Journal ArticleDOI
Experimental investigation of the link between static and dynamic wetting by forced wetting of nylon filament.
TLDR
In this article, the molecular-kinetic theory of wetting (MKT) was used to interpret the dynamic contact angle data and evaluate the contact-line friction ζ0 at the microscopic scale.Abstract:
Forced wetting experiments with various liquids were conducted to study the dynamic wetting properties of nylon filament. The molecular-kinetic theory of wetting (MKT) was used to interpret the dynamic contact angle data and evaluate the contact-line friction ζ0 at the microscopic scale. By taking account of the viscosity of the liquid, ζ0 could be related exponentially to the reversible work of adhesion. This clearly establishes an experimental link between the static and dynamic wetting properties of the material. Moreover, statistical analysis of the equilibrium molecular displacement frequency K0 and the length of the displacements λ reveals that these two fundamental parameters of the MKT are strongly correlated, not only in the linearized form of the theory (valid close to equilibrium) but also when the nonlinear form of the equations has to be considered at higher wetting speeds.read more
Citations
More filters
Journal ArticleDOI
Review of Fluid Slip over Superhydrophobic Surfaces and Its Dependence on the Contact Angle
TL;DR: In this paper, a review of hydrophobicity is presented, with the goal of investigating the relationship, if any, between the contact angle (a macroscopically observed property) and the slip length (a microscopic phenomenon).
Journal ArticleDOI
A Critical Review of Dynamic Wetting by Complex Fluids: From Newtonian Fluids to Non-Newtonian Fluids and Nanofluids
TL;DR: Two nanoparticle dissipation modes, the bulk Dissipation mode and the local dissipation mode, are proposed to resolve the uncertainties related to the various types of dynamic wetting mechanisms reported in the literature.
Journal ArticleDOI
Influence of solid-liquid interactions on dynamic wetting: a molecular dynamics study
TL;DR: Large-scale molecular dynamics simulations of liquid drops spreading on a solid substrate have been carried out for a very wide range of solid-liquid interactions and equilibrium contact angles, and key parameters of the molecular-kinetic theory of dynamic wetting are obtained directly from the simulations with good agreement between the two sources.
Journal ArticleDOI
Dynamics of Wetting from an Experimental Point of View
TL;DR: In this article, the experimental aspects of dynamic wetting, considering extant data for different geometries, are examined for cases that include droplets, fibers, tubes, and plates.
Journal ArticleDOI
Wetting behaviour and surface properties of technical bamboo fibres
C.A. Fuentes,Le Quan Ngoc Tran,Christine C. Dupont-Gillain,Willem Vanderlinden,S. De Feyter,A.W. Van Vuure,Ignace Verpoest +6 more
TL;DR: In this paper, the wetting behavior of technical bamboo fibres is studied experimentally by using the Wilhelmy technique, and the results are modelled using the molecular-kinetic theory.
References
More filters
Journal ArticleDOI
An Analysis of Variance Test for Normality (Complete Samples)
S. S. Shapiro,M. B. Wilk +1 more
TL;DR: In this article, a new statistical procedure for testing a complete sample for normality is introduced, which is obtained by dividing the square of an appropriate linear combination of the sample order statistics by the usual symmetric estimate of variance.
Journal ArticleDOI
Wetting: statics and dynamics
TL;DR: In this paper, the authors present an attempt towards a unified picture with special emphasis on certain features of "dry spreading": (a) the final state of a spreading droplet need not be a monomolecular film; (b) the spreading drop is surrounded by a precursor film, where most of the available free energy is spent; and (c) polymer melts may slip on the solid and belong to a separate dynamical class, conceptually related to the spreading of superfluids.
Journal ArticleDOI
The physics of moving wetting lines
TL;DR: This paper seeks to offer a status report on the current approaches to wetting dynamics, to briefly review each of theCurrent approaches, to illustrate their successes and limitations as revealed by experiment and simulation, and to suggest ways in which the different aspects of wetts dynamics might be investigated in the future.
Journal ArticleDOI
Moving contact lines in liquid/liquid/solid systems
TL;DR: In this paper, the Young equation is used to describe the motion of an interface between immiscible viscous fluids along a smooth homogeneous solid surface in the case of small capillary and Reynolds numbers, and an analytical expression for the dependence of the dynamic contact angle on the contact-line speed and parameters characterizing properties of contacting media is derived.