期刊
CARBON
卷 82, 期 -, 页码 229-237出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2014.10.066
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-
资金
- National Research Foundation of Korea [2014R1A2A2A01006720] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Using graphene metamaterial (MM) patterns, the tunable resonant properties of graphene-SiO2/Si (GSiO(2)Si) structures deposited on flexible polymer substrates have been theoretically investigated in the terahertz regime. This study shows that the tuning mechanism of the GSiO(2)Si structure mainly depends on dipolar resonance, which is different from the conventional metallic MM structure based on the LC resonance. For graphene MM structures, the resonant transmission curves can be tuned over a wide range by controlling applied electric fields. The modulation depth of transmission is about 80%. As the Fermi level of the graphene layer increases, the resonant transmission become stronger, and the resonant dips significantly shift to higher frequency. (C) 2014 Elsevier Ltd. All rights reserved.
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