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 MoSâ‚‚ and hBN. This nanofluidic approach allows for ultra-low energy operation and the ability to emulate biological learning processes.
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