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 on solid surfaces: evolution of impact force and self-similar spreading
TL;DR: In this paper, the authors investigate the dynamics of drop impacts on dry solid surfaces by synchronizing high-speed photography with fast force sensing, and simultaneously measure the temporal evolution of the shape and impact force of impacting drops over a wide range of Reynolds numbers (Re).
Journal ArticleDOI
Droplet impact on cross-scale cylindrical superhydrophobic surfaces
TL;DR: In this article, the authors studied the impact dynamics on cross-scale cylindrical superhydrophobic surfaces and found that the reduction of the contact time is achieved on the surfaces with a ridge smaller or larger than the droplets, spanning different bouncing regimes.
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Viscous Droplet Impact on Nonwettable Textured Surfaces
Mehran Abolghasemibizaki,Mehran Abolghasemibizaki,Neda Dilmaghani,Reza Mohammadi,Carlos E. Castano +4 more
TL;DR: In this work, liquid drops with various viscosities and impact velocities were investigated and their behavior was correlated with contact time upon impinging non-wettable flat and textured surfaces.
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Maximum Spread of Droplet Impacting onto Solid Surfaces with Different Wettabilities: Adopting a Rim-Lamella Shape.
TL;DR: Comprehensive evaluations of the model demonstrate that the theoretical prediction can well recover the features of the experimental observations and the proposed model can be applied to predict energy conversion/dissipation during the droplet spreading process and the effects of surface wettability on βm in a reasonable manner.
Journal ArticleDOI
Prompting Splash Impact on Superamphiphobic Surfaces by Imposing a Viscous Part.
TL;DR: It is demonstrated that the splash of the low‐viscosity part of this Janus drop on superamphiphobic surfaces can be significantly promoted by increasing the viscosity of the impinging drop.