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

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Title: van der Waals interaction between a moving nano-cylinder and a liquid thin film
Authors: Ledesma-Alonso, René Browse this author
Raphaël, Elie Browse this author
Salez, Thomas Browse this author
Tordjeman, Philippe Browse this author
Legendre, Dominique Browse this author
Issue Date: 3-May-2017
Publisher: Royal Society of Chemistry
Journal Title: Soft Matter
Volume: 13
Issue: 20
Start Page: 3822
End Page: 3830
Publisher DOI: 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.
Type: article (author version)
Appears in Collections:国際連携研究教育局 : GI-CoRE (Global Institution for Collaborative Research and Education : GI-CoRE) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)


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