A novel self-heating hydrogen gas sensor based on zinc oxide nanorods coated on indium tin oxide was fabricated. This sensor utilizes Joule heating effect of indium tin oxide to generate heat, while ZnO acts as a variable resistor to regulate the amount of electric current that passes through indium tin oxide layer upon exposure to oxygen and hydrogen gas. The gas sensor was capable of detecting very low concentration of H₂ in air. Hence, for the first time, a new way of gas detection based on sensor temperature variation as the sensing mode was demonstrated.

中文翻译：

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一种新型的自热氧化锌/铟锡氧化物基氢气传感器：氢气检测的双重传感模式

制备了一种新型的基于铟锡氧化物涂层的氧化锌纳米棒的自热式氢气传感器。该传感器利用铟锡氧化物的焦耳热效应产生热量，而ZnO用作可变电阻器，以调节暴露于氧气和氢气时通过铟锡氧化物层的电流量。气体传感器能够检测空气中非常低的H ₂浓度。因此，首次展示了一种基于传感器温度变化作为传感模式的气体检测新方法。