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Tuning localized surface resonances in graphene based Au nanosphere dimer antenna

  • Xi'an Jiaotong University

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

3 Scopus citations

Abstract

The tunable localized surface plasmons in novel antenna of Au nanosphere dimer coated by graphene is studied theoretically. We demonstrate the electronic tuning of graphene based Au nanosphere antenna via modifying the Femi level of graphene for realizing active tunable localized surface plasmons. It is found that localized electronic field shows an evident increasing, as the graphene layers increase. The resuts are explained as the more evidently enhanced resonance of localized surface plasmons for multilayer graphene than monolayer graphene nanoantenna when the incident light matches to the resonance wavelength of the Au-graphene hybrid system. In addition, it is revealed there is observable blue-shift for the resonance wavelength when the graphene layers get increased. The study provides basic understanding for tuning graphene based on Au nanosphere antenna for a wide range of applications such as single-molecule fluorescence, SERS and photothermal therapy.

Original languageEnglish
Title of host publicationThird International Conference on Photonics and Optical Engineering
EditorsAiling Tian
PublisherSPIE
ISBN (Electronic)9781510627796
DOIs
StatePublished - 2019
Event3rd International Conference on Photonics and Optical Engineering - Xi'an, China
Duration: 5 Dec 20188 Dec 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11052
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference3rd International Conference on Photonics and Optical Engineering
Country/TerritoryChina
CityXi'an
Period5/12/188/12/18

Keywords

  • Au
  • graphene
  • localized surface plasmons
  • nanosphere dimer antenna
  • the active tuning

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