Visco-capillary response of gas bubbles probed by thermal noise atomic force measurement
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en
Article de revue
Ce document a été publié dans
Langmuir. 2018-01-30, vol. 34, n° 4, p. 1371 - 1375
American Chemical Society
Résumé en anglais
We present thermal noise measurements of a vibrating sphere close to microsized air bubbles in water with an atomic force microscope. The sphere was glued at the end of a cantilever with a resonance frequency of few kHz. ...Lire la suite >
We present thermal noise measurements of a vibrating sphere close to microsized air bubbles in water with an atomic force microscope. The sphere was glued at the end of a cantilever with a resonance frequency of few kHz. The subangstrom thermal motion of the microsphere reveals an elastohydrodynamic coupling between the sphere and the air bubble. The results are in perfect agreement with a model incorporating macroscopic capillarity and fluid flow on the bubble surface with full slip boundary conditions.< Réduire
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