Structured surfaces for a giant liquid slip
WebAug 5, 2008 · We study experimentally how two key geometric parameters (pitch and gas fraction) of textured hydrophobic surfaces affect liquid slip. The two are independently controlled on precisely fabricated microstructures of posts and grates, and the slip length … Webindependent effects of two key surface parameters – structural pitch (periodicity) and gas fraction – by developing well-defined and defect-free microstructured surfaces. The …
Structured surfaces for a giant liquid slip
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WebJul 1, 2024 · While the slippage of water past gas–liquid interfaces on structured SHP surfaces has attracted wide attention, the slip behavior at gas–liquid interfaces trapped by the wettability step still remains unclear. Using molecular dynamics simulations, we first demonstrated that the three-phase contact line can be pinned on a smooth substrate of ... WebWe study experimentally how two key geometric parameters (pitch and gas fraction) of textured hydrophobic surfaces affect liquid slip. The two are independently controlled on precisely fabricated microstructures of posts and grates, and the slip length of water on each sample is measured using a rheometer system. The slip length increases linearly …
WebAug 1, 2008 · The slip length increases linearly with the pitch but dramatically with the gas fraction above 90%, the latter trend being more pronounced on posts than on grates. Once … WebApr 1, 2010 · Superhydrophilic surfaces have attracted increasing interest for several of their remarkable properties, such as self-cleaning, 1 antifogging, 2 and enhancement of boiling …
WebWe study experimentally how two key geometric parameters (pitch and gas fraction) of textured hydrophobic surfaces affect liquid slip. The two are independently controlled on … WebMay 2, 2012 · Structured Surfaces for a Giant Liquid Slip. 5 August 2008 Physical Review Letters, Vol. 101, No. 6. Review of Fluid Slip over Superhydrophobic Surfaces and Its …
WebWe study experimentally how two key geometric parameters (pitch and gas fraction) of textured hydrophobic surfaces affect liquid slip. The two are independently controlled on …
WebJun 4, 2024 · A striped texture of the superhydrophobic surfaces is formed by infinite rectangular microcavities partially or completely filled with a gas. The microcavities are located periodically and oriented perpendicularly to the flow direction. ... “Structured surfaces for a giant liquid slip,” Phys. Rev. Let. 101 (6), 064501 (2008). Article ADS ... malawi government net worthWebFeb 21, 2013 · The texture of superhydrophobic coatings led to form a rugged morphology of the entrapped air layer, which would behave like microscale roughness to the liquid flow and offset the drag-reducing effects in the turbulent flow. malawi government ministries and departmentsWebJan 21, 2024 · On the other hand, passive control methods, such as superhydrophobic surfaces (Zhu et al. 2014;Lee et al. 2024;Sooraj et al. 2024), and microstructures (Bearman and Harvey 1993;Choi et al.... malawi government salary grades 2022WebFeb 6, 2024 · On the textured side of the channel, the liquid is in the Cassie state. No-slip and constant heat flux boundary conditions are imposed at the solid–liquid interfaces along the tips of the ridges, and the menisci between ridges are considered to be flat and adiabatic. malawi guest houseWebWe find how the slip and drag depend on the nine dimensionless groups that together characterize the surfactant transport near SHSs, the gas fraction and the normalized … malawi government websiteWebNov 25, 2024 · Liquid-infused structured non-wetting surfaces provide alternating no-slip and partial slip boundary conditions to the fluid flow, resulting in reduced friction at the interface. In this paper, an analytical model is developed for the evaluation of effective slip and, in turn, friction factor and drag reduction on liquid-infused structured non ... malawi health equity network mhenWebOct 25, 2013 · This paper presents an analytical investigation of constant property, steady, fully developed, laminar thermal transport in a parallel-plate channel comprised of metal superhydrophobic (SH) walls. The superhydrophobic walls considered here exhibit microribs and cavities aligned in the streamwise direction. The cavities are assumed to be … malawi healthcare