WANG, Yuliang; ZENG, Binglin; ALEM, Hadush Tedros; ZHANG, Zaicheng; CHARLAIX, Elisabeth; MAALI, Abdelhamid

doi:10.1021/acs.langmuir.7b03857

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WANG, Yuliang
School of Mechanical Engineering and Automation

ZENG, Binglin
School of Mechanical Engineering and Automation

ALEM, Hadush Tedros
School of Mechanical Engineering and Automation

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Langmuir. 2018-01-30, vol. 34, n° 4, p. 1371 - 1375

American Chemical Society

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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.< Leer menos

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Visco-capillary response of gas bubbles probed by thermal noise atomic force measurement

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