Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Diffraction Studies of Layering and Wetting Transitions
Thermodynamic arguments [22.1] show that when liquid and vapor phases co-exist in the presence of a surface several different types of behavior are possible: depending on the interfacial tensions between the three components, either the liquid can form droplets which contact the surface at a finite angle or it can spread out over the surface forming a uniform, macroscopically thick film interposed between the surface and the vapor phase. In the former case the liquid is said to partially wet the surface, in the latter it is said to wet it completely. A third possibility is that it will not wet the surface at all or, viewed another way, that the vapor phase will be interposed between the liquid and the surface. Co-existing solid and liquid or solid and vapor phases on a surface are also expected to show the same basic pattern of behavior Only recently has it been recognized that the temperature and/or concentration dependence of the relevant interfacial tensions can be quite different and that changes in these quantities can shift the system from one wetting state to another. A change from a partial to a non-wetting state is described as a “drying transition”; when the change is from a partial to a complete wetting state, it is referred to as a “wetting transition”.
Diffraction Studies of Layering and Wetting Transitions
Thermodynamic arguments [22.1] show that when liquid and vapor phases co-exist in the presence of a surface several different types of behavior are possible: depending on the interfacial tensions between the three components, either the liquid can form droplets which contact the surface at a finite angle or it can spread out over the surface forming a uniform, macroscopically thick film interposed between the surface and the vapor phase. In the former case the liquid is said to partially wet the surface, in the latter it is said to wet it completely. A third possibility is that it will not wet the surface at all or, viewed another way, that the vapor phase will be interposed between the liquid and the surface. Co-existing solid and liquid or solid and vapor phases on a surface are also expected to show the same basic pattern of behavior Only recently has it been recognized that the temperature and/or concentration dependence of the relevant interfacial tensions can be quite different and that changes in these quantities can shift the system from one wetting state to another. A change from a partial to a non-wetting state is described as a “drying transition”; when the change is from a partial to a complete wetting state, it is referred to as a “wetting transition”.
Diffraction Studies of Layering and Wetting Transitions
Vanselow, Ralf (Herausgeber:in) / Howe, Russell (Herausgeber:in) / Passell, L. (Autor:in) / Satija, S. K. (Autor:in) / Sutton, M. (Autor:in) / Suzanne, J. (Autor:in)
01.01.1986
33 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Layering - Modest Transformation
| Online Contents | 2002
Solid-state wetting transitions at grain boundaries
| British Library Online Contents | 2008