The wetting transition is an abrupt change, spontaneous or induced by external stimulus, in the wetting properties of a flat or rough solid surface.
Wetting of Rough Surfaces and Wetting States
Wetting is a spreading of liquid on a solid or liquid substrate. It is ubiquitous and of primary importance in chemical, automobile, and food industries and medicine, soil, and climate sciences. Various technological applications call for surfaces with a controlled wettability, in particular water- and oil-repellent surfaces. Rapid progress of nanotechnologies has allowed the fabrication of biomimetic surfaces demonstrating pronounced water repellence (the so-called lotus effect ). A variety of natural objects, such as birds’ and butterflies’ wings and legs of water striders, demonstrate extreme water repellency (superhydrophobicity, which is one of the surface tension effects of nanostructures) [2, 3, 4]. Various sophisticated experimental techniques, including UV lithography and...
KeywordsContact Angle Critical Pressure Superhydrophobic Surface Triple Line Baxter Equation
- 7.Marmur, A.: A guide to the equilibrium contact angle maze. In: Mittal, K.L. (ed.) Contact Angle Wettability and Adhesion, vol. 6, pp. 3–18. VSP, Leiden (2009)Google Scholar
- 9.Cassie, A.B..D., Baxter, S.: Wettability of porous surfaces. Trans. Faraday Soc. 40, 546–551 (1944)Google Scholar