Back to Search Start Over

Extended space charge near non-ideally selective membranes and nanochannels

Extended space charge near non-ideally selective membranes and nanochannels

Authors :
Schiffbauer, Jarrod
Leibowitz, Neta
Yossifon, Gilad
Publication Year :
2015

Abstract

We demonstrate the role of selectivity variation in the structure of the non-equilibrium extended space-charge using 1D analytic and 2D numerical Poisson-Nernst-Planck models for the electro- diffusive transport of a symmetric electrolyte. This provides a deeper understanding of the underly- ing mechanism behind a previously-observed maximum in the resistance-voltage curve for a shallow micro-nanochannel interface device [Schiffbauer, Liel, Leibowitz, Park, and Yossifon, submitted to Phys. Rev. E.]. The current study helps to establish a connection between parameters such as the geometry and nanochannel surface-charge and the control of selectivity and resistance in the over-limiting current regime.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....bd0e8a34a89b1cc48f52b388d57e30a3