2024-03-28T13:53:40Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/701122022-11-17T02:08:08Zhdl_2115_64361hdl_2115_64360van der Waals interaction between a moving nano-cylinder and a liquid thin filmLedesma-Alonso, RenéRaphaël, ElieSalez, ThomasTordjeman, PhilippeLegendre, Dominiqueopen access428We 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.Royal Society of Chemistry2017-05-03engjournal articleAMhttp://hdl.handle.net/2115/70112https://doi.org/10.1039/C7SM00467B1744-683X1744-6848Soft Matter132038223830https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/70112/3/1612.02409.pdfapplication/pdf1.31 MB2017-05-03