Category: Liquid-Gas Interface
Traditionally Nonwetting Surface Made to Wet Mercury
We present a surface-engineering approach that turns all liquids highly wetting, including ultra-high surface tension fluids such as mercury. Previously, highly wetting behavior was only possible for intrinsically wetting liquid/material combinations. Here, we show that roughness made of reentrant structures allows for a metastable hemiwicking state even for nonwetting liquids as predicted by our surface (…)
Transport-Based Modeling of Nucleation on Electrodes
Bubble nucleation is ubiquitous in gas evolving reactions which are instrumental for a variety of electrochemical systems. Fundamental understanding of the nucleation process, which is critical to system optimization, remains limited as prior works generally focused on the thermodynamics and have not considered the coupling between surface geometries and different forms of transport in the (…)
Coexistence of Contact Line Pinning and Depinning
Textured surfaces are instrumental in water repellency or fluid wicking applications, where the pinning and depinning of the liquid–gas interface plays an important role. We demonstrate that a contact line can exhibit nonuniform behavior even without varying the local energy barrier. Around a cylindrical pillar, an interface can reside in an intermediate state where segments (…)