Surface tension and contact angles: Molecular origins and associated microstructure
Abstract
Gradient theory converts the molecular theory of inhomogeneous fluid into nonlinear boundary value problems for density and stress distributions in fluid interfaces, contact line regions, nuclei and microdroplets, and other fluid microstructures. The relationship between the basic patterns of fluid phase behavior and the occurrence and stability of fluid microstructures was clearly established by the theory. All the inputs of the theory have molecular expressions which are computable from simple models. On another level, the theory becomes a phenomenological framework in which the equation of state of homogeneous fluid and sets of influence parameters of inhomogeneous fluids are the inputs and the structures, stress tensions and contact angles of menisci are the outputs. These outputs, which find applications in the science and technology of drops and bubbles, are discussed.
 Publication:

2d International Colloquium on Drops and Bubbles
 Pub Date:
 March 1982
 Bibcode:
 1982drbu.coll..129D
 Keywords:

 Bubbles;
 Drops (Liquids);
 Fluid Dynamics;
 Interfacial Tension;
 LiquidLiquid Interfaces;
 LiquidVapor Interfaces;
 Molecular Structure;
 Thin Films;
 Density Distribution;
 Equilibrium Equations;
 Inhomogeneity;
 Liquid Surfaces;
 Mathematical Models;
 Microstructure;
 Phase Diagrams;
 Planar Structures;
 Pressure Distribution;
 Scaling Laws;
 Stress Distribution;
 Thermodynamics;
 Fluid Mechanics and Heat Transfer