Sodium-Controlled Interfacial Resistive Switching in Thin Film Niobium Oxide for Neuromorphic Applications.

Benedetta GaggioAtif JanMoritz MullerBarbara SalonikidouBabak BakhitMarkus Hellenbrand Giuliana Di Martino Bilge Yildiz Judith L MacManus-Driscoll

Published in: Chemistry of materials : a publication of the American Chemical Society (2024)

A double layer 2-terminal device is employed to show Na-controlled interfacial resistive switching and neuromorphic behavior. The bilayer is based on interfacing biocompatible NaNbO 3 and Nb 2 O 5 , which allows the reversible uptake of Na + in the Nb 2 O 5 layer. We demonstrate voltage-controlled interfacial barrier tuning via Na + transfer, enabling conductivity modulation and spike-amplitude- and spike-timing-dependent plasticity. The neuromorphic behavior controlled by Na + ion dynamics in biocompatible materials shows potential for future low-power sensing electronics and smart wearables with local processing.

Keyphrases

ionic liquid
molecular dynamics simulations
electron transfer
perovskite solar cells
drug release
risk assessment