Structural and Compositional Controls of Gas Sensors

利用表面活性剂自组装作为介孔模板和/或聚甲基丙烯酸甲酯微球作为大孔模板，通过各种技术（丝网印刷、溶胶-凝胶浸渍涂敷和射频磁控溅射）已经开发了不同类型的气体传感器（荧光型、固体电解质型、光致发光型和吸附/燃烧型）。通过对气敏材料的微观结构和/或成分的优化来严格控制其气体反应性和扩散性，有效地提高了其气敏性和响应恢复速度。

Different types of gas sensors (semiconductor-type, solid-electrolyte-type, photoluminescence-type and adsorption/combustion-type) have been developed by various techniques (screen-printing, dip-coating with modified a sol-gel technique and radio-frequency magnetron sputtering) employing a self-assembly of surfactants as a mesopore template and/or polymethylmethacrylate microspheres as a macropore template. The strict control of the gas-reactivity and -diffusivity of gas sensing materials by their microstructural and/or compositional optimization effectively improved their gas sensitivity and response and recovery speeds.