Investigations on the Sensing Mechanism of Humidity Sensors Based on Poly(4-vinylpyridine)/carbon Black Composite by AC Impedance Spectra  

作　　者：Hong Li-jie, Li Yang, Yang Mu-jie(Department of Polymer Science and Engineering, Zhejiang University,Hangzhou 310027, China) 

出　　处：《复旦学报（自然科学版）》2007年第5期796-,共1页Journal of Fudan University：Natural Science

摘　　要：1 Results Investigations on the sensing mechanism is important for understanding the electrical responses of humidity sensors to humidity change,and could provide guidelines for the design and synthesis of humidity sensitive materials with desirable properties.In this work,the sensing mechanism of humidity sensors based on quaternized poly(4-vinylpyridine) (PVP)/carbon black (CB) composite[1] was studied by measuring their AC impedance spectra at various humidities at room temperature.Under low humidity...

关 键 词：sensing mechanism poly(4-vinylpyridine) carbon black AC impedance spectra 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]