Journal ArticleDOI
Contact time of a bouncing drop
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TLDR
This work measures how long the drop remains in contact with the solid during the shock to help quantify the efficiency of water-repellent surfaces (super-hydrophobic solids) and to improve water-cooling of hot solids, which is limited by the rebounding of drops as well as by temperature effects.Abstract:
When a liquid drop lands on a solid surface without wetting it, it bounces with remarkable elasticity. Here we measure how long the drop remains in contact with the solid during the shock, a problem that was considered by Hertz for a bouncing ball. Our findings could help to quantify the efficiency of water-repellent surfaces (super-hydrophobic solids) and to improve water-cooling of hot solids, which is limited by the rebounding of drops as well as by temperature effects.read more
Citations
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Self-cleaning surfaces - virtual realities
TL;DR: Key advances in the understanding and fabrication of surfaces with controlled wetting properties are about to make the dream of a contamination-free (or 'no-clean') surface come true.
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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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Natural and biomimetic artificial surfaces for superhydrophobicity, self-cleaning, low adhesion, and drag reduction
Bharat Bhushan,Yong Chae Jung +1 more
TL;DR: In this paper, the theoretical mechanisms of the wetting of rough surfaces are presented followed by the characterization of natural leaf surfaces and a comprehensive review is presented on artificial super-hydrophobic surfaces fabricated using various fabrication techniques and the influence of micro-, nano-and hierarchical structures on superhydrophobicity, self-cleaning, low adhesion, and drag reduction.
Journal ArticleDOI
Superhydrophobic surfaces: from structural control to functional application
TL;DR: A superhydrophobic surface is a surface with a water contact angle close to or higher than 150° as discussed by the authors, and it is the combination of surface roughness and low-surface-energy modification that leads to super-hydrophobicity.
Journal ArticleDOI
Superhydrophobic Carbon Nanotube Forests
Kenneth K. S. Lau,José Bico,Kenneth B. K. Teo,Manish Chhowalla,Gehan A. J. Amaratunga,William I. Milne,Gareth H. McKinley,Karen K. Gleason +7 more
TL;DR: In this paper, the creation of a stable, superhydrophobic surface using the nanoscale roughness inherent in a vertically aligned carbon nanotube forest together with a thin conformal hydrophobic poly(tetrafluoroethylene) (PTFE) coating on the surface of the nanotubes was demonstrated.
References
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Theory of Elasticity (3rd ed.)
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On the Capillary Phenomena of Jets
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Recent Studies on Super-Hydrophobic Films
TL;DR: In this article, the fundamental theories on the wettability of a hydrophobic rough solid surface, together with recent works on the processing and properties of super-hydrophobic films are reviewed.
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The heat transfer from a hot wall to impinging water drops in the spheroidal state
TL;DR: In this paper, the heat transfer from a hot metal wall to impinging mist droplets has been studied with a non-stationary method, based on differentiation of the cooling curve of a thin metal disc, that was heated to a high temperature, and then cooled by a mist of steam and water droplets flowing perpendicular to it.