Instability modes of fluid interfaces under normal AC electric fields

在前期理论工作的基础上，提出了研究垂直电场作用下流体界面的失稳模式。术语“流体界面”是指两种不混溶流体（电解质和介电流体）之间的界面。介电流体可以是气体或液体。该项目的主要重点将是空间均匀的交流电场。流体界面的不稳定模式将在其空间结构和振荡频率方面进行研究。将确定触发不稳定性所需的阈值场强。在清洁流体界面的初步研究之后，研究将扩展到覆盖有表面活性剂或颗粒的界面。具体而言，它是预期的表面活性剂或颗粒覆盖的流体界面表现出定性和定量的清洁界面不同的不稳定模式。此外，计划在特定方向上扩展现有理论。所提出的工作可能有影响的控制产生的小液滴诱导的电场和通过自组织的液体膜的结构。

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.