Effect of Electrolyte Concentration and Pore Size on Ion Current Rectification Inversion.

ABSTRACT: A thorough understanding of nanoscale transport properties is vital for the development and optimization of nanopore sensors. The thickness of the electrical double layers (EDLs) at the internal walls of a nanopore, as well as the dimensions of the nanopore itself, plays a crucial role in determining transport properties. Herein, we demonstrate the effect of the electrolyte concentration, which is inversely proportional to the EDL thickness, and the effect of pore size, which controls the extent of the electrical double layer overlap, on the ion current rectification phenomenon observed for conical nanopores. Experimental and numerical results showed that as the electrolyte concentration is decreased, the rectification ratio reaches a maximum, then decreases, and eventually inverts below u

SUBMITTER: Duleba D 

PROVIDER: S-EPMC9204821 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature