Type
ArticleAuthors
Xu, XianminWang, Xiaoping
KAUST Grant Number
SA-C0040/UK-C0016Date
2012-08-29Online Publication Date
2012-08-29Print Publication Date
2013-02Permanent link to this record
http://hdl.handle.net/10754/599938
Metadata
Show full item recordAbstract
In this paper, we derive a modified Cassie's equation for wetting on chemically patterned surfaces from a homogenization approach. The derivation reveals that effective contact angle is a local average of the static contact angle along the contact line which describes all possible equilibrium states including the local minimum of the free energy of the system. The usual Cassie's state which corresponds to the global minimum is only a special case. We then discuss the contact angle hysteresis on chemically patterned surfaces. © 2012 Springer-Verlag.Citation
Xu X, Wang X (2012) The modified Cassie’s equation and contact angle hysteresis. Colloid and Polymer Science 291: 299–306. Available: http://dx.doi.org/10.1007/s00396-012-2748-1.Sponsors
This publication was based on work supported in part by Award No SA-C0040/UK-C0016, made by King Abdullah University of Science and Technology (KAUST), Hong Kong RGC-CERG grants 603107 and 604209, Chinese NSFC project 11001260, and by National Center for Mathematics and Interdisciplinary Sciences, CAS.Publisher
Springer NatureJournal
Colloid and Polymer Scienceae974a485f413a2113503eed53cd6c53
10.1007/s00396-012-2748-1