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Title: Critical coupling with graphene-based hyperbolic metamaterials
Authors: Xiang, Yuanjiang
Dai, Xiaoyu
Guo, Jun
Zhang, Han
Wen, Shuangchun
Tang, Dingyuan
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2014
Source: Xiang, Y., Dai, X., Guo, J., Zhang, H., Wen, S., & Tang, D. (2014). Critical coupling with graphene-based hyperbolic metamaterials. Scientific Reports, 4.
Series/Report no.: Scientific reports
Abstract: In order to effectively realize and control the critical coupling, a graphene-based hyperbolic metamaterial has been proposed to replace the absorbing thin film in the critically coupled resonance structure. Our calculations demonstrate that the critical coupling effect (near-perfect light absorption) can be achieved at the near-infrared wavelength by using this layered structure, while the critical coupling frequency can be tuned by varying the Fermi energy level of graphene sheets via electrostatic biasing. Moreover, we show that the critical coupling frequency can be tuned by changing the thickness of the dielectric or layer number of the graphene sheets in the unit cell of the graphene-dielectric HMM. The optimization performance has also been indicated, which may offer an opportunity towards the experimental designs of high efficient graphene based critical coupling devices.
ISSN: 2045-2322
DOI: 10.1038/srep05483
Rights: This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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