北京师范大学毛兰群团队报道了用于神经形态功能的光调制纳米流体离子晶体管。相关研究成果发表在2024年11月26日出版的《德国应用化学》。

可以模拟神经元行为的神经形态系统，由于其在神经形态计算、人工智能和脑机接口中的潜在应用，在跨学科领域引起了越来越多的兴趣。然而，关于纳米流体离子传输对神经形态功能的光学调节的报道很少。

该文中，受依赖离子作为信号载体进行信息感知和处理的生物系统的启发，研究人员提出了一种基于金属有机框架膜（MOFM）的纳米流体晶体管，该膜具有光学调制的离子传输特性，可以模拟生物突触的功能。

通过突触权重的动态调节，研究人员使用连续的光学刺激成功地复制了，复杂的学习体验行为和巴甫洛夫联想学习过程。此外，研究人员使用图案化的光脉冲信号，演示了国际莫尔斯电码在纳米流体设备中的应用，展示了其在信息处理过程中的编码和解码能力。

该项研究将在很大程度上推动纳米流体神经形态设备的发展，用于集成传感、存储和计算功能的仿生离子电子学。

附：英文原文

Title: Optically Modulated Nanofluidic Ionic Transistor for Neuromorphic Functions

Author: Jiao Wang, Yanan Jiang, Tianyi Xiong, Jiahao Lu, Xiulan He, Ping Yu, Lanqun Mao

Issue&Volume: 2024-11-26

Abstract: Neuromorphic systems that can emulate the behavior of neurons have garnered increasing interest across interdisciplinary fields due to their potential applications in neuromorphic computing, artificial intelligence and brain-machine interfaces. However, the optical modulation of nanofluidic ion transport for neuromorphic functions has been scarcely reported. Herein, inspired by biological systems that rely on ions as signal carriers for information perception and processing, we present a nanofluidic transistor based on a metal-organic framework membrane (MOFM) with optically modulated ion transport properties, which can mimic the functions of biological synapses. Through the dynamic modulation of synaptic weight, we successfully replicate intricate learning-experience behaviors and Pavlovian associate learning processes by employing sequential optical stimuli. Additionally, we demonstrate the application of the International Morse Code with the nanofluidic device using patterned optical pulse signals, showing its encoding and decoding capabilities in information processing process. This study would largely advance the development of nanofluidic neuromorphic devices for biomimetic iontronics integrated with sensing, memory and computing functions.

DOI: 10.1002/anie.202418949

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202418949