光遗传学
神经形态工程学
记忆电阻器
可重构性
神经科学
仿真
光电子学
材料科学
人工神经网络
计算机科学
电子工程
人工智能
工程类
电信
生物
经济
经济增长
作者
Qihao Sun,Zhecheng Guo,Xing Zhu,Qian Jiang,Huiyuan Liu,Xuerong Liu,Cui Sun,Yuejun Zhang,Wu Liu,Run-Wei Li
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2023-01-01
卷期号:15 (23): 10050-10056
被引量:4
摘要
Memristive synapses compatible with optogenetic techniques allow for the fast and low-power manipulation of memory activities using light in artificial neural systems. However, most of the optoelectronic memristors operate in the hybrid optic-electric mode; the reversible regulation of memristive states solely using light for optogenetic emulation is difficult. In this work, an all-optical controlled optoelectronic memristor (Au/Cs2AgBiBr6/Au) is developed for mimicking optogenetics-tuned memory formation and erasing behaviors in biological synapses. We show that the memristor exhibits positive and negative persistent photoconductivity effects under different light wavelengths, attributed to light-regulated carrier de-trapping/trapping at the Au/Cs2AgBiBr6 interface. This device can emulate both excitatory and inhibitory synaptic plasticity and associated learning and memory effects under light illumination. We constructed a prototype optoelectronic synaptic array and implemented the all-optically controlled memory implantation, erasing, and modification, demonstrating the light-reconfigured cognition capabilities. Our findings will inspire the development of all-optically controlled artificial neural systems with good reconfigurability for efficient neuromorphic computing and machine vision.
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