Wang Xinjie, Lv Zhen, Shao Yuming, Shi Yujie, Yao Yao, Wang Jiong
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Micromachines (Basel). 2024 Nov 27;15(12):1424. doi: 10.3390/mi15121424.
The ion drag pump, as one kind of electrohydrodynamic pump, has received considerable attention in fluid applications due to its excellent pumping flow rate and pressure. However, there is a lack of systematic research about the factors that influence pumping performance of the ion drag pump. Here, a photo-induced ion drag pump based on the PLZT ceramic is proposed by combining the photoelectric effect and field emission phenomenon. The EHD model of this ion drag pump is constructed based on the mathematical model of the photovoltage of the PLZT ceramic, through which a series of finite element simulations are carried out to comprehensively investigate the factors that influence the pumping performance. The results demonstrate that such an ion drag pump is able to be improved by optimizing the electrode structure and fluid channel; increasing the light intensity; and providing a basic design guideline for applications of ion drag pumps in microfluidics, soft robots, and heat dissipation in micro devices.
离子拖动泵作为一种电流体动力学泵，因其出色的泵送流量和压力，在流体应用中受到了广泛关注。然而，目前对于影响离子拖动泵泵送性能的因素缺乏系统研究。在此，通过结合光电效应和场发射现象，提出了一种基于PLZT陶瓷的光致离子拖动泵。基于PLZT陶瓷光电压的数学模型构建了该离子拖动泵的电流体动力学模型，并通过该模型进行了一系列有限元模拟，以全面研究影响泵送性能的因素。结果表明，通过优化电极结构和流体通道、增加光强度，可以改进这种离子拖动泵，为离子拖动泵在微流体、软体机器人和微器件散热方面的应用提供了基本设计准则。
