標題: Sensitivity Enhancement of Acetone Gas Sensor using Polyethylene Glycol/Multi-Walled Carbon Nanotubes Composite Sensing Film with Thermal Treatment
作者: Chiou, Jin-Chern
Wu, Chin-Cheng
Lin, Tse-Mei
電子工程學系及電子研究所
電控工程研究所
Department of Electronics Engineering and Institute of Electronics
Institute of Electrical and Control Engineering
關鍵字: acetone;polyethylene glycol;Multi-walled Carbon Nanotubes;thermostat;thermal distribution;temperature effect
公開日期: 5-Mar-2019
摘要: There is a need to develop a chemiresistive gas sensor equipped with a thermostat over a wide area for the sensor, which can protect the sensor from the influence of ambient temperature due to the uniform temperature of the thermostat. In this paper, we demonstrated an acetone gas sensor based on a polyethylene glycol (PEG)/Multi-walled Carbon Nanotubes (MWCNTs) composite film, which was equipped with a thermostat. The sensor was operated at modest working temperatures for sensor sensitivity enhancement. The optimum design of the polyimide-based thermostat with widely uniform thermal distribution was investigated in detail. It was found that the temperature uniformity of the thermostat was achieved using double spiral geometry. The experimental results of the sensor response showed that the PEG/MWCNTs composite film with a moderate working temperature revealed a higher sensitivity than that without thermal treatment. Moreover, the sensing mechanisms of the PEG/MWCNTs composite gas sensor to acetone vapor were studied as well.
URI: http://dx.doi.org/10.3390/polym11030423
http://hdl.handle.net/11536/151593
DOI: 10.3390/polym11030423
期刊: POLYMERS
Volume: 11
Issue: 3
起始頁: 0
結束頁: 0
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