title: Excluded volume effect and orientational ordering near charged surface in solution of ions and Langevin dipoles.
abstract: The influence of a finite volume of ions and orientational ordering of water Langevin dipoles on the dielectric permittivity profile in the vicinity of charged surface is studied theoretically via a numerical solution of the modified Poisson-Boltzmann equation. It is shown that the dielectric permittivity profile close to the charged surface is mainly determined by two mechanisms; specifically, the depletion of dipoles at the charged surface due to accumulated counterions and the increased orientational ordering of the water dipoles.
authors.affiliation: Laboratory of Biophysics, Faculty of Electrical Engineering, University of Ljubljana, Trzaska 25, SI-1000 Ljubljana, Slovenia. ales.iglic@fe.uni-lj.si
authors.forename: Ales
authors.initials: A
authors.lastname: Iglic
authors.forename: Ekaterina
authors.initials: E
authors.lastname: Gongadze
authors.forename: Klemen
authors.initials: K
authors.lastname: Bohinc
mesh_terms: D000465:Algorithms; D004563:Electrochemistry; D004573:Electrolytes / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D008956:Models, Chemical; D016012:Poisson Distribution; D012996:Solutions / Q000737:chemistry; D055672:Static Electricity; D014867:Water / Q000737:chemistry*
chemical_list: D004573:Electrolytes; D007477:Ions; D012996:Solutions; D014867:Water