title: Dissipation mechanisms in ionic liquids.
abstract: The spreading of ionic liquids on molecularly smooth solid surfaces has been little studied in the past. We show that the spreading behaviors of the two ionic liquids, [EMIM] ethyl sulfate and ECOENG 500, are well described by the combined molecular kinetic and hydrodynamic model of de Ruijter, de Coninck, and Oshanin [M.J. de Ruijter, J. de Coninck, G. Oshanin, Langmuir 15 (1999) 2209] with reasonable values for the molecular friction coefficient zeta, molecular displacement lambda, and frequency K0 associated with contact line motion, as well as reasonable values for the microscopic cutoff a associated with hydrodynamic dissipation.
authors.affiliation: Department of Physics, Cardwell Hall, Kansas State University, Manhattan, KS 66506-2601, USA.
authors.forename: Erik J
authors.initials: EJ
authors.lastname: Stalcup
authors.forename: Ralf
authors.initials: R
authors.lastname: Seemann
authors.forename: Stephan
authors.initials: S
authors.lastname: Herminghaus
authors.forename: Bruce M
authors.initials: BM
authors.lastname: Law
mesh_terms: D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D007700:Kinetics; D015394:Molecular Structure; D011092:Polyethylene Glycols / Q000737:chemistry*; D013499:Surface Properties; D013816:Thermodynamics; D013997:Time Factors
chemical_list: D007093:Imidazoles; D052578:Ionic Liquids; D011092:Polyethylene Glycols; C518739:1-ethyl-3-methylimidazolium