Velocity Profiles of Water Flowing Past Solid Glass Surfaces Using Fluorescent Nanoparticles and Molecules as Velocity Probes
Langue
en
Article de revue
Ce document a été publié dans
Physical Review Letters. 2008-05, vol. 100, n° 21, p. 214502
American Physical Society
Résumé en anglais
Measurements of the velocity profile of water flowing on a glass surface using fluorescent nanoparticles and single fluorescent molecules as velocity probes show that the no slip boundary condition holds down to at least ...Lire la suite >
Measurements of the velocity profile of water flowing on a glass surface using fluorescent nanoparticles and single fluorescent molecules as velocity probes show that the no slip boundary condition holds down to at least 10 nm from the surface. For water flowing on a hydrophobic solid surface, silanized glass, the no slip boundary condition fails, and a slip length of 45 nm is measured. These velocity measurements are complemented with atomic force microscopy measurements of dissipation on a small sphere oscillating near the surface with results in agreement with the velocity profiles.< Réduire
Mots clés en anglais
Laminar flows
Low-Reynolds-number flows
Liquid-solid interfaces
Origine
Importé de halUnités de recherche