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Wetting of structured hydrophobic surfaces by water droplets
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Fibre Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Fibre Technology.ORCID iD: 0000-0001-8622-0386
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Fibre Technology.
2005 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 21, no 26, 12235-12243 p.Article in journal (Refereed) Published
Abstract [en]

Super-hydrophobic surfaces may arise due to an interplay between the intrinsic, relatively high, contact angle of the more or less hydrophobic solid surface employed and the geometric features of the solid surface. In the present work, this relationship was investigated for a range of different surface geometries, making use of surface free energy minimization. As a rule, the free energy minima (and maxima) occur when the Laplace and Young conditions are simultaneously fulfilled. Special effort has been devoted to investigating the free energy barriers present between the Cassie-Baxter (heterogeneous wetting) and Wenzel (homogeneous wetting) modes. The predictions made on the basis of the model calculations compare favorably with experimental results presented in the literature.

Place, publisher, year, edition, pages
2005. Vol. 21, no 26, 12235-12243 p.
Keyword [en]
rough surfaces, superhydrophobic surfaces, sliding angles, wettability, behavior, polymer, films
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:kth:diva-15261DOI: 10.1021/la052415+ISI: 000234063000030Scopus ID: 2-s2.0-29844452782OAI: oai:DiVA.org:kth-15261DiVA: diva2:333302
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2010-09-17Bibliographically approved
In thesis
1. Superhydrophobic Cellulosic Surfaces: Preparation and Characterisation of Superhydrophobic Cellulosic Surfaces. Investigation of the Free Energy Barriers Between Cassie-Baxter and Wenzel States of Wetting
Open this publication in new window or tab >>Superhydrophobic Cellulosic Surfaces: Preparation and Characterisation of Superhydrophobic Cellulosic Surfaces. Investigation of the Free Energy Barriers Between Cassie-Baxter and Wenzel States of Wetting
2008 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 2008. ix, 76 p.
Series
Trita-CHE-Report, ISSN 1654-1081 ; 2008:26
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:kth:diva-4714 (URN)978-91-7178-946-4 (ISBN)
Public defence
2008-05-09, D2, KTH, Lindstedtsvägen 5, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20100917Available from: 2008-04-29 Created: 2008-04-29 Last updated: 2010-09-17Bibliographically approved

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Wågberg, Lars

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