多色全光调制的人工突触基于P-MoSe2/PO异构结构的Memristor
Yumo Li1, Hao Sun1, Langchun Yue1
1Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China.
The journal of physical chemistry letters
|August 20, 2024
概括
研究人员使用P-MoSe2/PO异构结构开发了一种新型的人工突触,证明了用于神经形态计算的全光调制. 这种由大脑启发的设备通过可见光和近红外光模仿突触功能,为先进的视觉系统铺平了道路.
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.
- 电气工程 电气工程
背景情况:
- ·诺伊曼瓶阻碍了传统架构中的计算效率.
- 光电子记忆装置对人工突触有希望,但完全光调制,特别是近红外光,具有挑战性.
- 开发由大脑启发的神经形态范式对于下一代计算至关重要.
研究的目的:
- 开发一种完全光调节的突触记忆器,能够模拟突触功能.
- 研究突触行为的多波长 (可见到近红外) 光调制.
- 探索这些设备在人工视觉系统和复杂信息处理中的潜力.
主要方法:
- 通过一阶段化过程制造P-MoSe2/PO异构结构.
- 多波长光调制切换操作和突触行为 (PSC,PFF,STM,LTM) 的表征.
- 对光感应的切换机制的研究和对帕夫洛夫条件的证明.
主要成果:
- 实现了多波长 (470nm至808nm) 的调制切换操作,重置电压为0.21-0.97V.
- 展示了各种突触行为,包括突触后电流 (PSC),配对脉冲促进,短期记忆 (STM) 和长期记忆 (LTM).
- 观察到依赖光强度的PSC调制和可调的STM到LTM过渡,以及帕夫洛夫式调节.
结论:
- P-MoSe2 / PO 异构结构能够在广泛的光谱中实现完全光调制的人工突触功能.
- 该设备表现出类似大脑的记忆行为和处理能力,适合复杂的输入处理.
- 这项工作为诸如色彩识别等应用提供了通往多波长调制人工视觉系统的途径.
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