A terahertz metamaterial sensor used for distinguishing glucose concentration

被引:62
作者
Yang, Jun [1 ]
Qi, Limei [1 ,2 ]
Li, Bin [3 ]
Wu, Liqin [4 ]
Shi, Dan [1 ]
Uqaili, Junaid Ahmed [1 ]
Tao, Xiang [1 ]
机构
[1] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing 100876, Peoples R China
[2] Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China
[3] Beijing Res Ctr Intelligent Equipment Agr, Beijing 100097, Peoples R China
[4] Beijing Radiat Ctr, Beijing 100875, Peoples R China
基金
中国国家自然科学基金;
关键词
Metamaterial; Glucose concentration; Terahertz; Sensor; COMPREHENSIVE SURVEY; ANTENNA; DESIGN; BLOOD; ARRAY;
D O I
10.1016/j.rinp.2021.104332
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The real-time and label-free terahertz (THz) metamaterial (MM) sensor is proposed to distinguish the normal concentration of glucose from the abnormal concentration based on the THz time-domain spectroscopy (TDS) technology. The physical mechanism of the biosensing performance is verified theoretically and experimentally. The designed sensor is composed of a couple of asymmetric thick metals on a silicon dioxide substrate and exhibits two transmission dips at 0.26 THz and 0.4 THz in the region from 0.1 THz to 0.5 THz, respectively. Four glucose samples with concentrations from 4 mmol/L to 10 mmol/L with the step of 2 mmol/L are loaded on the top side of the sensor, respectively. The measured results show that the two dips have a red-shift as the concentration of glucose increases. The proposed sensor achieves the sensitivity of 1.22 THz/(mol/L) and 0.52 THz/(mol/L) and the limit of measurement reaches 9 mg/dL. The proposed THz MM sensor has potential applications in diagnosing hyperglycemia and the related diseases.
引用
收藏
页数:7
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