Journal ArticleDOI
Maximal deformation of an impacting drop
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TLDR
In this article, the impact of a liquid drop of low viscosity on a super-hydrophobic surface was studied. But the authors focused on the effect of the drop on the spread of the liquid on the surface.Abstract:
We first study the impact of a liquid drop of low viscosity on a super-hydrophobic surface. Denoting the drop size and speed as are the liquid density and surface tension). This law is also observed to hold on partially wettable surfaces, provided that liquids of low viscosity (such as water) are used. The law is interpreted as resulting from the effective acceleration experienced by the drop during its impact. Viscous drops are also analysed, allowing us to propose a criterion for predicting if the spreading is limited by capillarity, or by viscosity.read more
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Journal ArticleDOI
Water droplet impact on elastic superhydrophobic surfaces.
TL;DR: It is shown that surface elasticity also affects droplet impact, where a droplet impacting an elastic superhydrophobic surface can lead to a two-fold reduction in contact time compared to equivalent rigid surfaces.
Journal ArticleDOI
Modeling the Maximum Spreading of Liquid Droplets Impacting Wetting and Nonwetting Surfaces
TL;DR: The dynamic contact angle at maximum spreading is found to be generally higher than the equilibrium contact angle, showing that statically wetting surfaces can become less wetting or even nonwetting under dynamic droplet impact.
Journal ArticleDOI
Droplet impact dynamics on a spherical particle
Subhasish Mitra,Mayur J. Sathe,Elham Doroodchi,Ranjeet P. Utikar,Milin Shah,Vishnu Pareek,Jyeshtharaj B. Joshi,Geoffrey Evans +7 more
TL;DR: In this article, the effect of Weber number on spreading of droplets of three different liquids namely water, isopropyl alcohol and acetone was studied using a high speed camera.
Journal ArticleDOI
Stretchable Superhydrophobicity from Monolithic, Three-Dimensional Hierarchical Wrinkles
TL;DR: Stretchable superhydrophobicity was possible because of the monolithic nature of the hierarchical wrinkles as well as partial preservation of nanoscale structures under stretching.
Journal ArticleDOI
Drop impact of yield-stress fluids
Li-Hua Luu,Yoël Forterre +1 more
TL;DR: In this paper, the normal impact of a drop of yield-stress fluid on a flat rigid surface is investigated experimentally using different model fluids (polymer microgels, clay suspensions) and impacted surfaces (partially wettable, super-hydrophobic).