Design of a Penta-Band Graphene-Based Terahertz Metamaterial Absorber with Fine Sensing Performance.
Design of a Penta-Band Graphene-Based Terahertz Metamaterial Absorber with Fine Sensing Performance.
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DOI：
10.3390/mi14091802
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发表时间：
2023-09-21
期刊：
影响因子：
3.4
通讯作者：
Sun T
中科院分区：
文献类型：
--
作者：
Lai R;Chen H;Zhou Z;Yi Z;Tang B;Chen J;Yi Y;Tang C;Zhang J;Sun T
This paper presents a new theoretical proposal for a surface plasmon resonance (SPR) terahertz metamaterial absorber with five narrow absorption peaks. The overall structure comprises a sandwich stack consisting of a gold bottom layer, a silica medium, and a single-layer patterned graphene array on top. COMSOL simulation represents that the five absorption peaks under TE polarization are at fI = 1.99 THz (95.82%), fⅡ = 6.00 THz (98.47%), fⅢ = 7.37 THz (98.72%), fⅣ = 8.47 THz (99.87%), and fV = 9.38 THz (97.20%), respectively, which is almost consistent with the absorption performance under TM polarization. In contrast to noble metal absorbers, its absorption rates and resonance frequencies can be dynamically regulated by controlling the Fermi level and relaxation time of graphene. In addition, the device can maintain high absorptivity at 0~50° in TE polarization and 0~40° in TM polarization. The maximum refractive index sensitivity can reach SV = 1.75 THz/RIU, and the maximum figure of merit (FOM) can reach FOMV = 12.774 RIU−1. In conclusion, our design has the properties of dynamic tunability, polarization independence, wide-incident-angle absorption, and fine refractive index sensitivity. We believe that the device has potential applications in photodetectors, active optoelectronic devices, sensors, and other related fields.
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Metasurfaces的最新发展：关注传感应用程序。
DOI：
10.3390/nano13010118
发表时间：
2022-12-26
期刊：
Nanomaterials (Basel, Switzerland)
影响因子：
--
作者：
Kazanskiy NL;Khonina SN;Butt MA
通讯作者：
Butt MA
影响因子：
4.6
作者：
通讯作者：
--
影响因子：
5.3
作者：
Liu, Wei;Liu, Chao;Chu, Paul K.
通讯作者：
Chu, Paul K.
使用多层超材料、集总电阻器和强耦合效应的超宽带和偏振不敏感完美吸收器。
影响因子：
--
作者：
Li SJ;Wu PX;Xu HX;Zhou YL;Cao XY;Han JF;Zhang C;Yang HH;Zhang Z
通讯作者：
Zhang Z
影响因子：
2.9
作者：
Chen, Zihao;Cai, Pinggen;Yi, Yougen
通讯作者：
Yi, Yougen