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Nanomaterials 2017, 7(9), 238; doi:10.3390/nano7090238

Optimization of the Fano Resonance Lineshape Based on Graphene Plasmonic Hexamer in Mid-Infrared Frequencies

1
Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
2
College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100086, China
3
Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100086, China
*
Author to whom correspondence should be addressed.
Received: 25 July 2017 / Revised: 18 August 2017 / Accepted: 22 August 2017 / Published: 26 August 2017
(This article belongs to the Special Issue Graphene and Nanotube Based Devices)
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Abstract

In this article, the lineshape of Fano-like resonance of graphene plasmonic oligomers is investigated as a function of the parameters of the nanostructures, such as disk size, chemical potential and electron momentum relaxation time in mid-infrared frequencies. Also, the mechanism of the optimization is discussed. Furthermore, the environmental index sensing effect of the proposed structure is revealed, and a figure of merit of 25.58 is achieved with the optimized graphene oligomer. The proposed nanostructure could find applications in the fields of chemical or biochemical sensing. View Full-Text
Keywords: graphene oligomer; surface plasmon; Fano resonance; subgroup decomposition; sensing graphene oligomer; surface plasmon; Fano resonance; subgroup decomposition; sensing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ren, J.; Wang, G.; Qiu, W.; Lin, Z.; Chen, H.; Qiu, P.; Wang, J.-X.; Kan, Q.; Pan, J.-Q. Optimization of the Fano Resonance Lineshape Based on Graphene Plasmonic Hexamer in Mid-Infrared Frequencies. Nanomaterials 2017, 7, 238.

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