Controlling droplet spreading with topography

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August undefined, 2024

WebFeb 1, 2016 · Research carried out over the past couple of decades has established that controlled propulsion 1, 2 of liquid droplets on a solid surface not only generates fascinating science, but also promises... WebIn the present study, the spreading of a two-dimensional droplet over a topographical substrate is revisited, although now the spreading is due to the combined effects of …

Controlling droplet spreading with topography

WebFIG. 6: Experimentally measured spreading of a droplet on a flat substrate (θA < 1 ). (a) Evolution of the droplet radius with time. Inset: Early time dynamics recorded both in - "Controlling droplet spreading with topography" WebSearch text. Search type Research Explorer Website Staff directory. Alternatively, use our A–Z index f10 meaning in keyboard

Controlling droplet spreading with topography Research Explorer …

WebThe results show the dominant factors in determining droplet shapes to be surface topography and the self-similarity of the surface structure. Quantified results of the … WebMar 15, 2024 · “Slow” surfactants that take a lot of time to reach newly created droplet surface, only slightly decrease or even increase the surface tension, while “fast” surfactants, on the other hand, allow efficient wetting of aqueous solutions on hydrophobic surfaces. WebOct 27, 2024 · A water droplet (~5 μl) deposited on the as-fabricated surface displays an asymmetric transport behavior. As shown in Fig. 1D and movie S1, there is a dominant … does crashing a rental car affect insurance

Droplet spread definition of droplet spread by Medical dictionary

Snap evaporation of droplets on smooth topographies - Nature

WebApr 11, 2024 · Finally, the variation of the surface topography, either spatially through designed patterns, or dynamically via forced droplet motion 29 or actuation of flexible … WebControlling droplet spreading with topography Kant, P. ; Hazel, A. L. ; Dowling, M. ; Thompson, A. B. ; Juel, A. We present an experimental system that can be used to study … does crash cause insurance to increaseWebconcentrate on the spreading of a droplet within a recessed stadium-shaped pixel, with applica-tions to the manufacture of POLED displays, and nd that the sloping side wall of the pixel can either locally enhance or hinder spreading depending on whether the topography gradient ahead of the contact line is positive or negative, respectively. does crate and barrel ship to hawaii

"WebNov 18, 2009 · The spreading of a droplet of a liquid on a smooth solid surface is often described by the Hoffman-de Gennes law, which relates the edge speed, v (e), to the dynamic and equilibrium contact angles θ and θ (e) through [Formula: see text]. " - Controlling droplet spreading with topography

Controlling droplet spreading with topography

Droplet dynamics on slippery surfaces: small droplet, big impact

WebMar 14, 2024 · The magnetic control of droplet impact is by far more efficient than that reported in ref. . ... The results of droplet spreading on the flat surface are similar to the results in ref. ... Surface topography of the fabricated microstructures was imaged by optical coherence tomography (OCT) system (Telesto TEL221, Thorlabs Inc., Newton, … WebApr 11, 2024 · During the spreading and retracting stages, the solid–liquid contact part is pulled to the right by the surface adhesion force, the upper layer of the droplet lags behind the lower layer of the droplet, and the droplet tilts upward and away from the SGS (t * = 2. 49). Because the droplet contracts to a similar extent downstream and upstream ...

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WebJun 24, 2024 · We will describe various droplet dynamics, including droplet spreading, retraction, and bouncing on different surfaces as well as uncovering the simple physics … WebAug 1, 2013 · 1. Introduction. The spreading of a clean, isothermal, liquid drop on a smooth, planar substrate stands as a prototype system for studying the dynamics of moving …

WebJun 24, 2024 · A droplet with r0 = 1 mm first spreads to its maximum extension in a pancake shape at ∼2.3 ms, recedes towards the centre and finally bounces off the surface at ∼16.6 ms. Webdroplet spread: The direct dissemination of a pathogen from a reservoir to a susceptible host’s conjunctiva, nose or mouth—by spray with relatively large, short-ranged (circa 1 …

WebMay 24, 2024 · In this paper we will describe a series of experiments of droplet spreading on sawtooth-like surface structures with well-defined pitches and angles. A qualitative ‘toy model’ is formulated and... WebThis required detailed understanding and modeling of liquid droplet impact and spreading on complex surfaces, chemical sorption in polymer-based materials, and dispersion into the surrounding ...

WebNov 22, 2024 · The precise control of droplet transport is a core step to realize countless physical and chemical processes. 2 ... “ Directional transport of high-temperature Janus droplets mediated by structural topography,” Nat. Phys. 12, 606 ... White arrows mark the location of the target droplet. The spreading radius of the 10 wt. % PG droplet ...

does crate and barrel have salesWebApr 26, 2024 · We focus on exploring how wettability, liquid properties, and substrate topography influence the exponent α and coefficient C. Instead of discussing the effects … does cranberry sauce need to be refrigeratedWebSep 6, 2024 · We present an experimental system that can be used to study the dynamics of a picoliter droplet (in-flight radius of 12.2μm) as it spreads over substrates with topographic variations. We concentrate on the spreading of a droplet within a recessed … does cra take credit card paymentWebMay 1, 2024 · The results provide important insight into the design of wettability gradient surfaces for controlling droplet transport. ... On a surface with structural topography, therefore, ... Smart design of wettability-patterned gradients on substrate-independent coated surfaces to control unidirectional spreading of droplets. Soft Matter, 13 (2024), … f10 n55 cold air intakeWebOct 22, 2010 · The influence of gravity on the motion of a two-dimensional droplet of a partially wetting fluid over a topographical substrate is considered. The spreading dynamics is modeled under the assumption of small contact angles in which case the long-wave expansion in the Stokes-flow regime can be employed to derive a single equation for the … f10 m5 headlightsWebHypothesis: Wetting characterization and the production of engineered surfaces showing distinct contact angles or spreading behavior is of major importance for many industrial and scientific applications. As chemical composition plays a major role in the wetting behavior of flat samples, wettability, capillary forces and resulting droplet spreading on anisotropic … f10 m5 injectorsWebFindings: While a carbon coating leads to pronounced wettability and spreading along the topographic anisotropy, an inert gold-palladium coating can fully suppress anisotropic … f10 mounting flange