Iontronic Neuromorphic Signaling with Conical Microfluidic Memristors

Experiments have shown that the conductance of conical channels, filled with an aqueous electrolyte, can strongly depend on the history of the applied voltage. These channels hence have a memory and are promising elements in brain-inspired (iontronic) circuits. We show here that the memory of such c...

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Vydáno v:Physical review letters Ročník 130; číslo 26; s. 268401
Hlavní autoři: Kamsma, T. M., Boon, W. Q., ter Rele, T., Spitoni, C., van Roij, R.
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States 30.06.2023
Témata:
Action Potentials - physiology
Microfluidics
Neurons
Potassium Channels
Signal Transduction
ISSN:0031-9007, 1079-7114, 1079-7114
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Shrnutí:Experiments have shown that the conductance of conical channels, filled with an aqueous electrolyte, can strongly depend on the history of the applied voltage. These channels hence have a memory and are promising elements in brain-inspired (iontronic) circuits. We show here that the memory of such channels stems from transient concentration polarization over the ionic diffusion time. We derive an analytic approximation for these dynamics which shows good agreement with full finite-element calculations. Using our analytic approximation, we propose an experimentally realizable Hodgkin-Huxley iontronic circuit where micrometer cones take on the role of sodium and potassium channels. Our proposed circuit exhibits key features of neuronal communication such as all-or-none action potentials upon a pulse stimulus and a spike train upon a sustained stimulus.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/PhysRevLett.130.268401