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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Dynamics of drop impact onto a solid sphere: spreading and retraction
TL;DR: In this paper, drop impact on a sphere is numerically investigated at moderate Reynolds and Weber numbers, with the help of numerical simulations, identifying the key regimes in the spreading and retraction, and quantitatively evaluating the effect of on the impact dynamics.
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A review of liquid droplet impacting onto solid spherical particles: A physical pathway to encapsulation mechanisms
TL;DR: In this article, a review of the literature on droplet impact on dry solid spherical surfaces is presented, with a focus on the latest scientific findings in droplet impingement onto curved surfaces.
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Drop impact dynamics on slippery liquid infused porous surfaces: influence of oil thickness
TL;DR: In this article, the influence of the oil thickness on the wetting properties and drop impact dynamics of new slippery liquid-infused porous surfaces (SLIPS) was investigated experimentally, and it was shown that a sufficiently thick layer of oil is necessary to avoid dewetting spots on the porous nanostructure.
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Bridging local to global dynamics of drop impact onto solid substrates
TL;DR: In this article, the shape of impacting drops onto a solid surface is investigated by probing the local flow velocity and the local thickness profile of the spreading lamella during the drop impact.
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A robust superhydrophobic surface and origins of its self-cleaning properties
TL;DR: In this article, a hierarchical super-hydrophobic surface was fabricated by electrodeposition of copper coating and chemical oxidation to form copper oxide, and the surface energy was lowered by chemical modification.