Confinement Effects in Droplet Formation on a Solid Particle.

Autor:	Shchekin AK; Department of Statistical Physics, Saint Petersburg State University, Faculty of Physics, 7-9 Universitetskaya nab., St. Petersburg, 199034, Russia., Gosteva LA; Department of Statistical Physics, Saint Petersburg State University, Faculty of Physics, 7-9 Universitetskaya nab., St. Petersburg, 199034, Russia., Lebedeva TS; Department of Statistical Physics, Saint Petersburg State University, Faculty of Physics, 7-9 Universitetskaya nab., St. Petersburg, 199034, Russia., Tatyanenko DV; Department of Statistical Physics, Saint Petersburg State University, Faculty of Physics, 7-9 Universitetskaya nab., St. Petersburg, 199034, Russia.
Jazyk:	angličtina
Zdroj:	Langmuir : the ACS journal of surfaces and colloids [Langmuir] 2024 Mar 12; Vol. 40 (10), pp. 5174-5182. Date of Electronic Publication: 2024 Feb 28.
DOI:	10.1021/acs.langmuir.3c03342
Abstrakt:	Formation of a droplet around a spherical solid particle in supersaturated vapor is considered. The number and stability of equilibrium solutions in a closed small system are studied in the canonical ensemble in comparison to an open system in the grand canonical ensemble. Depending on the system's parameters, two modes exist in the canonical ensemble: the first one with only one solution and the second one with three solutions; the presence of the third solution is due to confinement. The analysis is conducted first on a macroscopic thermodynamic level of description, and then the results are supported by studies within two versions of classical density functional theory: the square-gradient approximation with the Carnahan-Starling equation of state for hard spheres on a completely wettable particle and the random-phase approximation with the fundamental measure theory on a poorly wettable particle. In the latter case, a solution breaking the spherical symmetry is observed at a small total number of molecules.
Databáze:	MEDLINE
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