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Liquid Plug Motion Noninvasive Detecting in Opaque Microchannels via Grating Electrodes-Based Liquid-Solid Nanogenerator
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2024-03-12 , DOI: 10.1002/admt.202301926 Nannan Zhao 1 , Hengxu Du 1 , Meng Zou 1 , Ziyue Xi 2 , Hengyi Yang 2 , Bowen Dong 1 , Yawei Wang 2 , Hongyong Yu 2 , Ruijiang Xu 2 , Fangyang Dong 2 , Huiwen Wang 2 , Minyi Xu 2
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2024-03-12 , DOI: 10.1002/admt.202301926 Nannan Zhao 1 , Hengxu Du 1 , Meng Zou 1 , Ziyue Xi 2 , Hengyi Yang 2 , Bowen Dong 1 , Yawei Wang 2 , Hongyong Yu 2 , Ruijiang Xu 2 , Fangyang Dong 2 , Huiwen Wang 2 , Minyi Xu 2
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The precision in controlling fluid flow is crucial for the efficiency of microchannel devices. Consequently, it is essential to monitor the fluid within microchannels in real time. However, the microchannel flow's susceptibility to disturbance and small size present challenges in sensing. A Liquid-Solid Triboelectric Nanogenerator (TENG) with grating electrodes is proposed for non-invasive sensing of liquid plug movements in microchannels and is suitable for use with opaque channels. This sensor operates on the principle of initiating multiple pulse signals via grating electrodes. And analyze the motion of the liquid plug by the time difference between the signal peaks. It facilitates the measurement of liquid plug count, average speed, average acceleration, and the detection of flow direction. The liquid plug counters, and flow direction sensors yielded clear and distinguishable signals. The liquid plug average speed sensor achieves a 95% accuracy rate, and the acceleration sensor accurately distinguishes speed trends of the liquid plug with more than 85% precision. Grating electrodes are effectively employed for motion sensing. Analyzing the motion of an object by the time difference between voltage peaks offers greater stability than voltage magnitude analysis. Four portable prototypes are designed to make them applicable for fluid sensing in microchannel devices.
中文翻译：
通过基于光栅电极的液固纳米发电机在不透明微通道中进行液塞运动无创检测
控制流体流动的精度对于微通道装置的效率至关重要。因此，实时监测微通道内的流体至关重要。然而，微通道流对干扰的敏感性和小尺寸给传感带来了挑战。提出了一种带有光栅电极的液-固摩擦纳米发电机（TENG），用于非侵入式传感微通道中的液体塞运动，并且适用于不透明通道。该传感器的工作原理是通过光栅电极发出多个脉冲信号。并通过信号峰值之间的时间差来分析液塞的运动。方便测量液塞数、平均速度、平均加速度以及流向检测。液塞计数器和流向传感器产生清晰可辨的信号。液塞平均速度传感器准确率达到95%，加速度传感器准确判别液塞速度趋势，精度达到85%以上。光栅电极有效地用于运动感测。通过电压峰值之间的时间差来分析物体的运动比电压幅值分析具有更高的稳定性。设计了四个便携式原型，使其适用于微通道设备中的流体传感。
更新日期：2024-03-12
中文翻译：
通过基于光栅电极的液固纳米发电机在不透明微通道中进行液塞运动无创检测
控制流体流动的精度对于微通道装置的效率至关重要。因此，实时监测微通道内的流体至关重要。然而，微通道流对干扰的敏感性和小尺寸给传感带来了挑战。提出了一种带有光栅电极的液-固摩擦纳米发电机（TENG），用于非侵入式传感微通道中的液体塞运动，并且适用于不透明通道。该传感器的工作原理是通过光栅电极发出多个脉冲信号。并通过信号峰值之间的时间差来分析液塞的运动。方便测量液塞数、平均速度、平均加速度以及流向检测。液塞计数器和流向传感器产生清晰可辨的信号。液塞平均速度传感器准确率达到95%，加速度传感器准确判别液塞速度趋势，精度达到85%以上。光栅电极有效地用于运动感测。通过电压峰值之间的时间差来分析物体的运动比电压幅值分析具有更高的稳定性。设计了四个便携式原型，使其适用于微通道设备中的流体传感。
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