Controlling the optical spectra of gold nano-islands by changing the aspect ratio and the inter-islands distance: Theory and experiment

Yakov M. Strelniker, Yafit Fleger, Michael Rosenbluh, David J. Bergman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The absorption spectrum of a dielectric film with periodic array of metallic islands of different shapes and different mutual distances was studied analytically, numerically, and experimentally. We show that the positions of the surface plasmon resonances depend on the nano-structural details. We propose two ways of controlling plasmon resonance frequency: changing the aspect ratio of the elliptical or rectangular islands and changing their mutual distances. A new analytical asymptotic approach for calculating the optical properties of such plasmonic systems is developed. The results of our analytical and numerical studies are in good qualitative agreement with experiment.

Original languageEnglish
Title of host publicationPlasmonics
Subtitle of host publicationMetallic Nanostructures and Their Optical Properties VIII
DOIs
StatePublished - 2010
EventPlasmonics: Metallic Nanostructures and Their Optical Properties VIII - San Diego, CA, United States
Duration: 1 Aug 20105 Aug 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7757
ISSN (Print)0277-786X

Conference

ConferencePlasmonics: Metallic Nanostructures and Their Optical Properties VIII
Country/TerritoryUnited States
CitySan Diego, CA
Period1/08/105/08/10

Keywords

  • Composite medium
  • Coordinate transformation
  • Macroscopic response
  • Plasmonics

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