Scanning Ion Conductance Microscopy of Nafion-Modified Nanopores Academic Article

abstract

• Single nanopores in silicon nitride membranes are asymmetrically modified with Nafion and investigated with scanning ion conductance microscopy, where Nafion alters local ion concentrations at the nanopore. Effects of applied transmembrane potentials on local ion concentrations are examined, with the Nafion film providing a reservoir of cations in close proximity to the nanopore. Fluidic diodes based on ion concentration polarization are observed in the current-voltage response of the nanopore and in approach curves of SICM nanopipette in the vicinity of the nanopore. Experimental results are supported with finite element method simulations that detail ion depletion and enrichment of the nanopore/Nafion/nanopipette environment.

authors

• Baker, Lane

published proceedings

• JOURNAL OF THE ELECTROCHEMICAL SOCIETY

altmetric score

• 5.9

author list (cited authors)

• Alanis, K., Siwy, Z. S., & Baker, L. A.

citation count

• 1

complete list of authors

• Alanis, Kristen||Siwy, Zuzanna S||Baker, Lane A

publication date

• June 2023

publisher

• The Electrochemical Society  Publisher

published in

• Journal of the Electrochemical Society  Journal

keywords

• 34 Chemical Sciences
• 3406 Physical Chemistry
• 40 Engineering
• Bioengineering
• Nanotechnology

Digital Object Identifier (DOI)

• 10.1149/1945-7111/acdd29

start page

• 066510

end page

• 066510

volume

• 170

issue

• 6

URL

• http://dx.doi.org/10.1149/1945-7111/acdd29