Gas sensors are an indispensable ingredient of the modern society, finding their use across a range of industries that include manufacturing, environmental protection and control, automotive and others. Novel applications have been arising, requiring new materials. Here we outline the principles of gas sensing with a focus on chemiresistive-type devices. We follow up with a summary of the advantages and use of graphene as a gas sensing material, discussing the properties of different graphene production methods. Finally, we showcase some recent results that point to novel applications of graphene-based gas sensors, including respiration monitoring and finger proximity detection.

气体传感器是现代社会不可或缺的组成部分，发现 它们在一系列行业中的使用，包括制造业、 环境保护与控制、汽车等。新的应用 已经出现，需要新的材料。在这里，我们概述了以下原则 气体传感，重点放在化学电阻类型的器件上。我们会跟进一项 概述了石墨烯作为气敏材料的优点和用途， 讨论了不同石墨烯生产方法的特点。最后，我们 展示一些最新的结果，指出石墨烯的新应用 气体传感器，包括呼吸监测和手指接近检测。