Chemically configurable analogue memristors, <i>via</i> the chemiresistive response of oxidized MXene
Somnath S. Kundale, Muhammad Abubakr, Jihye Park, Jihye Park, Fernando Ordonez Morales, I Ketut Gary Devara, Windy Ayu Lestari, Riya Chatterjee, Sang Yong Nam, Jun Hong Park, Jun Hong Park
Abstract
gas adsorption on its surface. This dual electrical and molecular tuning yields distinctly separable conductance states, essential for emulating artificial synaptic functions. The device exhibits clear analogue resistive switching and both volatile and non-volatile memory behaviors under electrical and molecular stimuli, indicative of reliable synaptic plasticity. Moreover, gas exposure induces electrical potentiation and depression of conductance states, replicating key features of olfactory synaptic behavior. Its dynamic response to gas pulses, long-term retention, and pulse-dependent plasticity highlight its ability to store and process environmental chemical stimuli in real time. To validate its neuromorphic computing capability, an artificial neural network (ANN) was implemented using the digit-MNIST and fashion-MNIST datasets, achieving recognition accuracies of 95% and 82%, respectively. These results confirm the potential for integrated sensing and computation on a single platform.