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Filling, depinning, unbinding: Three adsorption regimes for nanocorrugated substrates.

SYSNO ASEP	0531839
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Filling, depinning, unbinding: Three adsorption regimes for nanocorrugated substrates.
Author(s)	Malijevský, Alexandr (UCHP-M)_{RID, ORCID, SAI}
Article number	012804
Source Title	Physical Review E. - : American Physical Society - ISSN 2470-0045 Roč. 102, č. 1 (2020)
Number of pages	13 s.
Language	eng - English
Country	US - United States
Keywords	capillary condensation ; phase-equilibria ; interface
Subject RIV	CF - Physical ; Theoretical Chemistry
OECD category	Physical chemistry
R&D Projects	GA20-14547S GA ČR - Czech Science Foundation (CSF)
Method of publishing	Open access
Institutional support	UCHP-M - RVO:67985858
UT WOS	000550130600002
EID SCOPUS	85089510217
DOI	10.1103/PhysRevE.102.012804
Annotation	We study adsorption at periodically corrugated substrates formed by scoring rectangular grooves into a planar solid wall which interacts with the fluid via long-range (dispersion) forces. The grooves are assumed to be macroscopically long but their depth, width, and separations can all be molecularly small. We show that the entire adsorption process can be divided into three parts consisting of filling the grooves by a capillary liquid, depinning of the liquid-gas interface from the wall edges and unbinding of the interface from the top of the wall, which is accompanied by a rapid but continuous flattening of its shape. Using a nonlocal density functional theory and mesoscopic interfacial models all the regimes are discussed in some detail to reveal the complexity of the entire process and subtle aspects that affect its behavior. In particular, it is shown that the nature of the depinning phenomenon is governed by the width of the wall pillars (separating grooves), while the width of the grooves only controls the location of the depinning first-order transition, if present.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2021
Electronic address	http://hdl.handle.net/11104/0310480

Number of the records: 1