Experiments On Surface Waves In Thin Wetting Films
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS(1999)
摘要
A new method for excitation and measurement of time stationary, free running waves on wetting films is described. The waves in the frequency range of 10-140 Hz are generated by an oscillating bubble against a quartz plate in a Derjaguin-Scheludko film balance. The results from the experimentally measured dispersion equation are compared with a theoretical model based on the lubrication approximation. It is shown that there are significant discrepancies between experiment and theory which cannot be explained by the classical DLVO-theory as well as by the assumption of a non-slip boundary condition. (C) 1999 Elsevier Science B.V. All rights reserved.
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关键词
thin liquid wetting films,surface waves,dispersion equation,slip condition
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