Effect of Different Inorganics on Polyimide-Based Bragg Grating Humidity Sensor

被引：20

作者：

Sun, Tengpeng ^{[1
]}

Wang, Weijia ^{[1
]}

Peng, Jiankun ^{[1
]}

Qu, Yapeng ^{[1
]}

Dai, Jixiang ^{[1
]}

Yang, Minghong ^{[1
]}

机构：

[1] Wuhan Univ Technol, Natl Engn Lab Fiber Opt Sensing Technol, Wuhan 430070, Hubei, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2019年 / 19卷 / 06期

关键词：

Humidity sensor; fiber Bragg gating; polyimide; activated carbon; lithium chloride; RELATIVE-HUMIDITY; FIBER;

D O I：

10.1109/JSEN.2018.2885126

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：

Effect of activated carbon and lithium chloride on polyimide-based fiber Bragg grating relative humidity sensor has been experimentally investigated. Through dip coating process, organic-inorganic hybrid coatings were deposited on fiber Bragg grating to form different relative humidity sensors. Experimental results show that the addition of activated carbon or lithium chloride alone could increase the humidity sensitivity (1.67 times and 1.61 times, respectively), but the structure which contains both lithium chloride and activated carbon increases the sensitivity most (3.9 times). In the 14-day stability test, the fluctuation of pure polyimide sensor is +/- 6.5%, while the ones of activated carbon sensor, lithium chloride sensor, activated carbon, and lithium chloride sensor are +/- 3%, +/- 8%, and +/- 1.6%.

引用

页码：2016 / 2022

页数：7

共 27 条

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