Diffusive-convective transition in the non-equilibrium charging of an electric double layer. (20th January 2017)

• Record Type: Journal Article
• Authors: Lobaskin, Vladimir; Netz, Roland R.
• Is Part Of: Europhysics letters. Volume 116:Number 5(2016:Dec.)
• Publication Date: 2017-01-20
• Subjects: 82.45.-h -- 66.10.-x -- 66.20.-d; Physics -- Periodicals; Electronic journals; 530.05
• DOI: 10.1209/0295-5075/116/58001
• Languages: English
• ISSNs: 0295-5075

Abstract

Abstract: We study the non-equilibrium electrolyte kinetics in a planar nanocapacitor that is driven by periodically switching surfaces charges using simulations, theory and scaling analysis. The combined effects of inter-ionic charge correlations and hydrodynamic interactions lead to correlated convective behavior for weakly charged ions. These dynamic correlations, signaling the breakdown of the Poisson-Nernst-Planck theory, are distinct from static correlations that are manifested by the crossover from Poisson-Boltzmann to strong-coupling theory that occurs as the ion valency increases.