神经形态工程学
峰值时间相关塑性
材料科学
联想学习
晶体管
突触可塑性
人工神经网络
计算机科学
人工智能
赫比理论
纳米技术
神经科学
电压
化学
电气工程
心理学
工程类
受体
生物化学
作者
Fei Yu,Li Zhu,Hui Xiao,Wei Gao,Yan Guo
标识
DOI:10.1002/adfm.201804025
摘要
Abstract In neural system, both spike‐timing‐dependent plasticity (STDP) and conditioned reflex are vital synaptic learning mechanisms to regulate advanced neural activities, being associated with temporally coupled stimuli. Thus, realization of STDP and conditioned reflex on a single solid‐state device may open up new opportunities for neuromorphic engineering. Here, restickable chitosan‐gated oxide neuromorphic transistors are fabricated on polyimide tape. Based on protonic electrochemical doping/de‐doping processes at indium‐tin‐oxide/chitosan interfaces, four types of STDP learning rules are successfully demonstrated, including Hebbian STDP, anti‐Hebbian STDP, symmetrical STDP, and visual STDP. Trained with Hebbian STDP, Pavlovian associative learning and extinction behaviors are demonstrated successfully on a single‐oxide neuromorphic transistor. No complex device circuits are needed. It is interesting to note here that the devices can be pasted on different holders with different curvature radii without degrading the transistor performances and STDP learning rules. Moreover, the proposed oxide neuromorphic transistors can be dissolved in deionized water easily. The results here indicate potential applications of the proposed restickable oxide neuromorphic transistors in flexible neuromorphic cognitive platforms.
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