Tag: Wetting
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 (…)
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 (…)