Memristive Characteristics in an Asymmetrically Charged Nanochannel

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(26), P. 6852 - 6858

Published: June 25, 2024

The emergent nanofluidic memristor provides a promising way of emulating neuromorphic functions in the brain. conical-shaped nanopore showed features for memristor, inspiring us to investigate memory effects asymmetrically charged nanochannels due their high current rectification, which may result good effects. Here, an channel were numerically simulated by Poisson–Nernst–Planck equations. Our results that I–V curves represented diode low scanning frequency and then became finally resistor as increased. We successfully replicated learning behavior our system with history-dependent ion redistribution nanochannel. Some critical factors quantitatively analyzed including voltage amplitude, optimal frequency, Dukhin number. Experimental characterizations also carried out. findings are useful design memristors principle enrichment depletion well determination best settings.

Language: Английский

Ultrasensitive Flexible Organic Synaptic Transistors Modulated by a Chemically Cross-Linked Solvent-Resistive Ion Composite

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(44), P. 11139 - 11147

Published: Oct. 31, 2024

We demonstrate a flexible organic synaptic transistor (FOST) with an ion-composite electrolyte film resistant to chemical reagents, which uses three-dimensionally cross-linked polyimide matrix accommodate high-concentration ionic liquid. FOST shows versatile plasticity for classical conditioning, high-pass filtering, and the learning–forgetting process. The device achieves low-energy consumption down 1.02 femtojoule per event ultrasensitive impulse presynaptic spike 0.5 mV. Moreover, electrical performance of is still stable after 1000 mechanical bending cycles. These results that can be applied future neuromorphic electronics.

Language: Английский