|
|
|
|
|
|
| Terahertz Broadband Tunable Metamaterial Absorber Based on Graphene and Vanadium Dioxide |
| LIU Su-ya-la-tu, WANG Zong-li, PANG Hui-zhong, TIAN Hu-qiang, WANG Xin *, WANG Jun-lin* |
College of Electronic and Information Engineering, Inner Mongolia University, Huhhot 010021, China
|
|
|
|
|
Abstract Terahertz metamaterial absorbers, as a kind of important terahertz functional devices, are widely used in biomedical sensing, electromagnetic stealth, military radar and other fields. However, this traditional metamaterial absorber structure has disadvantages such as poor tenability, single function and insufficient performance indexes, which can no longer meet the complex and changeable electromagnetic environment requirements. Therefore, the tunable metamaterial absorber has gradually become a research hotspot in the field of terahertz functional devices. In order to achieve the tuning of the absorption characteristics of the metamaterial absorber, the electromagnetic characteristics of the resonance unit or the substrate material or the geometric size of the metamaterial structural unit are usually adjusted. A terahertz broadband tunable metamaterial absorber based on graphene and vanadium dioxide is proposed in this paper. The absorber consists of a vanadium dioxide resonant layer, a continuous graphene layer and a metal reflector separated by a Topa’s medium. The numerical simulation results show that when the material is in the all-metal state (electrical conductivity of 200 000 S·m-1), and the Fermi energy of graphene is set as 0.1 eV, the absorption bandwidth of more than 90% reaches 2.8 THz. When the Fermi energy of graphene is adjusted to change between 0.1 and 0.3 eV, the operating frequency of the absorber shows an obvious blue shift. The proposed broadband structure can switch freely between the reflector and the absorber when the conductivity of vanadium dioxide varies between 100~200 000 S·m-1 due to the phase transformation characteristics of vanadium dioxide material from the insulating state to the metallic state. In addition, the surface current distribution of the metamaterial absorber at the three perfect absorption peaks of 1.87, 3.04 and 4.16 THz was monitored respectively, and its working mechanism was discussed. The structure designed in this paper realizes the dual control of the absorber’s operating frequency and absorption amplitude through two independent adjustable “switches” of graphene and vanadium dioxide, which provides a new development idea for the design of multifunctional terahertz devices.
|
|
Received: 2021-03-15
Accepted: 2021-06-01
|
|
|
|
Corresponding Authors:
WANG Xin, WANG Jun-lin
E-mail: wangxin219@imu.edu.cn；wangjunlin@imu.edu.cn
|
|
[1] Chen X, Tian Z, Lu Y, et al. Advanced Optical Materials, 2020, 8(3): 1900660.
[2] Karaaslan M, Bağmancı M, Ünal E, et al. Optics Communications, 2017, 392: 31.
[3] Landy N I, Sajuyigbe S, Mock J J, et al. Physical Review Letters, 2008, 100(20): 207402.
[4] Zhang Yong, Duan Junping, Zhang Binzhen, et al. Journal of Alloys and Compounds, 2017, 705: 262.
[5] LI Hui, YU Jiang, CHEN Zhe(李 辉，余 江，陈 哲) . Chinese Journal of Lasers(中国激光), 2020, 47(9): 0903001.
[6] Liao Yanlin, Zhao Yan. Scientific Reports, 2020, 10(1): 1480.
[7] Zhu Weiren, Xiao Fajun, Rukhlenko I D, et al. Optics Express, 2017, 25(5): 5781.
[8] Yao G, Ling F, Yue J, et al. Optics Express, 2016, 24(2): 1518.
[9] Song Zhengyong, Wei Maoliang, Wang Zhisheng, et al. IEEE Photonics Journal, 2019, 11(2): 4600607.
[10] Li Hui, Yu Jiang. OSA Continuum, 2020, 3(8): 2143.
[11] Huang Xin, He Wei, Yang Fan, et al. Optics Express, 2018, 26(20): 25558.
[12] Zhao Yuncheng, Zhang Yaxin, Shi Qiwu, et al. ACS Photonics, 2018, 5(8): 3040.
[13] Xing R, Jian S. Optics & Laser Technology, 2018, 100: 129.
[14] Li J S, Yan D X, Sun J Z. Optical Materials Express, 2019, 9(5): 2067.
[15] Ding Fei, Dai Jin, Chen Yiting, et al. Scientific Reports, 2016, 6: 39445.
|
| [1] |
WAN Mei, ZHANG Jia-le, FANG Ji-yuan, LIU Jian-jun, HONG Zhi, DU Yong*. Terahertz Spectroscopy and DFT Calculations of Isonicotinamide-Glutaric Acid-Pyrazinamide Ternary Cocrystal[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3781-3787. |
| [2] |
WU Jing-zhi1, 2, ZHOU Si-cheng3, JI Bao-qing1, WANG Yan-hong1, 2*, LI Meng-wei2, 3. Porosity Measurement of Tablets Based on Continuous Terahertz Wave[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3360-3364. |
| [3] |
MU Da1, 2, WANG Qi-shu1, 2*, CUI Zong-yu1, 2, REN Jiao-jiao1, 2, ZHANG Dan-dan1, 2, LI Li-juan1, 2, XIN Yin-jie1, 2, ZHOU Tong-yu3. Study on Interference Phenomenon in Terahertz Time Domain
Spectroscopy Nondestructive Testing of Glass Fiber Composites[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(10): 3031-3040. |
| [4] |
LI Yang1, LI Xiao-qi1, YANG Jia-ying1, SUN Li-juan2, CHEN Yuan-yuan1, YU Le1, WU Jing-zhu1*. Visualisation of Starch Distribution in Corn Seeds Based on Terahertz Time-Domain Spectral Reflection Imaging Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2722-2728. |
| [5] |
YU Yang1, ZHANG Zhao-hui1, 2*, ZHAO Xiao-yan1, ZHANG Tian-yao1, LI Ying1, LI Xing-yue1, WU Xian-hao1. Effects of Concave Surface Morphology on the Terahertz Transmission Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2843-2848. |
| [6] |
LIANG Wen-ke, WEI Guang-fen, WANG Ming-hao. Research on Methane Detection Error Caused by Lorentzian Profile Approximation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(06): 1683-1689. |
| [7] |
ZHENG Zhi-jie1, LIN Zhen-heng1, 2*, XIE Hai-he2, NIE Yong-zhong3. The Method of Terahertz Spectral Classification and Identification for Engineering Plastics Based on Convolutional Neural Network[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(05): 1387-1393. |
| [8] |
ZHANG Li-fang1, YANG Yan-xia1, ZHAO Guan-jia1, MA Su-xia1, GUO Xue-mao2. Comparison of Numerical Iterative Algorithms for Two-Dimensional Absorption Spectral Reconstruction[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(05): 1367-1375. |
| [9] |
LIU Hong-yuan1, WU Bin1, 2, JIANG Tao3, YANG Yan-zhao1, WANG Hong-chao1, LI Jing-song1. Study on the Measurement of Absolute Spectral Responsivity of Terahertz Detector[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(04): 1017-1022. |
| [10] |
WANG Yu-ye1, 2, LI Hai-bin1, 2, JIANG Bo-zhou1, 2, GE Mei-lan1, 2, CHEN Tu-nan3, FENG Hua3, WU Bin4ZHU Jun-feng4, XU De-gang1, 2, YAO Jian-quan1, 2. Terahertz Spectroscopic Early Diagnosis of Cerebral Ischemia in Rats[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 788-794. |
| [11] |
ZHANG Le-wen1, 2, WANG Qian-jin1, 3, SUN Peng-shuai1, PANG Tao1, WU Bian1, XIA Hua1, ZHANG Zhi-rong1, 3, 4, 5*. Analysis of Interference Factors and Study of Temperature Correction Method in Gas Detection by Laser Absorption Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 767-773. |
| [12] |
ZHANG Liang1, ZHANG Ran2, CUI Li-li3, LI Tao1, GU Da-yong4, HE Jian-an2*, ZHANG Si-xiang1*. Rapid Modification of Surface Plasmon Resonance Sensor Chip by
Graphene Oxide[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 795-800. |
| [13] |
CHU Zhi-hong1, 2, ZHANG Yi-zhu2, QU Qiu-hong3, ZHAO Jin-wu1, 2, HE Ming-xia1, 2*. Terahertz Spectral Imaging With High Spatial Resolution and High
Visibility[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(02): 356-362. |
| [14] |
LI Qing-jun, SHEN Yan, MENG Qing-hao, WANG Guo-yang, YE Ping, SU Bo*, ZHANG Cun-lin. Terahertz Absorption Characteristics of Potassium Salt Solution Based on Microfluidic Chip[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(02): 363-367. |
| [15] |
ZHANG Tian-yao1, 2, LI Bo-yang1, LI Xing-yue1, LI Ying1, WU Xian-hao1, ZHAO Xiao-yan1, ZHANG Zhao-hui1*. Refractive Index Measurement Using Continuous Wave Terahertz
Frequency-Domain Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(02): 495-502. |
|
|
|
|
