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How to make the Cassie wetting state stable?
Langmuir. 2011 Jul 05; 27(13):8171-6.L

Abstract

Wetting of rough hydrophilic and hydrophobic surfaces is discussed. The stability of the Cassie state, with air trapped in relief details under the droplet, is necessary for the design of true superhydrophobic surfaces. The potential barrier separating the Cassie state and the Wenzel state, for which the substrate is completely wetted, is calculated for both hydrophobic and hydrophilic surfaces. When the surface is hydrophobic, the multiscaled roughness of pillars constituting the surface increases the potential barrier separating the Cassie and Wenzel states. When water fills the hydrophilic pore, the energy gain due to the wetting of the pore hydrophilic wall is overcompensated by the energy increase because of the growth of the high-energetic liquid-air interface. The potential barrier separating the Cassie and Wenzel states is calculated for various topographies of surfaces. Structural features of reliefs favoring enhanced hydrophobicity are elucidated.

Authors+Show Affiliations

Applied Physics Department and Department of Chemistry and Biotechnology Engineering, The Research Institute, Ariel University Center of Samaria, Post Office Box 3, Ariel 40700, Israel.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21644550

Citation

Whyman, Gene, and Edward Bormashenko. "How to Make the Cassie Wetting State Stable?" Langmuir : the ACS Journal of Surfaces and Colloids, vol. 27, no. 13, 2011, pp. 8171-6.
Whyman G, Bormashenko E. How to make the Cassie wetting state stable? Langmuir. 2011;27(13):8171-6.
Whyman, G., & Bormashenko, E. (2011). How to make the Cassie wetting state stable? Langmuir : the ACS Journal of Surfaces and Colloids, 27(13), 8171-6. https://doi.org/10.1021/la2011869
Whyman G, Bormashenko E. How to Make the Cassie Wetting State Stable. Langmuir. 2011 Jul 5;27(13):8171-6. PubMed PMID: 21644550.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - How to make the Cassie wetting state stable? AU - Whyman,Gene, AU - Bormashenko,Edward, Y1 - 2011/06/06/ PY - 2011/6/8/entrez PY - 2011/6/8/pubmed PY - 2011/6/8/medline SP - 8171 EP - 6 JF - Langmuir : the ACS journal of surfaces and colloids JO - Langmuir VL - 27 IS - 13 N2 - Wetting of rough hydrophilic and hydrophobic surfaces is discussed. The stability of the Cassie state, with air trapped in relief details under the droplet, is necessary for the design of true superhydrophobic surfaces. The potential barrier separating the Cassie state and the Wenzel state, for which the substrate is completely wetted, is calculated for both hydrophobic and hydrophilic surfaces. When the surface is hydrophobic, the multiscaled roughness of pillars constituting the surface increases the potential barrier separating the Cassie and Wenzel states. When water fills the hydrophilic pore, the energy gain due to the wetting of the pore hydrophilic wall is overcompensated by the energy increase because of the growth of the high-energetic liquid-air interface. The potential barrier separating the Cassie and Wenzel states is calculated for various topographies of surfaces. Structural features of reliefs favoring enhanced hydrophobicity are elucidated. SN - 1520-5827 UR - https://www.unboundmedicine.com/medline/citation/21644550/How_to_make_the_Cassie_wetting_state_stable L2 - https://dx.doi.org/10.1021/la2011869 DB - PRIME DP - Unbound Medicine ER -
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