Fiber-Shaped Cu-Ion Diffusive Memristor for Neuromorphic Computing

Fiber-shaped memristors have attracted enormous attention as potential wearable electronics. Here, a Cu-ion diffusive memristor with fiber shape was proposed for artificial synapse and neuromorphic computing. The fiber-shaped diffusive memristor exhibits gradual conductance modulation characteristics under consecutive voltage sweeps. Typical synaptic plasticity including EPSC, PPF, PPD, LTP/LTD and learning behaviors were all successfully achieved by the memristor. The active Cu $^{{2}+}$ of diffusive memristor was similar as Ca $^{{2}+}$ diffusion in biological synapse, which is the basis of realizing the functions of synaptic plasticity. The fiber-shaped Cu $^{{2}+}$ diffusive memristor acting as artificial synapse paves the way for next-generation wearable neuromorphic computing system.