文献类型：会议论文

英文题名：The study of the gas microsensors based on polymer-carbon black composites

作者：Haifen, Xie[1]; Jiangsheng, Wu[1]; Peng, Huang[1]; Xinming, Ji[2]; Yiping, Hunag[2]

机构：[1] Department of Physics, East China University of Science and Technology, Xuefu Road 1000, Jinshan District, Shanghai 201512, China; [2] ASIC and System State Key Lab., Department of Microelectronics, Fudan University, 220 Handan Road, Shanghai, 200433, China

会议论文集：ICSICT-2006: 2006 8th International Conference on Solid-State and Integrated Circuit Technology, Proceedings

会议日期：October 23, 2006 - October 26, 2006

会议地点：Shanghai, China

语种：英文

外文关键词：Absorption - Carbon black - Chemical sensors - Desorption - Microelectrodes - Microsensors - Polyethylene oxides

摘要：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 interdigitaled 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. ? 2006 IEEE.