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2.Neurosynaptic device

2.1 Ultralow-power Flexible Transparent Carbon Nanotube Synaptic Transistors

Using brain-like neuromorphological devices to simulate the biological behavior of human brain is of great significance to the development of human-computer interaction system, bionic sensing system and intelligent robot in the future. A flexible transparent carbon nanotube synaptic transistor (F-CNT-ST) with the functions of signal transmission and emotional memory was realized by using polyvinyl alcohol (PVA) and silicon dioxide (SiO2) as the mixed dielectric layer. The result shows that F-CNT-ST can simulate the excitatory and inhibitory behavior of biological synapses. The research group systematically studied synaptic plasticity, including pulse time-dependent plasticity, pulse number dependent plasticity, pulse amplitude dependent plasticity, paired pulse facilitation, short-term plasticity and long-term plasticity. The synaptic transistor has the characteristics of low working voltage, ultra-low power consumption and fast response speed. It has high application potential in low-power biological systems and artificial intelligence systems.