基于一维纳米材料的双层微波湿度传感研究  

Double-Layer Microwave Humidity Sensing Based on One-Dimensional Nanomaterials

作　　者：江世鹏 梁峻阁 王晓 吴佳糠 顾晓峰 JIANG Shipeng;LIANG Junge;WANG Xiao;WU Jiakang;GU Xiaofeng(Engineering Research Center of Internet of Things Technology Application,Ministry of Education,Jiangnan University,Wuxi Jiangsu 214122,China)

机构地区：[1]江南大学物联网技术应用教育部工程研究中心,江苏无锡214122

出　　处：《传感技术学报》2021年第11期1433-1439,共7页Chinese Journal of Sensors and Actuators

基　　金：中国博士后科学基金(2020M671439,2020T130283);中国国家自然科学基金(61903160);江苏省自然科学基金(BK20190581)。

摘　　要：微波湿度检测方案在传感技术的推进下逐渐形成并得到全面发展,现阶段的研究主要从微波器件的结构设计展开,而忽视了对应的湿敏材料制备及优化。一维纳米材料因其高比表面积和孔隙率,是有助于提高检测灵敏度的优选敏感材料。本文设计了一款基于新型分裂环谐振器的双层微波传感器,利用高压静电纺丝技术制备了聚丙烯腈一维纳米材料,将该湿敏材料置于器件强电场聚集区域,在10%RH~90%RH湿度范围内实现了0.05 dB/%RH(基于插入损耗)、0.15°/%RH(基于相位)的检测灵敏度、1.63%RH(基于插入损耗)、3.56%RH(基于相位)的湿滞,在稳定性检测中实现了最大误差0.21%RH。结果表明除微波检测电极设计,湿敏材料的制备工艺也显著影响了微波湿度传感器的检测特性。With the promotion of sensing technology,microwave humidity detection has been gradually formed and developed in an all-around way.At present,the research mainly focuses on the structure design of microwave devices while neglecting the corresponding improvement of the preparation of humidity-sensitive materials.For its high specific surface area and porosity,one-dimensional nanomaterials are preferred sensitive materials to improve the detection sensitivity.In this paper,a double-layer microwave sensor based on a novel split-ring resonator was designed.Accordingly,the one-dimensional polyacrylonitrile nanomaterial was prepared by high voltage electrospinning technology.The most robust electric field section was set as the sensitive region.The sensitivity of 0.05 dB/%RH(based on insertion loss),0.15°/%RH(based on phase),humidity hysteresis of 1.63%RH(based on insertion loss),3.56%RH(based on phase),and stability with the maximum error is 0.21%RH are achieved in the humidity range of 10%RH~90%RH.The results show that,besides optimizing the device structure,the preparation technology of the sensitive material also highly affects the detection characteristics of the microwave humidity sensor.

关 键 词：微波传感器 纳米材料 静电纺丝技术 湿度传感器 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]