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Proceedings Paper

Tuning localized surface resonances in graphene based Au nanosphere dimer antenna
Author(s): Huanrong Fan; Guangqing Du; Dayantha Lankanath; Qing Yang; Feng Liu; Yanhong Dong; Feng Chen; Noor Uddin; Xun Hou
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Paper 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.

Paper Details

Date Published: 24 January 2019
PDF: 9 pages
Proc. SPIE 11052, Third International Conference on Photonics and Optical Engineering, 110521E (24 January 2019); doi: 10.1117/12.2522151
Show Author Affiliations
Huanrong Fan, Xi'an Jiaotong Univ. (China)
Guangqing Du, Xi'an Jiaotong Univ. (China)
Dayantha Lankanath, Xi'an Jiaotong Univ. (China)
Qing Yang, Xi'an Jiaotong Univ. (China)
Feng Liu, Xi'an Jiaotong Univ. (China)
Yanhong Dong, Xi'an Jiaotong Univ. (China)
Feng Chen, Xi'an Jiaotong Univ. (China)
Noor Uddin, Xi'an Jiaotong Univ. (China)
Xun Hou, Xi'an Jiaotong Univ. (China)


Published in SPIE Proceedings Vol. 11052:
Third International Conference on Photonics and Optical Engineering
Ailing Tian, Editor(s)

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