A multi-functional tunable terahertz graphene metamaterial based on plasmon-induced transparency

被引：3
|
作者：
Yang, Youpeng [1 ]
Fan, Shuting [1 ]
Zhao, Jingjing [1 ]
Xu, Jinzhuo [1 ]
Zhu, Jianfang [1 ]
Wang, Xiaoran [1 ]
Qian, Zhengfang [1 ]
机构：
[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, shenzhen 518060, Peoples R China
来源：
DIAMOND AND RELATED MATERIALS | 2024年 / 141卷
基金：
中国国家自然科学基金;
关键词：
Graphene; Plasmon-induced transparency; Sensor; Switch; ELECTROMAGNETICALLY INDUCED TRANSPARENCY; HIGH-SENSITIVITY; ANALOG;
D O I：
10.1016/j.diamond.2023.110686
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A graphene terahertz metamaterial composed of multiple square split ring resonators is proposed to realize the excellent functions of sensing and switching based on plasmon-induced transparency (PIT). The switch, operating at multiple frequencies can be easily achieved by adjusting the Fermi level of graphene, corresponding to a maximum amplitude modulation of 89.5 %. When the device is employed as a sensing platform, the multi-PIT effect can improve the sensitivity due to greater interactions between the metamaterial and analytes, leading to a maximum sensitivity of 380 GHz/RIU. These findings suggest that the proposed metamaterial can serve as a multipurpose device with broad applicability.
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页数：7
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