While most neuromorphic systems are based on nanoscale electronic devices, nature relies on ions for energy-efficient information processing. Therefore, finding memristive nanofluidic devices is a milestone toward realizing electrolytic computers mimicking the brain down to its basic principles of operation. Here, we present a nanofluidic device designed for circuit scale in-memory processing that combines single-digit nanometric confinement and large entrance asymmetry. Our fabrication process is scalable while the device operates at the second timescale with a conductance ratio in the range 10-60. In-operando optical microscopy unveils the origin of memory, arising from the reversible formation of liquid blisters modulating the device conductance. The combination of features of these mechano-ionic memristive switches permits assembling logic circuits composed of two interactive devices and an ohmic resistor. These results open the way to design multi-component ionic machinery, such as nanofluidic neural networks, and implementing brain-inspired ionic computations.
@article{arxiv.2306.07617,
title = {Nanofluidic logic with mechano-ionic memristive switches},
author = {Theo Emmerich and Yunfei Teng and Nathan Ronceray and Edoardo Lopriore and Riccardo Chiesa and Andrey Chernev and Vasily Artemov and Massimiliano Di Ventra and Andras Kis and Aleksandra Radenovic},
journal= {arXiv preprint arXiv:2306.07617},
year = {2023}
}