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Van der Waals interaction between a moving nano-cylinder and a liquid thin film

Ledesma Alonso, René and raphael, Elie and salez, Thomas and Tordjeman, Philippe and Legendre, Dominique Van der Waals interaction between a moving nano-cylinder and a liquid thin film. (2017) Soft Matter (20). 3822-3830. ISSN 1744-683X

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Official URL: http://dx.doi.org/10.1039/c7sm00467b

Abstract

We study the static and dynamic interaction between a horizontal cylindrical nano-probe and a thin liquid film. The effects of the physical and geometrical parameters, with a special focus on the film thickness, the probe speed, and the distance between the probe and the free surface are analyzed. Deformation profiles have been computed numerically from a Reynolds lubrication equation, coupled to a modified Young–Laplace equation, which takes into account the probe/liquid and the liquid/substrate non-retarded van der Waals interactions. We have found that the film thickness and the probe speed have a significant effect on the threshold separation distance below which the jump-to-contact instability is triggered. These results encourage the use of horizontal cylindrical nano-probes to scan thin liquid films, in order to determine either the physical or geometrical properties of the latter, through the measurement of interaction forces.

Item Type:Article
Additional Information:Thanks to Royal Society of Chemistry editor. The original PDF of the article can be found at Soft Matter website : http://pubs.rsc.org/en/content/articlelanding/2017/sm/c7sm00467b#!divAbstract
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Ecole supérieure de physique et de chimie industrielles ParisTech - ESPCI (FRANCE)
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Deposited On:30 Mar 2018 10:30

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