Microfluidic systems for biochemical reactions require efficient microfluidic actuation. However, current microfluidic devices are facing challenges in terms of self-powering and precise transport of microfluidics. This study demonstrates a novel approach to fabricating a self-powered and precise microfluidic manipulation system based on triboelectric nanogenerator (TENG) and electrowetting-on-dielectric (EWOD) technologies. The TENG provides high pulsed voltage and electrical wetting capabilities, enabling the manipulation system to drive microfluidic transport through electric field forces. The self-powered microfluidic device is systematically investigated by the effect of various parameters, including TENG power, TENG structures, EWOD/microfluidic device structures and surface hydrophobic properties. By optimizing the parameters, optimal performances are achieved in microfluidic motion, particularly in terms of precise two-dimensional movement. The movable volume range spans from 20 nl to 1.4 ml, representing one of the most notable achievements of TENG in the field so far. Additionally, the self-powered microfluidic system successfully synthesized multiple morphological ZnO nanoparticles, a rarely reported accomplishment. Finally, the novel self-powered system demonstrates the capability to detect chloride in disinfected water and COVID-19 antigen detection. This work proposes a novel TENG-EWOD microfluidic control technology that shows promise in various applications, including chemical processes, biological health testing and microdevice fabrication.

中文翻译：

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基于摩擦纳米发电机的自供电二维微流控生化反应系统


用于生化反应的微流体系统需要有效的微流体驱动。然而，当前的微流控装置在微流控的自供电和精确传输方面面临着挑战。这项研究展示了一种基于摩擦纳米发电机（TENG）和电介质电润湿（EWOD）技术制造自供电且精确的微流体操纵系统的新方法。 TENG 提供高脉冲电压和电润湿能力，使操纵系统能够通过电场力驱动微流体传输。通过各种参数的影响，包括TENG功率、TENG结构、EWOD/微流控装置结构和表面疏水特性，系统地研究了自供电微流控装置。通过优化参数，微流体运动实现了最佳性能，特别是在精确的二维运动方面。可移动体积范围从20 nl到1.4 ml，代表了TENG迄今为止在该领域最引人注目的成就之一。此外，自供电微流控系统成功合成了多种形态的氧化锌纳米粒子，这是一项罕见的成就。最后，新型自供电系统展示了检测消毒水中氯化物和检测 COVID-19 抗原的能力。这项工作提出了一种新颖的 TENG-EWOD 微流体控制技术，该技术在化学过程、生物健康测试和微器件制造等各种应用中显示出前景。