2016年5月14日星期六

Humidity sensors based on composite material of nano-BaTiO3 and polymer RMX

The composite material made of nanocrystal BaTiO3 and polymer material quaternary acrylic resin (RMX) can be used to make humidity sensors. The infrared (IR) and X-ray photoelectron spectroscope (XPS) spectra of the material were analyzed and compared with those of nanocrystal BaTiO3. An equivalent circuit was given by analyzing the complex impedance plots of the composite material sensor. The electrical properties of the sensor were investigated, including resistance versus relative humidity, humidity hysteresis, response–recover time and long-term stability. The results indicated that the humidity sensing properties of the composite material is better than those of nanocrystal BaTiO3.

Jing Wang is a professor in the Department of Electronic Engineering, Dalian University of Technology, China. She received her MSc degree from the Department of Electronic Engineering, Jilin University, China in 1981 and then worked there till 1998. Her current scientific interests are gas and humidity sensing materials and sensors.

Qiuhua Lin received her Master’s degree from the Department of Electronic Engineering, Dalian University of Technology, China in 1994, and worked there as a lecturer till now. Her current research interests include intelligent instrumentation and array signal processing.

Riqiang Zhou graduated from Xi’an Institute of Military Telecommunication Engineering in 1965. He is an associate professor in the Department of Electronic Engineering, Dalian University of Technology, China. His main field of current scientific interest is electronic circuits.

Baokun Xu is a professor in the Department of Electronic Engineering, Jilin University, China. He graduated from the Jilin University, China in 1965. His current research interests include preparation and investigation of nanometer oxide materials, their applications to sensors, and microwave and photoelectron devices.

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