Issue 47, 2019

Ionic circuitry with nanofluidic diodes

Abstract

Ionic circuits composed of nanopores functionalized with polyelectrolyte chains can operate in aqueous solutions, thus allowing the control of electrical signals and information processing in physiological environments. We demonstrate experimentally and theoretically that different orientations of single-pore membranes with the same and opposite surface charges can operate reliably in series, parallel, and mixed series–parallel arrangements of two, three, and four nanofluidic diodes using schemes similar to those of solid-state electronics. We consider also different experimental procedures to externally tune the fixed charges of the molecular chains functionalized on the pore surface, showing that single-pore membranes can be used efficiently in ionic circuitry with distinct ionic environments.

Graphical abstract: Ionic circuitry with nanofluidic diodes

Article information

Article type
Paper
Submitted
14 Aug 2019
Accepted
25 Oct 2019
First published
25 Oct 2019

Soft Matter, 2019,15, 9682-9689

Ionic circuitry with nanofluidic diodes

M. Ali, P. Ramirez, S. Nasir, J. Cervera, S. Mafe and W. Ensinger, Soft Matter, 2019, 15, 9682 DOI: 10.1039/C9SM01654F

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