sphere with no lower limit under the assumptions of a Drude dispersion model. On the other hand, the oblate resonances are blue shifted as the spheroid becomes increasingly flat, but up to a limit.

Full Text

Duke Authors

Cited Authors

  • Norton, SJ; Vo-Dinh, T

Published Date

  • September 2008

Published In

Volume / Issue

  • 2 /

PubMed ID

  • 23977404

Pubmed Central ID

  • 23977404

Electronic International Standard Serial Number (EISSN)

  • 1934-2608

International Standard Serial Number (ISSN)

  • 1934-2608

Digital Object Identifier (DOI)

  • 10.1117/1.3001731


  • eng