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The surface-type and the sandwich-type humidity sensors were fabricated with nanometer barium titanate film. The resistance, capacitance and impedance properties of the sensors were measured and analyzed at different frequency when relative humidity (RH) changes from 11% RH to 98% RH. The two types of humidity sensors have the similar properties. The results indicate the high sensitivity and influence...
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 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
This paper describes an application of quartz tuning forks (QTF) coated with nanocrystalline ZnO films used as relative humidity sensors. The nanocrystalline ZnO thin films were deposited on the QTF by sol-gel method. The film was characterized by X-Ray Diffraction (XRD) and Atomic Force Microscope (AFM) to obtain the information on the structural and morphological properties. And the humidity sensitivity...
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