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Influence of Intermolecular Forces at Critical-point Wedge Filling.
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SYSNO ASEP 0466369 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Influence of Intermolecular Forces at Critical-point Wedge Filling. Author(s) Malijevský, Alexandr (UCHP-M) RID, ORCID, SAI
Parry, A.O. (GB)Source Title Physical Review E. - : American Physical Society - ISSN 2470-0045
Roč. 93, č. 4 (2016), s. 040801Number of pages 5 s. Language eng - English Country US - United States Keywords narrow pores ; fluids ; interface Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA16-12291S GA ČR - Czech Science Foundation (CSF) Institutional support UCHP-M - RVO:67985858 UT WOS 000374553500001 EID SCOPUS 84964490295 DOI 10.1103/PhysRevE.93.040801 Annotation We usemicroscopic density functional theory to study filling transitions in systems with long-ranged wall-fluid and short-ranged fluid-fluid forces occurring in a right-angle wedge. By changing the strength of the wall-fluid interaction we can induce both wetting and filling transitions over a wide range of temperatures and study the order of these transitions. At low temperatures we find that both wetting and filling transitions are first order in keeping with predictions of simple local effective Hamiltonian models. However close to the bulk critical point the filling transition is observed to be continuous even though the wetting transition remains first order and the wetting binding potential still exhibits a small activation barrier. The critical singularities for adsorption for the continuous filling transitions depend on whether retarded or nonretarded wall-fluid forces are present and are in excellent agreement with predictions of effective Hamiltonian theory even though the change in the order of the transition was not anticipated. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2017
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