D ec 1 99 8 Quantitative study of laterally inhomogeneous wetting films
نویسندگان
چکیده
Based on a microscopic density functional theory we calculate the internal structure of the three-phase contact line between liquid, vapor, and a confining wall as well as the morphology of liquid wetting films on a substrate exhibiting a chemical step. We present a refined numerical analysis of the non-local density functional which describes the interface morphologies and the corresponding line tensions. These results are compared with those predicted by a more simple phenomenological interface displacement model. Except for the case that the interface exhibits large curvatures, we find that the interface displacement model provides a quantitatively reliable description of the interfacial structures.
منابع مشابه
ar X iv : g r - qc / 9 21 20 13 v 1 2 1 D ec 1 99 2 Inhomogeneous and anisotropic cosmologies
متن کامل
ar X iv : c on d - m at / 9 60 71 43 v 1 2 1 Ju l 1 99 6 Spreading of molecularly thin wetting films on solid interfaces
In this paper we study kinetics of spreading of thin liquid films on solid interfaces. We present an overview of current experimental picture and discuss available theoretical approaches and their limitations. We report some new experimental results on spreading of molecularly thin liquid films and propose an analytically solvable microscopic model, which reproduces experimentally observed beha...
متن کاملar X iv : g r - qc / 9 81 20 69 v 1 1 8 D ec 1 99 8 G 1 Cosmologies with Gravitational and Scalar Waves
I present here a new algorithm to generate families of inhomogeneous mass-less scalar field cosmologies. New spacetimes, having a single isometry, are generated by breaking the homogeneity of massless scalar field G 2 models along one direction. As an illustration of the technique I construct cosmo-logical models which in their late time limit represent perturbations in the form of gravitationa...
متن کاملFlow of thin films on patterned surfaces
We present fully nonlinear time-dependent simulations of the gravity driven flow of thin wetting liquid films. The computations of the flow down a homogeneous substrate show that the contact line where liquid, solid, and gas phase meet becomes unstable and develops patterns. These computations are extended to inhomogeneous surfaces, and show that inhomogeneity can induce instability of the flui...
متن کاملD ec 1 99 9 Optical second harmonic generation probe of two - dimensional ferroelectricity
Optical second harmonic generation (SHG) is used as a noninvasive probe of two-dimensional (2D) ferroelectricity in Langmuir-Blodgett (LB) films of copolymer vinylidene fluoride with trifluorethylene. The surface 2D ferroelectric-paraelectric phase transition in the topmost layer of LB films and a thickness independent (almost 2D) transition in the bulk of these films are observed in temperatur...
متن کامل