Title :
The study of the gas microsensors based on polymer-carbon black composites
Author :
Xie, Haifen ; Wu, Jiangsheng ; Huang, Peng ; Xinming Ji ; Hunag, Yiping
Author_Institution :
Dept. of Phys., East China Univ. of Sci. & Technol., Shanghai
Abstract :
In this paper, we study a novel chemical gas sensor arrays based on polymer-carbon black composite. The two different polymers which are poly (4-vinyl phenol), poly (ethylene oxide) are employed as the sensor materials which are immobilized on the array of the interdigitated microelectrode pair. The resistance change of sensors of two different organic gases (toluene, methanol) at different concentration has been examined (300ppm, 600ppm, 900ppm, 1200ppm, 1500ppm). At low concentration, Langmuir absorption model is used to explain the reason of the resistance changes. The relationship between the resistance changes and gas concentration in the range from 300ppm to 1500ppm can be approximated to a straight line; the chemical absorption is also existed in the absorption
Keywords :
carbon; composite materials; gas sensors; microsensors; polymers; Langmuir absorption model; chemical absorption; gas concentration; gas microsensors; interdigitated microelectrode pair; poly (4-vinyl phenol); poly (ethylene oxide); polymer-carbon black composites; resistance changes; sensor materials; Absorption; Chemical sensors; Chemical technology; Ethanol; Gas detectors; Gases; Microsensors; Polymer films; Sensor arrays; Testing;
Conference_Titel :
Solid-State and Integrated Circuit Technology, 2006. ICSICT '06. 8th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0160-7
Electronic_ISBN :
1-4244-0161-5
DOI :
10.1109/ICSICT.2006.306399