Localisation-delocalisation transition of electrolytes between micro-electrodes

A Esztermann, R Messina, H Löwen
2006 Europhysics letters  
Employing computer simulations and Poisson-Boltzmann theory, we show that a symmetric electrolyte in an electric condenser undergoes a localisation-delocalisation transition as a function of the external voltage U . The transition occurs at the critical voltage Uc corresponding to the situation where the surface charge density of the plates equals the area charge density of completely charge-separated electrolytes. The average distance of the electrolyte ions to the plates diverges
more » ... verges logarithmically for U Uc. This transition is expected to be observable in micro-electrodes. c EDP Sciences Article published by EDP Sciences and available at http://www.edpsciences.org/epl or http://dx.
doi:10.1209/epl/i2005-10468-4 fatcat:yrwhw6zkvvbxleoczqfvl4gt64