基于CS-PVP K30复合物薄膜基的QCM湿度传感器  

QCM Humidity Sensor Based on CS-PVP K30 Composite Film

作　　者：王艳[1] 陶金 罗健 陈思毅 彭宏 王云霄 尹泽宇 WANG Yan;TAO Jin;LUO Jian;CHEN Siyi;PENG Hong;WANG Yunxiao;YIN Zeyu(School of Electrical Information,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学电气信息学院,四川成都610500

出　　处：《压电与声光》2025年第1期190-195,共6页Piezoelectrics & Acoustooptics

摘　　要：石英晶体微天平(QCM)作为纳克级精度传感器,通过在敏感区添加湿敏材料,能够在气相条件下高精度检测湿度,具有检测范围广、成本低和制作简单的优点。为提升湿敏材料的性能,扩展基于QCM的湿度传感器的应用,构建了基于壳聚糖(CS)基底,聚乙烯吡咯烷酮(PVP)成膜机理的复合物薄膜基的QCM湿度传感器。实验证明该传感器响应、恢复时间分别为13 s、14 s,在相对湿度11%~97%检测范围内的灵敏度达到57.84 Hz/%RH,在30天稳定性重复实验中最大频率波动小于10 Hz。Quartz crystal microbalance(QCM),a nanogram-level sensor,offers the advantages of high detection accuracy,wide humidity detection range,low cost,and simple fabrication method via the addition of humidity-sensitive materials in sensitive areas to detect humidity under gas phase conditions.To enhance the performance of hygroscopic materials and expand the applications of QCM-based humidity sensors,a QCM humidity sensor based on a chitosan(CS)substrate and polyvinylpyrrolidone(PVP)film-forming mechanism was constructed.The experimental results show that the response/recovery time of the sensor is 13 s/14 s,the sensitivity reaches 57.84 Hz/%RH in the detection range of 11%RH-97%RH,and the maximum frequency fluctuation is less than 10 Hz within 30 days in repeated experiments.

关 键 词：湿度传感器 石英晶体微天平(QCM) 壳聚糖(CS) 聚乙烯吡咯烷酮(PVP) 灵敏度 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TN384[自动化与计算机技术—控制科学与工程]