Irreversible Charging Caused by Energy Dissipation from Depinning of Droplets on Polymer Surfaces

作者：Shuaijia Chen, Ronald T. Leon, Rahmat Qambari, Yan Yan, Menghan Chen, Peter C. Sherrell, Amanda Ellis, Joseph D. Berry · 发表于：Physical Review Letters · 年份：2025 · DOI：10.1103/physrevlett.134.104002 · 被引用次数：5 · 研究领域：Surface Modification and Superhydrophobicity、Fluid Dynamics and Heat Transfer、Electrohydrodynamics and Fluid Dynamics

Interfacial energy dissipation during stick-slip motion of a liquid drop on a nonconductive polymer substrate is shown to lead to an irreversible increase in electrical charge. This previously unobserved phenomenon occurs during surface wetting, in contrast to the previously reported charge separation mechanism that occurs during dewetting. Understanding this electrification mechanism will facilitate the design of energy harvesters and aid the development of risk mitigation strategies for electrostatic buildup in liquid flow across a wide range of industrial applications.