Surface Tension: Mechanics, Thermodynamics, and Relaxation Times
- Authors: Tovbin Y.K.1
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Affiliations:
- Karpov Institute of Physical Chemistry
- Issue: Vol 92, No 6 (2018)
- Pages: 1045-1059
- Section: To the 100Th Anniversary of the Karpov Institute of Physical Chemistry
- URL: https://bakhtiniada.ru/0036-0244/article/view/170019
- DOI: https://doi.org/10.1134/S0036024418060201
- ID: 170019
Cite item
Abstract
A microscopic analysis is presented of the existing definitions of equilibrium surface tension, which can be divided into two types: mechanical and thermodynamic. Each type of definition can be studied from the presentation below according to thermodynamic hypotheses or molecular calculations. An analysis of the planar interface is given and its generalization for curved (spherical) interfaces is considered. The distinction between approaches describing the surface tension of metastable and equilibrium droplets is discussed. Based on nonequilibrium thermodynamics, it is shown that the introduction of metastable droplets is due to a violation of the relationship between the times of impulse and chemical potential relaxation in condensed phases. Problems of calculating the surface tension in nonequilibrium situations are created.
About the authors
Yu. K. Tovbin
Karpov Institute of Physical Chemistry
Author for correspondence.
Email: tovbin@nifhi.ru
Russian Federation, Moscow, 105064
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