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Concentration polarization effect at the deposition of charged Langmuir monolayers
journal contributionposted on 2011-12-16, 11:35 authored by V.I. Kovalchuk, E.K. Zholkovskiy, M.P. Bondarenko, Victor Starov, D. Vollhardt
The review summarizes the results of the recent studies of the electrokinetic relaxation process within the meniscus region during the deposition of charged Langmuir monolayers. Such electrokinetic relaxation is the consequence of the initial misbalance of partial ion fluxes within a small region near the contact line, where the diffuse parts of electric double layers, formed at the monolayer and the substrate surface, overlap. The concentration polarization within the solution near the three-phase contact line should lead to long-term relaxations of the meniscus after beginning and stopping the deposition process, to changes of the ionic composition within the deposited films, to change of the interaction of the monolayer with the substrate, and to dependence of the maximum deposition rate on the subphase composition.
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