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Ultra-sensitive and responsive capacitive humidity sensor based on graphene oxide

机译：基于氧化石墨烯的超灵敏响应式湿度传感器

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摘要

Humidity sensors have attracted extensive attentions due to their various applications in environment monitoring, health care and internet of things. Graphene oxide has recently been exploited as a humidity sensing material because of its good hydrophilicity and excellent sensitivity. Here we report an ultra-sensitive and responsive capacitive humidity sensor using graphene oxide as sensing material. A capacitance change of ten times is observed when the relative humidity changes from 50% to 90%. The response and recovery time of the sensor are measured to be 0.066 and 0.154 s, respectively, which are several orders of magnitude shorter than conventional humidity sensors. Furthermore, its responses to flow rate, temperature and other vapors are also characterized.
机译：湿度传感器由于其在环境监测，医疗保健和物联网中的各种应用而引起了广泛的关注。氧化石墨烯由于其良好的亲水性和优异的灵敏度而最近被用作湿度感测材料。在这里，我们报告了一种使用氧化石墨烯作为传感材料的超灵敏，响应灵敏的电容式湿度传感器。当相对湿度从50％变为90％时，可观察到十倍的电容变化。传感器的响应时间和恢复时间分别为0.066和0.154 s，比常规湿度传感器短几个数量级。此外，其对流量，温度和其他蒸气的响应也得到了表征。

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