On the Dynamical Regimes of Pattern-Accelerated Electroconvection.

ABSTRACT: Recent research has established that electroconvection can enhance ion transport at polarized surfaces such as membranes and electrodes where it would otherwise be limited by diffusion. The onset of such overlimiting transport can be influenced by the surface topology of the ion selective membranes as well as inhomogeneities in their electrochemical properties. However, there is little knowledge regarding the mechanisms through which these surface variations promote transport. We use high-resolution direct numerical simulations to develop a comprehensive analysis of electroconvective flows generated by geometric patterns of impermeable stripes and investigate their potential to regularize electrokinetic instabilities. Counterintuitively, we find that reducing the permeable area of an ion e

SUBMITTER: Davidson SM 

PROVIDER: S-EPMC4776150 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature