Slip on Superhydrophobic Surfaces

This review discusses the use of the combination of surface roughness and hydrophobicity for engineering large slip at the fluid-solid interface. These superhydrophobic surfaces were initially inspired by the unique water-repellent properties of the lotus leaf and can be employed to produce drag red...

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Bibliographic Details
Published in:Annual review of fluid mechanics 2010, Vol.42 (1), p.89-109
Main Author: ROTHSTEIN, Jonathan P
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Fluid dynamics
Fluid flow
Fundamental areas of phenomenology (including applications)
Hydrophobicity
Laminar
Laminar flow
Physics
Slip
Solid-fluid interfaces
Surface roughness
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Turbulence
Turbulence control
Turbulent flow
Turbulent flows, convection, and heat transfer
Wetting
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Summary:This review discusses the use of the combination of surface roughness and hydrophobicity for engineering large slip at the fluid-solid interface. These superhydrophobic surfaces were initially inspired by the unique water-repellent properties of the lotus leaf and can be employed to produce drag reduction in both laminar and turbulent flows, enhance mixing in laminar flows, and amplify diffusion-osmotic flows. We review the current state of experiments, simulations, and theory of flow past superhydrophobic surfaces. In addition, the designs and limitations of these surfaces are discussed, with an eye toward implementing these surfaces in a wide range of applications.
ISSN:0066-4189
1545-4479
DOI:10.1146/annurev-fluid-121108-145558