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Surface Roughness and Hydrodynamic Boundary Slip of a Newtonian Fluid in a Completely Wetting System

Bonaccurso, Elmar; Butt, Hans-Juergen; Craig, Vincent


The hydrodynamic drainage force on a borosilicate glass sphere approaching a wall (silicon wafer) perpendicularly in a viscous liquid was measured using an atomic force microscope. The deformation of the microsphere in contact with the substrate was estimated using Johnson-Kendall-Roberts theory to be less than 0.1 nm. Aqueous solutions of sucrose of varying concentration whose temperature has been equilibrated at 20°C before each measurement were used as Newtonian viscous fluids. The...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: Physical Review Letters


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