近期，本课题组张敏老师和王雅茸同学分别以通讯作者和第一作者在纳米材料领域知名期刊Nanoscale上发表了题为“Ultralow-power Flexible Transparent Carbon Nanotube Synaptic Transistors for Emotional Memory”的研究成果。
本工作利用聚乙烯醇(PVA)电解质水凝胶，提出了具有信号传输和情感学习功能的柔性透明碳纳米管突触晶体管，并探究了机理，成功地模拟了生物突触的兴奋性和抑制性突触功能。所实现的晶体管具有低工作电压、快速响应和超低功耗等特点，在低功耗生物系统和人工智能系统中具有很高的应用潜力。该成果发表在纳米科学与技术方向重要国际期刊Nanoscale。
Emulating biological behavior of the human brain with artificial neuromorphic device is essential for the future development of human-machine interactive system, bionic sensing system and intelligent robot. In this paper, the artificial flexible transparent carbon nanotube synaptic transistors (F-CNT-STs) with signal transmission and emotional learning function are realized by adopting the poly(vinyl alcohol) (PVA)/SiO2 proton-conducting electrolyte. Synaptic functions of the biological synapses including excitatory and inhibitory behavior are successfully emulated in the F-CNT-STs. Besides, synaptic plasticity such as spike-duration-dependent plasticity, spike-number-dependent plasticity, spike-amplitude-dependent plasticity, paired-pulse facilitation, short-term plasticity, and long-term plasticity have all been systematically characterized. Moreover, the F-CNT-STs also closely imitate the behavior of human brain learning and emotional memory functions. After 1000 bending cycles at the radius of 3 mm, both the transistor characteristics and the synaptic functions can still be implemented correctly, showing outstanding mechanical capability. The realized F-CNT-STs possess low operating voltage, quick response, and ultra-low power consumption, indicating their high potential to work in the low-power biological systems and artificial intelligence systems. The flexible artificial synapse transistor enables its potential to be generally applicable to various flexible wearable biological and intelligent applications.
文章链接：
https://pubs.rsc.org/en/content/articlelanding/2021/NR/D1NR02099D
