Surface Tension: Mechanics, Thermodynamics, and Relaxation Times


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Аннотация

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.

Авторлар туралы

Yu. Tovbin

Karpov Institute of Physical Chemistry

Хат алмасуға жауапты Автор.
Email: tovbin@nifhi.ru
Ресей, Moscow, 105064

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