Home List of Titles Dynamic forces between bubbles and surfaces and hydrodynamic boundary conditions
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/190604
- Dynamic forces between bubbles and surfaces and hydrodynamic boundary conditions
- Manor, Ofer; Vakarelski, Ivan U.; Stevens, Geoffrey W.; Grieser, Franz; Dagastine, Raymond R.; Chan, Derek Y. C.
- A bubble attached to the end of an atomic force microscope cantilever and driven toward or away from a flat mica surface across an aqueous film is used to characterise the dynamic force that arises from hydrodynamic drainage and electrical double layer interactions across the nanometer thick intervening aqueous film. The hydrodynamic response of the air/water interface can range from a classical fully immobile, no-slip surface in the presence of added surfactants to a partially mobile interface in an electrolyte solution without added surfactants. A model that includes the convection and diffusion of trace surface contaminants can account for the observed behavior presented. This model predicts quantitatively different interfacial dynamics to the Navier slip model that can also be used to fit dynamic force data with a post hoc choice of a slip length.
- Publication type
- Journal article
- Langmuir, Vol. 24, no. 20 (Oct 2008), pp. 11533-11543
- Publication year
- FOR Code(s)
- 0306 Physical Chemistry (Incl. Structural); 0904 Chemical Engineering
- AFM; Atomic force microscope; Bubble; Drainage; Navier slip model
- American Chemical Society
- Publisher URL
- Copyright © 2008 American Chemical Society.
- Peer reviewed