Dual-scale roughness produces unusually water-repellent surfaces

Shirtcliffe, Neil, McHale, Glen, Newton, Michael, Chabrol, Gregoire and Perry, Carole (2004) Dual-scale roughness produces unusually water-repellent surfaces. Advanced Materials, 16 (21). pp. 1929-1932. ISSN 0935-9648

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Official URL: http://dx.doi.org/10.1002/adma.200400315


Super-hydrophobicity can be achieved on relatively smooth surfaces. Short, wide pillars on slightly rough surfaces are shown to produce super-hydrophobic surfaces (see Figure) where neither the pillars nor the slight roughness suffice alone. This use of two length scales to create super-hydrophobic surfaces directly mimics the mechanism used by some plants including the lotus.

Item Type: Article
Uncontrolled Keywords: superhydrophobic, contact angle, wetting, Cassie, Wenzel, roughness
Subjects: F100 Chemistry
F200 Materials Science
F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Glen McHale
Date Deposited: 23 Aug 2012 14:03
Last Modified: 17 Dec 2023 12:49
URI: https://nrl.northumbria.ac.uk/id/eprint/8338

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