Contactless rheology of finite-size air-water interfaces
Langue
en
Article de revue
Ce document a été publié dans
Physical Review Research. 2021, vol. 3, p. L032007
American Physical Society
Résumé en anglais
We present contactless atomic-force microscopy measurements of the hydrodynamic interactions between a rigid sphere and an air bubble in water at the micro-scale. The size of the bubble is found to have a significant effect ...Lire la suite >
We present contactless atomic-force microscopy measurements of the hydrodynamic interactions between a rigid sphere and an air bubble in water at the micro-scale. The size of the bubble is found to have a significant effect on the response due to the long-range capillary deformation of the air-water interface. To rationalize the experimental data, we develop a viscocapillary lubrication model accounting for the finite-size effect. The comparison between experiments and theory allows us to measure the air-water surface tension, without contact, paving the way towards robust contactless tensiometry of polluted air-water interfaces.< Réduire
Project ANR
Electrodynamical diffuse layers - ANR-19-CE30-0012
Mouvement brownien au voisinage d'interfaces molles - ANR-21-ERCC-0010
Mouvement brownien au voisinage d'interfaces molles - ANR-21-ERCC-0010
Origine
Importé de halUnités de recherche