Carbon nanotube-based electromagnetic band gap resonator for CH4 gas detection

被引：19
作者：
Cismaru, Alina [1 ]
Aldrigo, Martino [1 ]
Radoi, Antonio [1 ]
Dragoman, Mircea [1 ]
机构：
[1] Natl Inst Res & Dev Microtechnol IMT, POB 38-160, Bucharest 023573, Romania
来源：
JOURNAL OF APPLIED PHYSICS | 2016年 / 119卷 / 12期
关键词：
METHANE; SENSOR; GOLD;
D O I：
10.1063/1.4944708
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, we present the experimental results obtained in the microwave frequency range using an electromagnetic band gap (EMBG) resonator covered with carbon nanotubes (CNTs) and dedicated to CH4 gas detection. The multi-walled CNTs layer is decorated with gold nanoislands (with sizes between 2 nm and 20 nm) and deposited over the EMBG resonator. The microwave measurements of the CNT-based EMBG resonator in air (no gas) and kept for 60 min inside the chamber filled with CH4 demonstrate a shift in the resonance frequency of about 139 MHz and a phase shift of about 9.63 degrees. A very good sensitivity of about 4.58% was obtained from scattering parameters measurements. A new device for CH4 detection was then fabricated and tested. (C) 2016 AIP Publishing LLC.
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页数：6
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