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Issue 22, 2017
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Electromagnetic field coupling characteristics in graphene plasmonic oligomers: from isolated to collective modes

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Abstract

In this paper, we propose a plasmonic tetramer composed of coupled graphene nanodisks. The transformation from the isolated to the collective modes of the proposed structure is investigated by analysing the whispering-gallery modes and extinction spectra with various inter-nanodisk gap distances. In addition, the effect of introducing a central nanodisk into the tetramer on the extinction spectra is explored, which leads to Fano resonance. Furthermore, the refractive index sensing properties of the proposed graphene plasmonic oligomer have been demonstrated. The proposed nanostructures might pave the road toward the application of graphene plasmonic oligomers in fields such as nanophotonics, and chemical or biochemical sensing.

Graphical abstract: Electromagnetic field coupling characteristics in graphene plasmonic oligomers: from isolated to collective modes

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Publication details

The article was received on 18 Mar 2017, accepted on 17 May 2017 and first published on 17 May 2017


Article type: Paper
DOI: 10.1039/C7CP01734K
Citation: Phys. Chem. Chem. Phys., 2017,19, 14671-14679
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    Electromagnetic field coupling characteristics in graphene plasmonic oligomers: from isolated to collective modes

    J. Ren, W. Qiu, H. Chen, P. Qiu, Z. Lin, J. Wang, Q. Kan and J. Pan, Phys. Chem. Chem. Phys., 2017, 19, 14671
    DOI: 10.1039/C7CP01734K

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