From Ion Current to Electroosmotic Flow Rectification in Asymmetric Nanopore Membranes.

ABSTRACT: Asymmetrically shaped nanopores have been shown to rectify the ionic current flowing through pores in a fashion similar to a p-n junction in a solid-state diode. Such asymmetric nanopores include conical pores in polymeric membranes and pyramidal pores in mica membranes. We review here both theoretical and experimental aspects of this ion current rectification phenomenon. A simple intuitive model for rectification, stemming from previously published more quantitative models, is discussed. We also review experimental results on controlling the extent and sign of rectification. It was shown that ion current rectification produces a related rectification of electroosmotic flow (EOF) through asymmetric pore membranes. We review results that show how to measure and modulate this EOF rectificati

SUBMITTER: Experton J 

PROVIDER: S-EPMC5746935 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature