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

Junbo Ren; Guangqing Wang; Weibin Qiu; Zhili Lin; Houbo Chen; Pingping Qiu; Jia-Xian Wang; Qiang Kan; Jiao-Qing Pan

doi:10.3390/nano7090238

Nanomaterials (Aug 2017)

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

Junbo Ren,
Guangqing Wang,
Weibin Qiu,
Zhili Lin,
Houbo Chen,
Pingping Qiu,
Jia-Xian Wang,
Qiang Kan,
Jiao-Qing Pan

Affiliations

Junbo Ren: Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
Guangqing Wang: Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
Weibin Qiu: Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
Zhili Lin: Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
Houbo Chen: Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
Pingping Qiu: Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
Jia-Xian Wang: Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
Qiang Kan: College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100086, China
Jiao-Qing Pan: College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100086, China

DOI: https://doi.org/10.3390/nano7090238
Journal volume & issue: Vol. 7, no. 9
p. 238

Abstract

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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.

Published in Nanomaterials

ISSN: 2079-4991 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: https://www.mdpi.com/journal/nanomaterials

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