College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518000, Guangdong, China.
College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518000, Guangdong, China.
Soft Matter. 2020 Sep 30;16(37):8526-8546. doi: 10.1039/d0sm01357a.
Electrohydrodynamics is among the most promising techniques for manipulating liquids in microsystems. The electric stress actuates, generates, and coalesces droplets of small sizes; it also accelerates, focuses, and controls the motion of fine jets. In this review, the current understanding of dynamic regimes of electrically driven drops and jets in multiphase microsystems is summarized. The experimental description and underlying mechanism of force interplay and instabilities are discussed. Conditions for controlled transitions among different regimes are also provided. Emerging new phenomena either due to special interfacial properties or geometric confinement are emphasized, and simple scaling arguments proposed in the literature are introduced. The review provides useful perspectives for investigations involving electrically driven droplets and jets.
电动力学是在微系统中操控液体最有前途的技术之一。电场可以驱动、产生和聚合并小体积的液滴，还可以加速、聚焦和控制微射流的运动。在这篇综述中，总结了多相微系统中电驱动液滴和射流的动力学状态的现有理解。讨论了力相互作用和不稳定性的实验描述和基础机制。还提供了控制不同状态之间转变的条件。强调了由于特殊的界面特性或几何约束而出现的新现象，并介绍了文献中提出的简单比例论点。该综述为涉及电驱动液滴和射流的研究提供了有用的视角。
