Ionic Transport in Microhole Fluidic Diodes Based on Asymmetric Ionomer Film Deposits

Klaus Mathwig; Barak D.B. Aaronson; Frank Marken

doi:10.1002/celc.201700464

Ionic Transport in Microhole Fluidic Diodes Based on Asymmetric Ionomer Film Deposits

Klaus Mathwig, Barak D.B. Aaronson, Frank Marken

Research output: Contribution to journal › Article › peer-review

35 Citations (SciVal)

Abstract

Microhole fluidic ionic diodes based on asymmetric deposits of charged ionomer membranes (e. g. Nafion or polymers of intrinsic microporosity) on microhole supports yield high rectification ratios for ionic transport. They are fabricated without the need for complex micro- or nanostructuring, and show potential for future applications in desalination and biosensing. Here, we propose an explanation for the functional principle for this type of materials-based ionic diode. A predictive computational model for ionic diode switching is based on finite element analysis. It is employed to determine the influence of diode geometry as well as type and concentration of aqueous electrolyte on the rectification behavior.

Original language	English
Pages (from-to)	897-901
Number of pages	5
Journal	ChemElectroChem
Volume	5
Issue number	6
Early online date	19 Jul 2017
DOIs	https://doi.org/10.1002/celc.201700464
Publication status	Published - 25 Mar 2018

Keywords

desalination
fluidic diode
iontronics
Poisson-Nernst-Planck

ASJC Scopus subject areas

Catalysis
Electrochemistry

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10.1002/celc.201700464

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abstract = "Microhole fluidic ionic diodes based on asymmetric deposits of charged ionomer membranes (e. g. Nafion or polymers of intrinsic microporosity) on microhole supports yield high rectification ratios for ionic transport. They are fabricated without the need for complex micro- or nanostructuring, and show potential for future applications in desalination and biosensing. Here, we propose an explanation for the functional principle for this type of materials-based ionic diode. A predictive computational model for ionic diode switching is based on finite element analysis. It is employed to determine the influence of diode geometry as well as type and concentration of aqueous electrolyte on the rectification behavior.",

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KW - fluidic diode

KW - iontronics

KW - Poisson-Nernst-Planck

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Ionic Transport in Microhole Fluidic Diodes Based on Asymmetric Ionomer Film Deposits

Abstract

Keywords

ASJC Scopus subject areas

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