journal article Open Access Nov 25, 2015

Symmetry breaking in drop bouncing on curved surfaces

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Abstract
AbstractThe impact of liquid drops on solid surfaces is ubiquitous in nature, and of practical importance in many industrial processes. A drop hitting a flat surface retains a circular symmetry throughout the impact process. Here we show that a drop impinging on Echevaria leaves exhibits asymmetric bouncing dynamics with distinct spreading and retraction along two perpendicular directions. This is a direct consequence of the cylindrical leaves that have a convex/concave architecture of size comparable to the drop. Systematic experimental investigations on mimetic surfaces and lattice Boltzmann simulations reveal that this novel phenomenon results from an asymmetric momentum and mass distribution that allows for preferential fluid pumping around the drop rim. The asymmetry of the bouncing leads to ∼40% reduction in contact time.
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Published
Nov 25, 2015
Vol/Issue
6(1)
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Cite This Article
Yahua Liu, Matthew Andrew, Jing Li, et al. (2015). Symmetry breaking in drop bouncing on curved surfaces. Nature Communications, 6(1). https://doi.org/10.1038/ncomms10034
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