期刊
RSC ADVANCES
卷 6, 期 57, 页码 52212-52218出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra21974d
关键词
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资金
- National Natural Science Foundation of China [51575149, 51402075]
- Heilongjiang Province Natural Science Foundation of China [F201309]
- Postdoctoral Science-Research Developmental Foundation of Heilongjiang Province [LBH-Q11082]
- Youth Academic Backbone Support Plan of Heilongjiang Province Ordinary College [1253G026]
- Special Funds of Harbin Innovation Talents in Science and Technology Research [2014RFQXJ031]
- Science Funds for the Young Innovative Talents of HUST [2011F04]
In this paper, we propose an ultrasensitive terahertz sensor based on the complementary graphene metamaterial composed of wire-slot and split-ring resonator slot array structure. The destructive interference between two resonators gives rise to a reflection peak enabling ultrasensitive sensing, and a sensitivity of 177.7 GHz per RIU and FOM of 59.3 can be obtained for the proposed sensor. More importantly, this sensor can not only enhance the absorption of biomolecules and sensing performance, but also dynamically tune the sensing range by shifting the Fermi energy. In addition, the influences of the lateral displacement on the sensing performance are also investigated to improve the sensitivity of the sensor. Therefore, this method opens up opportunities for efficiently sensing several organic and explosive molecules and biomolecules.
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