Huber, PatrickPatrickHuberSoprunyuk, ViktorViktorSoprunyukEmbs, Jan P.Jan P.EmbsWagner, ChristianChristianWagnerDeutsch, MosheMosheDeutschKumar, SatishSatishKumar2022-06-072022-06-072005-04-08Physical Review Letters 94 (18): 184504 (2005-04-08)http://hdl.handle.net/11420/12825Faraday surface instability measurements of the critical acceleration, ac, and wavenumber, kc, for standing surface waves on a tetracosanol (C₂4H₅0) melt exhibit abrupt changes at Ts=54degC above the bulk freezing temperature. The measured variations of ac and kc vs. temperature and driving frequency are accounted for quantitatively by a hydrodynamic model, revealing a change from a free-slip surface flow, generic for a free liquid surface (T>Ts), to a surface-pinned, no-slip flow, characteristic of a flow near a wetted solid wall (T < Ts). The change at Ts is traced to the onset of surface freezing, where the steep velocity gradient in the surface-pinned flow significantly increases the viscous dissipation near the surface.en1079-7114200518American Physical SocietyPhysics - Fluid DynamicsPhysics - Fluid DynamicsPhysikJournal Article10.1103/PhysRevLett.94.1845040504056v1Other