双频带太赫兹超材料吸波体传感器传感特性

庞慧中; 王鑫; 王俊林; 王宗利; 刘苏雅拉图; 田虎强

doi:10.7498/aps.70.20210062

摘要

本文提出了一种双频带太赫兹超材料吸波器, 该超材料吸波器在0.387和0.694 THz两个谐振点的吸收率可达到99%以上, 实现了对入射太赫兹波的“完美吸收”. 该双频带太赫兹超材料吸波体传感器在两个谐振频率处的Q值分别为28.1和29.3, 折射率灵敏度$S(f)$分别为39.5和85 GHz/RIU, 均具有较优的传感特性. 研究结果表明, 对于该太赫兹超材料吸波器来说, 除了可以选用折射率较小的中间介质层材料提高传感特性外, 还可以根据待测物折射率的不同选取相应的待测物厚度来提高传感特性. 本文设计的双频带超材料吸波体传感器可实现谐振频率与待测物质特征频率间的多点匹配, 增加反映被测物质差异的信息量, 从而提升物质探测的准确性和灵敏度. 通过对三种食用油样本的分析, 验证了本文所设计的双频带太赫兹超材料吸波体传感器的实际应用价值. 本次研究丰富了双频带超材料吸波体传感器的种类, 在传感检测领域具有广阔的发展空间.

关键词:

Abstract

The terahertz metamaterial absorber sensor is an important functional device of the metamaterials. It can realize not only the perfect absorption in the incident terahertz wave, but also the detect sample by monitoring the deviation of the absorption frequency of the metamaterial absorber sensor. Dual-band metamaterial absorber sensor has double frequency resonance peak. By matching the characteristic frequency between the sensor and the substance to be measured, the information reflecting the difference of the substance to be measured is increased, to improve the accuracy and sensitivity of material detection. Compared with the traditional metamaterial absorber sensor, the dual-band metamaterial absorber sensor can realize very accurate sensing and detection function through multi-point matching of information. In this paper, a double band terahertz band metamaterial absorber sensor is proposed. The absorption rate of the metamaterial absorber sensor reaches over 99% at 0.387 THz and 0.694 THz frequency point, achieving “perfect absorption”. Through the analysis of a series of materials with different refractive indices to be measured, the suitable sensing range of the designed terahertz metamaterial absorber sensor is obtained. By analyzing the different thickness of the substance to be measured and the different medium layer materials, the thickness of the substance to be measured and the medium layer materials which can improve the sensing performance of the sensor are obtained. In this paper, the sensing identification of edible oil is taken for example to verify that the dual-band terahertz metamaterial absorber sensor designed in this paper can realize high sensitivity and rapid detection, and has a broad development prospect in the field of sensing and detection.

Keywords:

作者及机构信息

内蒙古大学电子信息工程学院, 呼和浩特　010021

通信作者: 王鑫, wangxin219@imu.edu.cn ; 王俊林, wangjunlin@imu.edu.cn ;

基金项目: 国家自然科学基金(批准号: 51965047)、内蒙古自然科学基金(批准号: 2018MS06007)、内蒙古大学2018年高层次人才引进科研启动项目(批准号: 21700-5185128, 21700-5185131)、内蒙古科技攻关项目(批准号: 2020GG0185)资助的课题

Authors and contacts

College of Electronic Information Engineering, Inner Mongolia University, Hohhot 010021, China

Corresponding author: Wang Xin, wangxin219@imu.edu.cn ; Wang Jun-Lin, wangjunlin@imu.edu.cn ;

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 51965047), the Natural Science Foundation of Inner Mongolia Autonomous Region, China (Grant No. 2018MS06007), the 2018High-level Talent Introduction and Research Startup Project of Inner Mongolia University, China (Grant Nos. 21700-5185128, 21700-5185131), and the Science and Technology Research Project of Inner Mongolia Autonomous Region, China (Grant No. 2020GG0185)

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参考文献

[1]	李允植 2012 太赫兹科学与技术原理 (北京: 国防工业出版社) 第1−30页 Lee Y K 2012 Principles of Terahertz Science and Technology (Beijing: National Defense Industry Press) pp1−30 (in Chinese)
[2]	Sun S, He Q, Hao J, Xiao S, Zhou L 2019 Adv. Opt. Photonics 11 380 Google Scholar
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[5]	闫昕, 张兴坊, 梁兰菊, 姚建铨 2014 光谱学与光谱分析 09 2365 Google Scholar Yan X, Zhang X F, Liang L J, Yao J Q 2014 Spectrosc. Spect. Anal. 09 2365 Google Scholar
[6]	高劲松, 王珊珊, 冯晓国, 徐念喜, 赵晶丽, 陈红 2010 物理学报 59 7338 Google Scholar Gao J S, Wang S S, Feng X G, Xu N X, Zhao J L, Chen H 2010 Acta Phys. Sin. 59 7338 Google Scholar
[7]	王秀芝, 高劲松, 徐念喜 2013 物理学报 62 237302 Google Scholar Wang X Z, Gao J S, Xu N X 2013 Acta Phys. Sin. 62 237302 Google Scholar
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[12]	Li M, Li S, Yu Y F, Ni X, Chen R S 2018 Opt. Express 26 24702 Google Scholar
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[14]	丰茂昌, 李勇峰, 张介秋, 王甲富, 王超, 马华, 屈绍波 2018 物理学报 67 198101 Google Scholar Feng M C, Li Y F, Zhang J Q, Wang J F, Wang C, Ma H, Qu S B 2018 Acta Phys. Sin. 67 198101 Google Scholar
[15]	Cai T, Tang S, Wang G, Xu H, Sun S, He Q, Zhou L 2017 Adv. Opt. Mater. 5 1600506 Google Scholar
[16]	Rahimabady M, Statharas E C, Yao K, Mirshekarloo M S, Chen S, Tay F E H 2017 Appl. Phys. Lett. 111 241601 Google Scholar
[17]	Brian B, Sepúlveda B, Alaverdyan Y, Lechuga L M, Käll M 2009 Opt. Express 17 2015 Google Scholar
[18]	Wang W, Yan F P, Tan S Y 2020 Photonics Res. 8 519 Google Scholar
[19]	Meng K, Park S J, Burnett A D 2019 Opt. Express 27 23164 Google Scholar
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[22]	He X Y, Liu F, Lin F T, and Shi W Z 2021 Opt. Lett. 46 472 Google Scholar
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[24]	Peng J, He X Y, Shi C Y Y, Leng J, Lin F T, Liu F, Zhang H, Shi W Z 2020 Phys. E 124 114309 Google Scholar
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施引文献

图 1 双频带太赫兹超材料吸波体传感器结构示意图

Fig. 1. Schematic diagram of dual-band THz MM absorber sensor structure.

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图 2 双频带太赫兹超材料吸波体传感器吸收与反射特性仿真曲线

Fig. 2. Simulated absorption and reflection characteristic curve of dual-band THz MM absorber sensor.

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图 3 (a) 谐振频率${f_1}$处表面电场分布; (b) 谐振频率${f_2}$处表面电场分布

Fig. 3. (a) Surface electric field distribution at the ${f_1}$ resonance frequency; (b) surface electric field distribution at the ${f_2}$ resonance frequency.

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图 4 (a) 谐振频率${f_1}$处表面电流分布; (b) 谐振频率${f_2}$处表面电流分布

Fig. 4. (a) Surface current distribution at the ${f_1}$ resonance frequency; (b) surface current distribution at the ${f_2}$ resonance frequency.

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图 5 (a) 谐振频率${f_1}$处底面电流分布; (b) 谐振频率${f_2}$处底面电流分布

Fig. 5. (a) Undersurface current distribution at the ${f_1}$ resonance frequency; (b) undersurface current distribution at the ${f_2}$ resonance frequency.

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图 6 (a) 谐振频率${f_1}$处磁场分布; (b) 谐振频率${f_2}$处磁场分布

Fig. 6. (a) Magnetic field distribution at the ${f_1}$ resonance frequency; (b) magnetic field distribution at the ${f_2}$ resonance frequency.

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图 7 折射率从$n$ = 1变化到$n$ = 2时双频带太赫兹超材料吸波体的吸收特性仿真曲线

Fig. 7. Simulated absorption characteristic curve of dual-band THz MM absorber with refractive index changes from $n$ = 1 to $n$ = 2.

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图 8 待测分析物折射率从$n$ = 1变化到$n$ = 2时传感器的谐振频率偏移及其线性拟合

Fig. 8. Resonance frequency shift of the sensor and linear fitting with determined refractive index changes from $n$ = 1 to $n$ = 2.

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图 9 (a) 待测分析物折射率从$n$ = 1变化到$n$ = 2时谐振频率${f_1}$偏移量及其线性拟合; (b) 待测分析物折射率从$n$ = 1变化到$n$ = 2时谐振频率${f_2}$偏移量及其线性拟合

Fig. 9. (a) Resonance frequency shifts of ${f_1}$ resonance frequency with refractive index changes from $n$ = 1 to $n$ = 2 and linear fitting; (b) resonance frequency shifts of ${f_2}$ resonance frequency with refractive index changes from $n$ = 1 to $n$ = 2 and linear fitting.

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图 10 待测分析物厚度对传感器折射率频率灵敏度的影响

Fig. 10. Influence of the thickness of the analyte to be measured on the refractive index frequency sensitivity of the sensor.

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图 11 (a) 不同中间介质层材料对传感器谐振频率${f_1}$处偏移量的影响及其线性拟合; (b) 不同中间介质层材料对传感器谐振频率${f_2}$处偏移量的影响及其线性拟合

Fig. 11. (a) Influence of different dielectric layer materials on the resonance frequency ${f_1}$ shift of sensor and linear fitting; (b) influence of different dielectric layer materials on the resonance frequency ${f_2}$ shift of sensor and linear fitting.

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图 12 (a) 传感器检测食用油的谐振频点${f_1}$; (b) 传感器检测食用油的谐振频点${f_2}$

Fig. 12. (a) Sensor resonance frequency ${f_1}$ of detects edible oil; (b) sensor resonance frequency ${f_2}$ of detects edible oil.

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[1]	李允植 2012 太赫兹科学与技术原理 (北京: 国防工业出版社) 第1−30页 Lee Y K 2012 Principles of Terahertz Science and Technology (Beijing: National Defense Industry Press) pp1−30 (in Chinese)
[2]	Sun S, He Q, Hao J, Xiao S, Zhou L 2019 Adv. Opt. Photonics 11 380 Google Scholar
[3]	Su Z, Yin J, Zhao X 2015 Opt. Express 23 1679 Google Scholar
[4]	张玉萍, 李彤彤, 吕欢欢 2015 物理学报 64 117801 Google Scholar Zhang Y P, Li T T, Lv H H 2015 Acta Phys. Sin. 64 117801 Google Scholar
[5]	闫昕, 张兴坊, 梁兰菊, 姚建铨 2014 光谱学与光谱分析 09 2365 Google Scholar Yan X, Zhang X F, Liang L J, Yao J Q 2014 Spectrosc. Spect. Anal. 09 2365 Google Scholar
[6]	高劲松, 王珊珊, 冯晓国, 徐念喜, 赵晶丽, 陈红 2010 物理学报 59 7338 Google Scholar Gao J S, Wang S S, Feng X G, Xu N X, Zhao J L, Chen H 2010 Acta Phys. Sin. 59 7338 Google Scholar
[7]	王秀芝, 高劲松, 徐念喜 2013 物理学报 62 237302 Google Scholar Wang X Z, Gao J S, Xu N X 2013 Acta Phys. Sin. 62 237302 Google Scholar
[8]	Li S Y, Ai X C, Wu R H 2018 Opt. Commun. 428 251 Google Scholar
[9]	Kern D J, Werner D H 2003 Microwave Opt. Technol. Lett. 38 61 Google Scholar
[10]	Moritake Y, Tanaka T 2018 Opt. Express 26 3674 Google Scholar
[11]	Hu T, Strikwerda A C, Liu M 2010 Appl. Phys. Lett. 97 261909 Google Scholar
[12]	Li M, Li S, Yu Y F, Ni X, Chen R S 2018 Opt. Express 26 24702 Google Scholar
[13]	Xu W, Sonkusale S 2013 Appl. Phys. Lett. 103 031902 Google Scholar
[14]	丰茂昌, 李勇峰, 张介秋, 王甲富, 王超, 马华, 屈绍波 2018 物理学报 67 198101 Google Scholar Feng M C, Li Y F, Zhang J Q, Wang J F, Wang C, Ma H, Qu S B 2018 Acta Phys. Sin. 67 198101 Google Scholar
[15]	Cai T, Tang S, Wang G, Xu H, Sun S, He Q, Zhou L 2017 Adv. Opt. Mater. 5 1600506 Google Scholar
[16]	Rahimabady M, Statharas E C, Yao K, Mirshekarloo M S, Chen S, Tay F E H 2017 Appl. Phys. Lett. 111 241601 Google Scholar
[17]	Brian B, Sepúlveda B, Alaverdyan Y, Lechuga L M, Käll M 2009 Opt. Express 17 2015 Google Scholar
[18]	Wang W, Yan F P, Tan S Y 2020 Photonics Res. 8 519 Google Scholar
[19]	Meng K, Park S J, Burnett A D 2019 Opt. Express 27 23164 Google Scholar
[20]	Xiong H, Hong J S, Jin D L 2013 Chin. Phys. B 22 014101 Google Scholar
[21]	Wang X Z, Gao J S, Xu N X, Liu H 2014 Chin. Phys. B 23 047303 Google Scholar
[22]	He X Y, Liu F, Lin F T, and Shi W Z 2021 Opt. Lett. 46 472 Google Scholar
[23]	He X Y, Lin F T, Liu F, Shi W Z 2020 J. Phys. D: Appl. Phys. 53 155105 Google Scholar
[24]	Peng J, He X Y, Shi C Y Y, Leng J, Lin F T, Liu F, Zhang H, Shi W Z 2020 Phys. E 124 114309 Google Scholar
[25]	Hu T, Chieffo Logan R, Brenckle Mark A 2011 Adv. Mater. 23 3197 Google Scholar
[26]	Whitesides G M 2006 Nature 442 368 Google Scholar
[27]	Zhou H, Hu D L, Yang C 2018 Sci. Rep. 8 14801 Google Scholar
[28]	Hu X, Xu G Q, Wen L 2016 Laser Photonics Rev. 10 962 Google Scholar
[29]	Janneh M, De Marcellis A, Palange E 2018 Opt. Commun. 416 152 Google Scholar
[30]	Wang B X, Zhai X, Wang G Z 2015 Appl. Phys. Lett. 117 014504 Google Scholar

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双频带太赫兹超材料吸波体传感器传感特性