Tian Jingwen, Wang Fan, Ding Yafei, Lei Rui, Shi Yuxiang, Tao Xinglin, Li Shuyao, Yang Ya, Chen Xiangyu
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China.
School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
Research (Wash D C). 2021 Mar 1;2021:8564780. doi: 10.34133/2021/8564780. eCollection 2021.
Highly sensitive ethanol sensors have been widely utilized in environmental protection, industrial monitoring, and drink-driving tests. In this work, a fully self-powered ethanol detector operating at room temperature has been developed based on a triboelectric nanogenerator (TENG). The gas-sensitive oxide semiconductor is selected as the sensory component for the ethanol detection, while the resistance change of the oxide semiconductor can well match the "linear" region of the load characteristic curve of TENG. Hence, the output signal of TENG can directly reveal the concentration change of ethanol gas. An accelerator gearbox is applied to support the operation of the TENG, and the concentration change of ethanol gas can be visualized on the Liquid Crystal Display. This fully self-powered ethanol detector has excellent durability, low fabrication cost, and high selectivity of 5 ppm. Therefore, the ethanol detector based on TENG not only provides a different approach for the gas detection but also further demonstrates the application potential of TENG for various sensory devices.
高灵敏度乙醇传感器已广泛应用于环境保护、工业监测和酒驾测试。在这项工作中，基于摩擦纳米发电机（TENG）开发了一种在室温下运行的完全自供电乙醇探测器。选择气敏氧化物半导体作为乙醇检测的传感元件，而氧化物半导体的电阻变化能够很好地匹配TENG负载特性曲线的“线性”区域。因此，TENG的输出信号可以直接反映乙醇气体浓度的变化。应用一个加速齿轮箱来支持TENG的运行，乙醇气体浓度的变化可以在液晶显示屏上可视化。这种完全自供电的乙醇探测器具有出色的耐用性、低制造成本和5 ppm的高选择性。因此，基于TENG的乙醇探测器不仅为气体检测提供了一种不同的方法，还进一步展示了TENG在各种传感设备中的应用潜力。
