منابع مشابه
Hydrodynamic theory of forced dewetting.
A prototypical problem in the study of wetting phenomena is that of a solid plunging into or being withdrawn from a liquid bath. In the latter, dewetting case, a critical speed exists above which a three-phase contact line is no longer sustainable and the solid can no longer remain dry. Instead, a liquid film is being deposited on the solid. Demonstrating this transition from a dry to a wetted ...
متن کاملForced Wetting and Hydrodynamic Assist
Introduction It is well known that air entrainment sets the ultimate limit to coating speeds. It is also known that air entrainment can be postponed to higher line speeds by manipulating coating flows to generate what has been termed ‘hydrodynamic assist’ [1]. There is increasing evidence that the benefit is associated with geometric or hydrodynamic confinement of the moving contact line [1-3]....
متن کاملComprehensive Analysis of Dewetting Profiles to Quantify Hydrodynamic Slip
1 Department of Experimental Physics, Saarland University, D-66123 Saarbruecken, Germany. [email protected] 2 Present address: Ian Wark Research Institute, University of South Australia, Mawson Lakes SA 5095, Australia. 3 School of Mathematical Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK. 4 Weierstrass Institute for Applied Analysis and Stochast...
متن کاملQuantifying hydrodynamic slip: a comprehensive analysis of dewetting profiles.
To characterize nontrivial boundary conditions of a liquid flowing past a solid, the slip length is commonly used as a measure. From the profile of a retracting liquid front (e.g., measured with atomic force microscopy), the slip length can be extracted with the help of a Stokes model for a thin liquid film dewetting from a solid substrate. Specifically, we use a lubrication model derived from ...
متن کاملDirectional motion of forced polymer chains with hydrodynamic interaction.
We study the propulsion of a one-dimensional (1D) polymer chain under sinusoidal external forces in the overdamped (low Reynolds number) regime. We show that, when hydrodynamical interactions are included, the polymer presents directional motion which depends on the phase differences of the external force applied along the chain. Moreover, the velocity shows a maximum as a function of the frequ...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2004
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.93.094502