ZHAO Liang, CHEN Xiang-dong, YANG Ying, et al. Design of new capacitive gas sensor for SO2 with three-dimensional sensitive effect[J]. 2009, 28(7): 68-70.
ZHAO Liang, CHEN Xiang-dong, YANG Ying, et al. Design of new capacitive gas sensor for SO2 with three-dimensional sensitive effect[J]. 2009, 28(7): 68-70. DOI: 10.13873/j.1000-97872009.07.033.
The response mechanism of traditional gas sensor is based on surface effect by one-dimensional diffusion.A new capacitive gas sensor for SO2 is put forward.The structure is made up of cylinder model with three-dimensional diffusion
which upper and side surfaces can meet the gas at the same time to enlarge the area with gas.According to the theory of film diffusion
the response time of gas sensor is analyzed and compared with traditional sensor