Drop Impact on a Solid Surface
Reads0
Chats0
TLDR
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
Citations
More filters
Journal ArticleDOI
Droplet Impact on Asymmetric Hydrophobic Microstructures
TL;DR: In this article , a high-speed camera was used to study the impact of droplet impact on surfaces with inclined micropillars and found that the difference in wetting behavior of the structure sidewalls caused slower retraction of the contact line in the direction against the inclination compared to with the inclination.
Journal ArticleDOI
Effects of the surface roughness on the entrainment heights of oil–gas mixture impingement on the vertical wall
TL;DR: In this paper, the effect of surface roughness on entrainment height was investigated by spraying the oil-gas mixture onto a vertical wall, and the results showed that the entrainments range from 2 to 12mm on the surface with a roughness of 0.3-4.5μm when the impinge velocity is 3-5m/s and the Sauter mean diameter of the impinging droplets is approximately 40μm.
Journal ArticleDOI
Bouncing characteristics of an elliptical footprint drop on a solid surface
TL;DR: In this paper, the authors investigate the bouncing characteristics of elliptical footprint drops on nonwetting surfaces through numerical simulation and determine a splash regime for varying geometric aspect ratio (AR), impact velocity and effective interfacial tension.
Journal ArticleDOI
Scaling laws for the droplet rebound with lateral motion after impacting on heterogeneous surfaces
TL;DR: In this paper , the spontaneous rebound with lateral motion of a water droplet impacting on a hydrophobic substrate decorated with the hydrophilic pattern is studied numerically and theoretically.
Posted Content
Supressed splashing on elastic membranes
TL;DR: The splashing threshold for impact on thin membranes is determined as a function of the tension in the membrane and its elastic properties, correlated to the membrane deformation, which is simultaneously measured using a laser profilometry technique.
References
More filters
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.