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Capillary Contact Angle in a Completely Wet Groove
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SYSNO ASEP 0435408 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Capillary Contact Angle in a Completely Wet Groove Author(s) Parry, A.O. (GB)
Malijevský, Alexandr (UCHP-M) RID, ORCID, SAI
Rascón, C. (ES)Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 113, č. 14 (2014), s. 146101Number of pages 5 s. Language eng - English Country US - United States Keywords phase equilibria ; wetting transitions ; narrow pores Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA13-09914S GA ČR - Czech Science Foundation (CSF) Institutional support UCHP-M - RVO:67985858 UT WOS 000343666500009 DOI 10.1103/PhysRevLett.113.146101 Annotation We consider the phase equilibria of a fluid confined in a deep capillary groove of width L with identical side walls and a bottom made of a different material. All walls are completely wet by the liquid. Using density functional theory and interfacial models, we show that the meniscus separating liquid and gas phases at two phase capillary coexistence meets the bottom capped end of the groove at a capillary contact angle theta(cap)(L) which depends on the difference between the Hamaker constants. If the bottom wall has a weaker wall-fluid attraction than the side walls, then theta(cap) > 0 even though all the isolated walls are themselves completely wet. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2015
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