气敏材料在工作环境下初始电阻值的大小,是影响其气敏特性的重要因素.叉指电极的应用在降低初始电阻值的同时会影响气敏材料工作区域的温度分布.利用热分析确定了叉指电板结构参数,理论计算了叉指电极间气敏材料电阻值,并与实验比较,验证了计算方法的可靠性,为进一步优化电板结构提供参考.%The initial resistance value of the sensing material at the work environment is an important factor to the sensor' s performance. The application of the interdigital electrodes can reduce the initial resistance value of the gas sensing material nevertheless affect temperature distribution in its work area. The parameters of the interdigital electrodes structure were determined through the use of the thermal analysis. Theoretical calculation of distributed film resistance was carried out,and was compared with experimental data to verify the reliability of the calculation method. It provides a method for further optimization of the electrode structure.
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