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Published on: April 12, 2019
Infinite-order transitions in density-functional models of wetting.
1Department of Chemistry, Faculty of Science, Okayama University, Okayama 700-8530, Japan.
Physical Review Letters
|April 7, 2010
Summary
This study defines density-functional models for wetting transitions, identifying conditions for higher-order transitions. Researchers mapped a phase diagram showing first-order and higher-order wetting transitions.
Area of Science:
- Physical Chemistry
- Materials Science
- Statistical Mechanics
Background:
- Wetting phenomena are crucial in various physical and chemical processes.
- Understanding the order of wetting transitions is key to controlling interfacial properties.
Purpose of the Study:
- To define density-functional models for analyzing wetting transitions.
- To derive conditions governing the order of these transitions.
- To explore the phase space of wetting phenomena.
Main Methods:
- Development of a class of density-functional models.
- Derivation of a necessary condition for higher-order wetting transitions.
- Determination of a locus of wetting transitions in a two-variable phase space.
- Rationalization of observed behaviors using an analytically soluble model.
Main Results:
- A class of density-functional models for wetting transitions was established.
- A necessary condition for transitions of higher than first order was derived.
- A phase diagram was mapped, revealing states with first-order and higher-order (including infinite-order) transitions.
- The complex behavior of wetting transitions was explained through a related, analytically solvable model.
Conclusions:
- Density-functional theory provides a robust framework for studying wetting transitions.
- The study elucidates the conditions and characteristics of various orders of wetting transitions.
- The findings offer insights into controlling interfacial behavior in materials and chemical systems.
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