https://hal-ens-lyon.archives-ouvertes.fr/ensl-01639815Steinberger, AudreyAudreySteinbergerPhys-ENS - Laboratoire de Physique de l'ENS Lyon - ENS Lyon - École normale supérieure - Lyon - UCBL - Université Claude Bernard Lyon 1 - Université de Lyon - CNRS - Centre National de la Recherche ScientifiqueKosgodagan Acharige, SebastienSebastienKosgodagan AcharigePhys-ENS - Laboratoire de Physique de l'ENS Lyon - ENS Lyon - École normale supérieure - Lyon - UCBL - Université Claude Bernard Lyon 1 - Université de Lyon - CNRS - Centre National de la Recherche ScientifiqueLaurent, JustineJustineLaurentPhys-ENS - Laboratoire de Physique de l'ENS Lyon - ENS Lyon - École normale supérieure - Lyon - UCBL - Université Claude Bernard Lyon 1 - Université de Lyon - CNRS - Centre National de la Recherche ScientifiqueCapillary force on a tilted cylinder: Atomic Force Microscope (AFM) measurementsHAL CCSD2017Asymmetry Atomic Force Microscope Capillary force Cylinder Force measurement Liquid meniscus Tilt Torque correction Wetting[PHYS.COND.CM-SCM] Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]Steinberger, AudreyBlanc 2013 - Nano dynamique des fluides - - NANOFLUIDYN2013 - ANR-13-BS10-0009 - Blanc 2013 - VALID - Out of Equilibrium Fluctuations in Confined Phase Transitions - OUTEFLUCOP - - EC:FP7:ERC2011-03-01 - 2016-12-31 - 267687 - VALID - 2017-11-20 16:08:282023-03-24 14:53:052017-11-20 16:08:28enJournal articles10.1016/j.jcis.2017.06.0951HYPOTHESIS:The capillary force in situations where the liquid meniscus is asymmetric, such as the one around a tilted object, has been hitherto barely investigated even though these situations are very common in practice. In particular, the capillary force exerted on a tilted object may depend on the dipping angle i.EXPERIMENTS:We investigate experimentally the capillary force that applies on a tilted cylinder as a function of its dipping angle i, using a home-built tilting Atomic Force Microscope (AFM) with custom made probes. A micrometric-size rod is glued at the end of an AFM cantilever of known stiffness, whose deflection is measured when the cylindrical probe is dipped in and retracted from reference liquids.FINDINGS:We show that a torque correction is necessary to understand the measured deflection. We give the explicit expression of this correction as a function of the probes' geometrical parameters, so that its magnitude can be readily evaluated. The results are compatible with a vertical capillary force varying as 1/cosi, in agreement with a recent theoretical prediction. Finally, we discuss the accuracy of the method for measuring the surface tension times the cosine of the contact angle of the liquid on the probe.