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    Hierarchical structures for natural superhydrophobic surfaces

    Access Status
    Fulltext not available
    Authors
    Li, Wei
    Amirfazli, A.
    Date
    2008
    Type
    Journal Article
    
    Metadata
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    Citation
    Li, W. and Amirfazli, A. 2008. Hierarchical structures for natural superhydrophobic surfaces. Soft Matter. 4 (3): pp. 462-466.
    Source Title
    Soft Matter
    DOI
    10.1039/b715731b
    ISSN
    1744-683X
    School
    Department of Spatial Sciences
    URI
    http://hdl.handle.net/20.500.11937/20344
    Collection
    • Curtin Research Publications
    Abstract

    Superhydrophobicity of natural surfaces has recently been studied intensively with the aim of designing artificial surfaces. However, the role of hierarchical structures in such surfaces has not been completely understood. Based on thermodynamic free energy analysis, we reveal that the harmonious combination of hydrophobic materials and adequately rough geometry of these natural surfaces can lead to stable composite states. Furthermore, based on a set of criteria, we find that the dual scales of the hierarchical structure for surface geometry can guarantee not only wetting but also suitable mechanical characteristics. This study provides a mechanistic/thermodynamic explanation of how nature has developed a mechanically durable superhydrophobic surface, which can be an inspiration for the fabrication of artificial surfaces. © The Royal Society of Chemistry 2008.

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