Achieve equilibrium outside the contact angle hysteresis
Soft Condensed Matter
2025-02-07 v1
Abstract
It is common belief that the equilibrium contact angle, corresponding to the minimum system energy state, lies between advancing and receding contact angles. Here, we derive advancing and receding contact angles considering the micro contacting processes on ideal rough 2D surfaces. Equilibrium contact angles obtained via energy minimization can be smaller than the receding contact angle and reach 0 degrees, at which hysteresis diminishes on the super-hydrophilic surface. Gibbs free energy analyses, numerical simulations and physical experiments all confirm these new findings.
Cite
@article{arxiv.2502.03476,
title = {Achieve equilibrium outside the contact angle hysteresis},
author = {Lei Liu and Guanlong Guo and Kaiyu Wang and Linke Chen and Yangyang Fan and Sergio Andres Galindo Torres and Jiu-an Lv and Herbert E. Huppert and Changfu Wei and Liang Lei},
journal= {arXiv preprint arXiv:2502.03476},
year = {2025}
}