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Journal Articles Langmuir Year : 2018

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.
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hal-01696874 , version 1 (31-01-2018)

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Yuliang Wang, Binglin Zeng, Hadush Tedros Alem, Zaicheng Zhang, Elisabeth Charlaix, et al.. Visco-capillary response of gas bubbles probed by thermal noise atomic force measurement. Langmuir, 2018, 34 (4), pp.1371 - 1375. ⟨10.1021/acs.langmuir.7b03857⟩. ⟨hal-01696874⟩
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