A fast-response and highly linear humidity sensor based on quartz crystal microbalance

被引：42
作者：
Zheng, Xinyu [1 ]
Fan, Rongrong [1 ]
Li, Chunru [1 ]
Yang, Xingyue [1 ]
Li, Huizi [1 ]
Lin, Jiandi [1 ]
Zhou, Xuechou [1 ]
Lv, Rixin [1 ]
机构：
[1] Fujian Agr & Forestry Univ, Sch Life Sci, Fuzhou 350002, Fujian, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2019年 / 283卷
基金：
中国博士后科学基金;
关键词：
Fast-response; Highly linear; Quartz crystal microbalance; Humidity sensor; Polyvinyl alcohol; Nano-silica; SURFACE-ACOUSTIC-WAVE; SENSING PROPERTIES; RELATIVE-HUMIDITY; OXIDE; FORMALDEHYDE;
D O I：
10.1016/j.snb.2018.12.081
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A fast-response and highly linear humidity sensor based on quartz crystal microbalance (QCM) was prepared by using polyvinyl alcohol (PVA) and nano-silica composites as sensing film. The mass ratio of PVA to nano-silica and the total mass of sensing film which can significantly influence the response time and linearity of humidity sensor were well discussed. The results show that the optimal mass ratio of PVA to nano-silica is 1:1.5 and the total mass of the sensing film coated on the surface of QCM is 1.0 mu g. Under the optimum conditions, the frequency shifts linearly respond to the relative humidity. The prepared humidity sensor has short response time (5 s), short recovery time (21 s), good stability and reproducibility. The developed humidity sensor is expected to be used for the detection of humidity in practice.
引用
收藏
页码：659 / 665
页数：7
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