title: Particle tracking around surface nanobubbles.
abstract: The exceptionally long lifetime of surface nanobubbles remains one of the biggest questions in the field. One of the proposed mechanisms for producing the stability is the dynamic equilibrium model, which describes a constant flux of gas in and out of the bubble. Here, we describe results from particle tracking experiments carried out to measure this flow. The results are analysed by measuring the Voronoï cell size distribution, the diffusion, and the speed of the tracer particles. We show that there is no detectable difference in the movement of particles above nanobubble-laden surfaces as compared to ones above nanobubble-free surfaces.
authors.affiliation: Physics of Fluids, MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands. e.dietrich@utwente.nl
authors.forename: Erik
authors.initials: E
authors.lastname: Dietrich
authors.forename: Harold J W
authors.initials: HJ
authors.lastname: Zandvliet
authors.forename: Detlef
authors.initials: D
authors.lastname: Lohse
authors.forename: James R T
authors.initials: JR
authors.lastname: Seddon
mesh_terms: D000431:Ethanol / Q000737:chemistry; D005740:Gases / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D007091:Image Processing, Computer-Assisted; D045423:Microbubbles; D018625:Microscopy, Atomic Force; D008956:Models, Chemical; D053758:Nanoparticles; D011137:Polystyrenes / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D005740:Gases; D011137:Polystyrenes; D000431:Ethanol; D006108:Graphite; D012825:Silicon