Study on split-ring-resonator based terahertz sensor and its application to the identification of product oil

被引：21

作者：

Hu, Fangrong ^{[1
,4
,5
]}

Zhang, Longhui ^{[1
,4
]}

Xu, Xinlong ^{[2
,3
]}

Wang, Yue'e ^{[1
,4
,5
]}

Zou, Taobo ^{[1
,4
]}

Zhang, Wentao ^{[1
,4
]}

机构：

[1] Guilin Univ Elect Technol, Guangxi Coll & Univ Key Lab Optoelect Informat Pr, Guilin 541004, Peoples R China

[2] NW Univ Xian, Nanobiophoton Ctr, State Key Lab Incubat Base Photoelect Technol & F, Xian 710069, Peoples R China

[3] NW Univ Xian, Inst Photon & Photon Technol, Xian 710069, Peoples R China

[4] Guangxi Key Lab Automat Detect Technol & Instrume, Guilin 541004, Peoples R China

[5] Guangxi Expt Ctr Informat Sci, Guilin 541004, Peoples R China

来源：

OPTICAL AND QUANTUM ELECTRONICS | 2015年 / 47卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Terahertz (THz) sensor; Split-ring-resonator (SRR); Equivalent circuit; Permittivity; Product oil identification; MAGNETIC RESPONSE; METAMATERIALS; WEAPONS;

D O I：

10.1007/s11082-015-0175-5

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Based on the finite-integration-technology method, we calculate the high and low frequency resonant peaks of the split-ring-resonators (SRRs) which served as a terahertz sensor. An equivalent three-SRRs model is introduced to understand the SRR structure at the high frequency resonant absorption peak. At the same time, an equivalent circuit is set up to calculate the high frequency resonant peak. After that, we theoretically study the sensitivity of these two peaks. The results suggest that both of these two resonant peaks show redshift when the permittivity of surrounding medium increase, and the high frequency peak is more sensitive to this permittivity variation than the low one. The SRR sample is fabricated using a surface micromachining process and used to identify gasoline of 93# and 97#. The experiment results show that the redshift of the high frequency resonant peak is larger than that of the low one, and it is in good agreement with theory analysis. This study suggests that the SRR is a good sensor to identify the product oil, and its high frequency resonant peak is more sensitive to the variation of the permittivity than the low one.

引用

页码：2867 / 2879

页数：13

共 31 条

[1]

Al-Douseri FM, 2006, INT J INFRARED MILLI, V27, P481, DOI [10.1007/s10762-006-9102-y, 10.1007/s10762-006-9102-v]

[2] Non-invasive detection of weapons of mass destruction using THz radiation [J].