Nanogenerator-induced synaptic plasticity and metaplasticity of bio-realistic artificial synapses

Bio-realistic flexible artificial synapses integrated with a nanogenerator were demonstrated for self-powered neuromorphic biomedical device applications. Biocompatible (Na0.5K0.5)NbO3 (NKN) was used in both memristors as an artificial synapse and a nanogenerator. Biological synaptic functions were produced in the NKN memristor driven by the NKN nanogenerator. Finally, metaplasticity was implemented in the integrated devices to facilitate bio-realistic functions in the artificial synapse.