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Drag reduction methods at solid‒liquid interfaces

Friction 2022年第4期10卷 491-515页

作者： Min LIU Liran MA State Key Laboratory of Tribology Tsinghua UniversityBeijing 100084China

Friction drag is a nonnegligible matter when relative motion happens between solid and liquid phase,which brings many inconveniences in ship navigation,fluid transportation,microfluid devices,*** various methods have been developed focusing on friction drag *** this article,a review of several widely studied drag reduction methods is given,specially,their advantages and limitations in practical applications are ***,a comparison of different methods is made and the development prospect of drag reduction is concluded.

关键词： drag reduction microstructures superhydrophobic surfaces supercavitation polymer additives

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Impact of Drops on Non-wetting Biomimetic surfaces

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Journal of Bionic Engineering 2009年第4期6卷 330-334页

作者： Alain Merlen Philippe Brunet Institut d'Electronique de Microelectronique et Nanotechnologie IEMN Universite des sciences et technologies de Lille1UMR CNRS 8520Avenue Poincare BP 6006959652 Villeneuve d'Ascq cedexFrance

We have carried out an experimental study of liquid drop impact on superhydrophobic substrates covered by a carpet of chemically coated *** micro-structure of the surface is similar to some biological ones(Lotus leaf for example).In this situation the contact angle can then be considered as equal to 180 degrees,with no *** to its initial inertia,the drop experiences a flattening phase after it hits the surface,taking the shape of a *** it reaches its maximal lateral extension,the drop begins to retract and bounces *** have extracted the lateral extension of the drop,and we propose a model that explains the *** find a limit initial velocity beyond which the drop protrudes into the nano-wire *** discuss the relevance of practical issues in terms of self-cleaning surfaces or spray-cooling.

关键词： superhydrophobic surfaces drop impact

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superhydrophobic surface of Mg alloys:A review

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Journal of Magnesium and Alloys 2018年第1期6卷 59-70页

作者： M.Yeganeh N.Mohammadi Department of Materials Science and Engineering Faculty of EngineeringShahid Chamran University of AhvazAhvazIran

In the present review,the formation of superhydrophobic(SHP)structures on the surface of Mg alloys was *** methods including hydrothermal technique,chemical and electrochemical deposition,conversion and polymer coating,and etching routes were *** superhydrophobicity could form on the surface of Mg alloys by the application of different chemical,electrochemical,and physical methods followed by the immersion of these alloys in the solution containing modifying agents including fatty acids or long-chain *** formed morphology,composition,and contact angle were reported and the effect of synthesis route on these characteristics was reviewed.

关键词： Mg alloys superhydrophobic surfaces Chemical deposition Electrochemical coating Conversion coating Polymer coating Etching

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Recent Progress in superhydrophobic Coatings Using Molecular Dynamics Simulations and Experimental Techniques

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Non-Metallic Material Science 2022年第1期4卷 23-32页

作者： Sushanta K.Sethi Department of Metallurgical Engineering&Materials Science IIT BombayPowaiMumbaiIndia

superhydrophobic(SH)coatings are intended to resist a surface from corrosion and thereby increases the product life *** is also a promising solution to save cleaning costs and time by providing self-clean nature to the *** review article provides the most recent updates in designing SH surfaces and their characterizations adopted both in experimental and computational *** gain a comprehensive perspective,the SH surfaces present in nature those are inspiring human beings to mimic such surfaces are introduced at the beginning of this ***,different fabrication techniques undertaken recently to design artificial SH surfaces are briefly *** progress in computations employed in the development of SH surfaces is then ***,the limitations in SH surfaces are ***,perceptiveness of different strategies and their limitations are presented in the concluding remarks and ***,this mini review article brings together and highlights the significant advancements in fabrication of superhydrophobic surfaces which may surely help the early-stage researchers/scientists to plan their work accordingly.

关键词： superhydrophobic surfaces Self-clean coatings Molecular dynamics(MD)simulations Bio-mimetic superhydrophobic surfaces Chemical vapor deposition Anti-corrosion coatings

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