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Plasmonic Fano resonances in compositional heterogenous Al-Au nanorod dimers
WU Botao * #,XUE Yingxian,MA Qiang,LIU Yan,WU E
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062
*Correspondence author
#Submitted by
Subject:
Funding: Doctoral Program of Higher Education Research Fund （No.20110076120019）
Opened online:20 November 2015
Accepted by: none
Citation: WU Botao,XUE Yingxian,MA Qiang.Plasmonic Fano resonances in compositional heterogenous Al-Au nanorod dimers[OL]. [20 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4661332
 
 
We have investigated theoretically the plasmon resonance coupling in compositional heterogenous Al-Au nanorod dimers organized in a close proximity by end-to-end. It has been proved that the destructive interference between the bright dipole mode from Al nanorod and the dark quadrupole mode from Au nanorod nearby results in the appearance of apparent Fano resonance in the extinction spectra. The Fano resonance response on the structural dimension modifications in the proposed nanorod dimers have been estimated and determined. The Al-Au heterogeneous nanorod dimer shows a high sensitivity to the surrounding environment with a local surface plasmon resonance figure of merit of 7.6, which enables its promising applications in plasmonic sensing and detection.
Keywords:Optics; Fano resonance; nanorod dimer; localized surface plasmon resonance
 
 
 

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