Disjoining Pressure in Thin Spherical Liquid Films and Vapor Layers with Molecular Correlations Included

Щекин, А. К.; Gosteva, L. A.

doi:10.1134/s0012501623600092

Cited by 1 publication

(1 citation statement)

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“…We assumed that the exponential approximation (eq ) is valid for the disjoining pressure in the films. Our previous works − show that the disjoining pressure isotherms calculated within the same two versions of DFT are indeed positive and fast descending. This is a well-known result for liquid films covering wettable nucleation cores.…”

Section: Resultsmentioning

confidence: 88%

Confinement Effects in Droplet Formation on a Solid Particle

Shchekin,

Gosteva,

Lebedeva

et al. 2024

Langmuir

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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.

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Section: Resultsmentioning

confidence: 88%