Journal
LANGMUIR
Volume 33, Issue 1, Pages 407-416Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.6b03752
Keywords
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Funding
- National Science Foundation of China [11372280, 11672269, 51675485]
- Zhejiang Provincial Natural Science Foundation of China [LY15E050016]
- Zhejiang Provincial Public Welfare Technology Application Research-Projects [2016C31041]
- Open Research Fund Program of State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology [GZ15205]
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The wetting transition on submersed superhydrophobic surfaces with hierarchical structures and the influence of trapped air on superhydrophobic stability are predicted based on the thermodynamics and mechanical analyses. The dewetting transition on the hierarchically structured surfaces is investigated, and two necessary thermodynamic conditions and a mechanical balance condition for dewetting transition are proposed. The corresponding thermodynamic phase diagram of reversible transition and the critical reversed pressure well explain the experimental results reported previously. Our theory provides a useful guideline for precise controlling of breaking down and recovering of sup erhydrophobicity by designing superhydrophobic surfaces with hierarchical structures under water.
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