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Title: ‘Soft’ amplifier circuits based on field-effect ionic transistors

Journal Article · · Soft Matter
DOI:https://doi.org/10.1039/c5sm00573f· OSTI ID:1385927
 [1];  [1]
  1. Northwestern Univ., Evanston, IL (United States)

Soft materials can be used as the building blocks for electronic devices with extraordinary properties. We introduce a theoretical model for a field-effect transistor in which ions are the gated species instead of electrons. Our model incorporates readily-available soft materials, such as conductive porous membranes and polymer-electrolytes to represent a device that regulates ion currents and can be integrated as a component in larger circuits. By means of Nernst–Planck numerical simulations as well as an analytical description of the steady-state current we find that the responses of the system to various input voltages can be categorized into ohmic, sub-threshold, and active modes. This is fully analogous to what is known for the electronic field-effect transistor (FET). Pivotal FET properties such as the threshold voltage and the transconductance crucially depend on the half-cell redox potentials of the source and drain electrodes as well as on the polyelectrolyte charge density and the gate material work function. We confirm the analogy with the electronic FETs through numerical simulations of elementary amplifier circuits in which we successfully substitute the electronic transistor by an ionic transistor.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Bio-Inspired Energy Science (CBES)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0000989
OSTI ID:
1385927
Journal Information:
Soft Matter, Vol. 11, Issue 24; Related Information: CBES partners with Northwestern University (lead); Harvard University; New York University; Pennsylvania State University; University of Michigan; University of Pittsburgh; ISSN 1744-683X
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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Exploring the potential of ionic bipolar diodes for chemical neural interfaces journal January 2017
Overcoming transport limitations in miniaturized electrophoretic delivery devices journal January 2019
Dramatic pressure-sensitive ion conduction in conical nanopores journal April 2018
Processes associated with ionic current rectification at a 2D-titanate nanosheet deposit on a microhole poly (ethylene terephthalate) substrate text January 2020
Dramatic pressure-sensitive ion conduction in conical nanopores text January 2020