title: No-slip hydrodynamic boundary condition for hydrophilic particles.
abstract: We describe measurement and interpretation of the force acting on a smooth hydrophilic glass particle during rapid (1-100 microm s(-1) approach to, and separation from, a hydrophilic glass plate in viscous concentrated aqueous sucrose solutions (0.001 Pa s<eta<0.090 Pa s). We find that the force is accurately described by Reynolds lubrication theory with a no-slip boundary condition, even at maximum strain rates of up to 250 000 s(-1). Compared to earlier studies of hydrodynamic forces on small particles, we reduce the uncertainty in the absolute particle-plate separation by using an evanescent-wave measurement of the separation.
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Melbourne, Parkville, Victoria 3010, Australia.
authors.forename: Christopher D F
authors.initials: CD
authors.lastname: Honig
authors.forename: William A
authors.initials: WA
authors.lastname: Ducker
mesh_terms: D005898:Glass; D018625:Microscopy, Atomic Force / Q000379:methods; D008956:Models, Chemical; D036103:Nanotechnology / Q000379:methods; D013395:Sucrose / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D013395:Sucrose