Number of the records: 1
Filling and Wetting Transitions at Grooved Substrates
- 1.
SYSNO ASEP 0425956 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Filling and Wetting Transitions at Grooved Substrates Author(s) Malijevský, Alexandr (UCHP-M) RID, ORCID, SAI Source Title Journal of Physics-Condensed Matter. - : Institute of Physics Publishing - ISSN 0953-8984
Roč. 25, č. 44 (2013), s. 445006Number of pages 13 s. Language eng - English Country GB - United Kingdom Keywords density-functional ; theory ; capillary 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 000325897900008 DOI 10.1088/0953-8984/25/44/445006 Annotation The wetting and filling properties of a fluid adsorbed on a solid grooved substrate are studied by means of a microscopic density functional theory. The grooved substrates are modelled using a solid slab, interacting with the fluid particles via long-range dispersion forces, to which a one-dimensional array of infinitely long rectangular grooves is sculpted. By investigating the effect of the groove periodicity and the width of the grooves and the ridges, a rich variety of different wetting morphologies is found. In particular, we show that for a saturated ambient gas, the adsorbent can occur in one of four wetting states characterized by (i) empty grooves, (ii) filled grooves, (iii) a formation of mesoscopic hemispherical caps (iv) a macroscopically wet surface. The character of the transition between particular regimes, that also extend off-coexistence, sensitively depends on the model geometry. The temperature at which the system becomes completely wet is considerably higher than that for a flat wall. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2014
Number of the records: 1