Metamaterial-Inspired Multichannel Thin-Film Sensor

被引：90

作者：

Withayachumnankul, Withawat ^{[1
,2
]}

Jaruwongrungsee, Kata ^{[2
,3
]}

Fumeaux, Christophe ^{[4
]}

Abbott, Derek ^{[4
]}

机构：

[1] Univ Adelaide, Sch Elect & Elect Engn, Adelaide, SA 5005, Australia

[2] King Mongkuts Inst Technol Ladkrabang, Fac Engn, Sch Elect Engn, Bangkok 10520, Thailand

[3] Natl Elect & Comp Technol Ctr, Nanoelect & MEMS Lab, Pathum Thani 12120, Thailand

[4] Univ Adelaide, Sch Elect & Elect Engn, Adelaide, SA 5005, Australia

来源：

IEEE SENSORS JOURNAL | 2012年 / 12卷 / 05期

基金：

澳大利亚研究理事会;

关键词：

Metamaterial; multichannel sensors; split-ring resonator;

D O I：

10.1109/JSEN.2011.2173762

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：

A multichannel thin-film sensor is implemented from a set of microstrip-coupled split-ring resonators (SRRs) with different dimensions. Each SRR exhibits a unique high-Q resonance that is sensitive to the presence of a sample in a particular area. Hence, this SRR-based sensor can function (i) to detect different samples simultaneously to increase the throughput or (ii) to characterise nominally identical samples at multiple frequencies to increase the sensor selectivity. In addition, the sensitivity of this SRR-based sensor is optimized through strategic design of the resonator shape to produce a strong confined electric field at each sensing region. The design principle is validated with simulation and measurement. Owing to the optimized design, sensing a low-permittivity film with a thickness as small as one thousandth of the operating wavelength is achievable.

引用

页码：1455 / 1458

页数：4

共 14 条

[1] Thin-film sensing with planar asymmetric metamaterial resonators [J].