Transition time of a bouncing drop
Abstract
Contact time of bouncing drops is one of the most essential parameters to quantify the water-repellency of surfaces. Generally, the contact time on superhydrophobic surfaces is known to be Weber number-independent. Here, we probe an additional characteristic time, \emph{transition time} inherent in water drop impacting on superhydrophobic surfaces, marking a switch from a predominantly lateral to an axial motion. Systematic experiments and numerical simulations show that the transition time is also Weber number-independent and accounts for half the contact time. Additionally we identify a Weber-independent partition of volume at the maximum spreading state between the rim and lamella and show that the latter contains 1/4 of the total volume of the drop.
Cite
@article{arxiv.2410.20821,
title = {Transition time of a bouncing drop},
author = {Yahua Liu and Seyed Ali Hosseini and Cong Liu and Milo Feinberg and Benedikt Dorschner and Zuankai Wang and Ilya Karlin},
journal= {arXiv preprint arXiv:2410.20821},
year = {2024}
}