title: Temperature effects on the electrohydrodynamic and electrokinetic behaviour of ion-selective nanochannels.
abstract: A non-isothermal formulation of the Poisson-Nernst-Planck with Navier-Stokes equations is used to study the influence of heating effects in the form of Joule heating and viscous dissipation and imposed temperature gradients on a microchannel/nanochannel system. The system is solved numerically under various cases in order to determine the influence of temperature-related effects on ion-selectivity, flux and fluid flow profiles, as well as coupling between these phenomena. It is demonstrated that for a larger reservoir system, the effects of Joule heating and viscous dissipation only become relevant for higher salt concentrations and electric field strengths than are compatible with ion-selectivity due to Debye layer overlap. More interestingly, it is shown that using different temperature reservoirs can have a strong influence on ion-selectivity, as well as the induced electrohydrodynamic flows.
authors.affiliation: Soft Matter, Fluidics and Interfaces, Mesa+Institute for Nanotechnology, University of Twente, 7500AE Enschede, The Netherlands.
authors.forename: Jeffery A
authors.initials: JA
authors.lastname: Wood
authors.forename: Anne M
authors.initials: AM
authors.lastname: Benneker
authors.forename: Rob G H
authors.initials: RG
authors.lastname: Lammertink