Abstract
This paper presents an effective method to model and analyze graphene-metamaterial (GM) absorbers by using an equivalent circuit model. A reliable and closed formula to describe the absorption mechanism of the GM structure was derived from this approach. With the obtained expressions, the effect of the graphene chemical potential on the absorber’s resonance frequency is able to be predicted. In order to verify this proposed equivalent circuit method, an absorber consists of metamaterial and graphene was simulated and the physical mechanism was well explained. This method provides an effective way to analyze multilayered GM absorbers for the future.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant Nos. 61501067, 61501068, 61471072, and 61661012), Foundation and Advanced Research Projects of Chongqing Municipal Science and Technology Commission (Grant Nos. Cstc2016jcyjA0377 and Cstc2015jcyjA40001), and Opening Project of Guangxi College Key Laboratory of Microwave and Optical Wave Applications Technology (Grant No. MLLAB2016001).
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Xiong, H., Tang, MC., Li, M. et al. Equivalent Circuit Method Analysis of Graphene-Metamaterial (GM) Absorber. Plasmonics 13, 857–862 (2018). https://doi.org/10.1007/s11468-017-0581-6
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DOI: https://doi.org/10.1007/s11468-017-0581-6