General equation describing wetting of rough surfaces

Edward Bormashenko

doi:10.1016/j.jcis.2011.04.051

General equation describing wetting of rough surfaces

J Colloid Interface Sci. 2011 Aug 1;360(1):317-9. doi: 10.1016/j.jcis.2011.04.051. Epub 2011 Apr 24.

Author

Edward Bormashenko¹

Affiliation

¹ Ariel University Center of Samaria, Applied Physics Department, Ariel, Israel. edward@ariel.ac.il

PMID: 21555132
DOI: 10.1016/j.jcis.2011.04.051

Abstract

The problem of wetting is discussed in the framework of the variational approach. Derivation of the general equation describing the wetting of rough chemically homogenous surfaces is presented. The equation considers effects related to the line tension at the perimeter of the drop and at the details of the relief. The equation comprises as particular cases the Cassie and Wenzel equations and the equation proposed recently by Wong and Ho.