Drop Impact on a Solid Surface
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In this article, the authors focus on recent experimental and theoretical studies, which aim at unraveling the underlying physics, characterized by the delicate interplay of liquid inertia, viscosity, and surface tension, but also the surrounding gas.Abstract:
A drop hitting a solid surface can deposit, bounce, or splash. Splashing arises from the breakup of a fine liquid sheet that is ejected radially along the substrate. Bouncing and deposition depend crucially on the wetting properties of the substrate. In this review, we focus on recent experimental and theoretical studies, which aim at unraveling the underlying physics, characterized by the delicate interplay of not only liquid inertia, viscosity, and surface tension, but also the surrounding gas. The gas cushions the initial contact; it is entrapped in a central microbubble on the substrate; and it promotes the so-called corona splash, by lifting the lamella away from the solid. Particular attention is paid to the influence of surface roughness, natural or engineered to enhance repellency, relevant in many applications.read more
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References
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Journal ArticleDOI
Drop Impact Dynamics: Splashing, Spreading, Receding, Bouncing ...
TL;DR: In this article, a review deals with drop impacts on thin liquid layers and dry surfaces, referred to as splashing, and their propagation is discussed in detail, as well as some additional kindred, albeit nonsplashing, phenomena like drop spreading and deposition, receding (recoil), jetting, fingering, and rebound.
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Candle Soot as a Template for a Transparent Robust Superamphiphobic Coating
TL;DR: An easily fabricated, transparent, and oil-rebounding superamphiphobic coating is designed, based on low-energy surfaces and roughness on the nano- and micrometer scales.
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Inkjet printing of single-crystal films
Hiromi Minemawari,Toshikazu Yamada,Hiroyuki Matsui,Jun'ya Tsutsumi,Simon Haas,Ryosuke Chiba,Ryosuke Chiba,Reiji Kumai,Reiji Kumai,Tatsuo Hasegawa +9 more
TL;DR: It is shown that mixing fine droplets of an antisolvent and a solution of an active semiconducting component within a confined area on an amorphous substrate can trigger the controlled formation of exceptionally uniform single-crystal or polycrystalline thin films that grow at the liquid–air interfaces.
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Robust omniphobic surfaces
TL;DR: Four design parameters are proposed that predict the measured contact angles for a liquid droplet on a textured surface, as well as the robustness of the composite interface, based on the properties of the solid surface and the contacting liquid, that allow two different families of re-entrant surfaces to be produced.
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Phenomena of liquid drop impact on solid and liquid surfaces
TL;DR: The fluid dynamic phenomena of liquid drop impact are described and reviewed in this article, and specific conditions under which the above phenomena did occur in experiments are analyzed and the characteristics of drop impact phenomena are described in detail.