Ring-type plasmon resonance in metallic nanoshells

Boris Apter, Oren Guilatt, Uzi Efron

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A simple, approximate theoretical model of surface plasmon resonance in two-dimensional metal nanoshells is developed. The model is based on the concept of short-range surface plasmons propagating around closed circular metal nanotubes. In this model, the plasmon resonance in a metal nanotube is treated as a propagating, self-interfering plasmonic wave, in a ring-type resonance, at plasmonic wavelengths matching an integer fraction of the nanotube's effective circumference. The model is validated by detailed computer simulations based on the finite-difference time-domain method and is shown to be in full agreement with the widely used plasmon hybridization model, which is based on the quasi-static approximation.

Original languageEnglish
Pages (from-to)5457-5464
Number of pages8
JournalApplied Optics
Volume50
Issue number28
DOIs
StatePublished - 1 Oct 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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