Humidity detection by nanostructured ZnO: A wireless quartz crystal microbalance investigation

被引：62

作者：

Zhou, Xiaofeng ^{[1
]}

Zhang, Jian ^{[1
]}

Jiang, Tao ^{[1
]}

Wang, Xiaohua ^{[1
]}

Zhu, Ziqiang ^{[1
]}

机构：

[1] E China Normal Univ, Dept Elect Engn, State Key Lab Transducer Technol, Shanghai 200062, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2007年 / 135卷 / 01期

关键词：

wireless sensor; nanostructured ZnO; quartz crystal microbalance; humidity sensor; relative humidity; THIN-FILMS; GAS SENSOR; TEMPERATURE;

D O I：

10.1016/j.sna.2006.07.001

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：

In this paper, we present a wireless relative humidity sensor system prototype which based on quartz crystal microbalance (QCM) coated with nanostructured ZnO as sensing element. The wireless QCM sensor system is composed of two parts: the probe based on QCM sensor and the RF receiver. The probe has two functions: to sense and display the frequency signals and to transmit the signals to the receiver. The receiver connected to the personal computer can receive and record the sensor signals. Experimental results indicate that the wireless RH sensor has quite good stability and reproducibility. The interaction distance between the probe and the receiver can be varied from 5 to 300 m. The proposed system is potential to construct the low-cost, real-time online wireless gas sensor system, which can be used to monitor the pollutants in the family and the harsh environment. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：209 / 214

页数：6