Apparent Contact Angle of Droplets on Liquid Infused Surfaces: Geometric Interpretation
Soft Condensed Matter
2021-05-12 v1 Fluid Dynamics
Abstract
We theoretically investigate the apparent contact angle of droplets on liquid infused surfaces as a function of the relative size of the wetting ridge and the deposited droplet. We provide an intuitive geometrical interpretation whereby the variation in the apparent contact angle is due to the rotation of the Neumann triangle. We also derive linear and quadratic corrections to the apparent contact angle as power series expansion in terms of pressure differences between the lubricant, droplet and gas phases. These expressions are much simpler and more compact compared to those previously derived by Semprebon et al. [Soft Matter, 2017, 13, 101-110].
Keywords
Cite
@article{arxiv.2105.04805,
title = {Apparent Contact Angle of Droplets on Liquid Infused Surfaces: Geometric Interpretation},
author = {Ciro Semprebon and Muhammad Subkhi Sadullah and Glen McHale and Halim Kusumaatmaja},
journal= {arXiv preprint arXiv:2105.04805},
year = {2021}
}