In a ground-breaking study published in Nature Communications, scientists from the National Graphene Institute, Photon Science Institute and the Department of Physics and Astronomy have demonstrated how two-dimensional (2D) nanochannels can be tuned to exhibit all four theoretically predicted types of memristive behaviour, something never before achieved in a single device. This study not only reveals new insights into ionic memory mechanisms but also has the potential to enable emerging applications in low-power ionic logic, neuromorphic components, and adaptive chemical sensing.
Memristors, or memory resistors, are components that adjust their resistance based on past electrical activity, effectively storing a memory of it. While most existing memristors are solid-state devices that rely on electron movement, the team, led by Prof Radha Boya, used confined liquid electrolytes within thin nanochannels made from 2D materials like MoS₂ and hBN. This nanofluidic approach allows for ultra-low energy operation and the ability to emulate biological learning processes.
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