基于石墨烯/WSe2范德瓦尔斯异质连接的光电共调节的抑制性人工突触
Youfa Zhou1,2, Ping Zhang1, Jiaqi Li2
1School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, People's Republic of China.
Nanotechnology
|September 9, 2023
概括
这项研究介绍了使用石墨烯/WSe2异质连接进行神经形态计算的光学人工突触. 该设备模仿大脑功能,在图像识别和厌恶性学习模拟中达到高精度.
科学领域:
- 材料科学 材料科学 材料科学
- 神经科学是一个神经科学.
- 计算机科学 计算机科学
背景情况:
- 光学人工突触比电气突触具有优势,像石墨烯和WSe2这样的二维材料对神经形态计算有希望.
- 范德瓦尔斯的异构结构可以创建模仿生物系统的人工突触装置,用于低能耗应用.
研究的目的:
- 开发一种基于石墨烯/WSe2范德瓦尔斯异质连接的光电共调节的抑制性人工突触.
- 模拟大脑视觉皮层功能,并展示突触可塑性和逻辑操作.
主要方法:
- 一个石墨烯/WSe2范德瓦尔斯异质连接装置的制造.
- 门电压和光脉冲的协同应用用于光电共调.
- 构建用于图像识别和厌恶性学习模拟的人工神经网络.
主要成果:
- 已证明具有抑制性突触性质,包括突触后电流,短期/长期可塑性,并配对脉冲促进.
- 使用人工神经网络在MNIST手写数字识别中获得了92.5%的准确性.
- 成功模仿了对酒精戒断的厌恶性学习行为.
结论:
- 开发的人工突触显示了神经形态计算和人工视觉系统的有希望的能力.
- 电气和光学协同调制为先进的人工突触设计提供了可行的途径.
- 该设备显示了可穿戴电子和智能系统中的应用潜力.
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