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Issue 4, 2010
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Immersed superhydrophobic surfaces: Gas exchange, slip and drag reduction properties

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Abstract

Superhydrophobic surfaces combine high aspect ratio micro- or nano-topography and hydrophobic surface chemistry to create super water-repellent surfaces. Most studies consider their effect on droplets, which ball-up and roll-off. However, their properties are not restricted to modification of the behaviour of droplets, but potentially influence any process occurring at the solid-liquid interface. Here, we highlight three recent developments focused on the theme of immersed superhydrophobic surfaces. The first illustrates the ability of a superhydrophobic surface to act as a gas exchange membrane, the second demonstrates a reduction in drag during flow through small tubes and the third considers a macroscopic experiment demonstrating an increase in the terminal velocity of settling spheres.

Graphical abstract: Immersed superhydrophobic surfaces: Gas exchange, slip and drag reduction properties

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Publication details

The article was received on 01 Sep 2009, accepted on 13 Oct 2009 and first published on 19 Nov 2009


Article type: Highlight
DOI: 10.1039/B917861A
Citation: Soft Matter, 2010,6, 714-719
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    Immersed superhydrophobic surfaces: Gas exchange, slip and drag reduction properties

    G. McHale, M. I. Newton and N. J. Shirtcliffe, Soft Matter, 2010, 6, 714
    DOI: 10.1039/B917861A

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