Visco-capillary response of gas bubbles probed by thermal noise atomic force measurement
Abstract
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.
| Origin | Files produced by the author(s) |
|---|---|
| Comment | En vertu de la Loi pour une République Numérique, l'embargo imposé par l'éditeur sur le post-print est réduit à 6 mois à compter de la publication en ligne |
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