Instability modes of fluid interfaces under normal AC electric fields

在前期理论工作的基础上，提出了研究正常电场作用下流体界面失稳模式的设想。术语“流体界面”指的是两种不相容的流体、电解液和介电流体之间的界面。介电流体可以是气体或液体。该项目的主要焦点将是空间均匀的交流电场。流体界面的失稳模式将根据其空间结构和振荡频率进行研究。触发不稳定性所需的阈值场强将被确定。在对清洁的流体界面进行初步研究之后，这些研究将扩展到被表面活性剂或颗粒覆盖的界面。具体地说，预计表面活性剂或颗粒覆盖的流体界面表现出与清洁界面在性质和数量上都不同的不稳定模式。此外，还计划在具体方向上扩展现有的理论。这项工作可能对电场诱导的小液滴的控制产生和通过自组织形成液膜结构具有一定的指导意义。

Based on preliminary theoretical work, it is proposed to study the instability modes of fluid interfaces under application of a normal electric field. The term "fluid Interface" refers to an interface between two immiscible fluids, an electrolyte and a dielectric fluid. The dielectric fluid may either be a gas or a liquid. The main focus of the project will be on spatially homogeneous AC electric fields. The instability modes of the fluid interface will be studied in terms of their spatial structure and oscillation frequency. The threshold field strength needed to trigger the instability will be determined. After initial studies with clean fluid interfaces, the studies will be extended to interfaces covered with surfactants or particles. Specifically, it is expected that surfactant or particle-covered fluid interfaces exhibit instability modes that are qualitatively and quantitatively different from those of clean interfaces. Furthermore, it is planned to extend the existing theory in specific directions. The proposed work may have implications for the controlled generation of small droplets induced by electric fields and for the structuring of liquid films via self-organization.