Bidirectional Phosphorescent Neuroplasticity for All-Optical Neurovision.

Journal: ACS nano
Published Date: May 21, 2025

Abstract

All-optical neuromorphics that can capture, process, and output photonic signals are in prospect to advance optical computing and imaging. Bidirectional neuroplasticity is essential for executing training and inference in optical neural networks, but most of the all-optical hardware only exhibits unidirectional weight modulation. Here, we explore bidirectional neuroplasticity in carbon dot phosphorescence (CDP) with potentiation and depression synaptic behaviors capable of neuroregulation for photonic intensity. This function enables the CDP as a neuroconverter to convert pulse light into excitatory and inhibitory light output for neuromorphic vision owing to the delayed release and superimposition dynamics of excitons in persistent phosphorescence, which allows for image digitization or direct observation. By integration with an optical neural network, the real-time motion tracking of light spots, including trajectory, direction, and speed, can be recorded and recognized, with a high accuracy of 96%. Such phosphor-based neuromorphics can be extended to other phosphorescent architectures for all-optical imaging and computing.

Authors

  • Zifan Li
    Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
  • Zicheng Zhang
    School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou 325027, P. R. China.
  • Yueyue Wu
    Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
  • Zhe Zhou
    Department of Business Administration, Zhongnan University of Economics and Law, Wuhan, Hubei 430073, China.
  • Zixi He
    Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
  • Bin Liu
    Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Department of Endocrinology, Neijiang First People's Hospital, Chongqing, China.
  • Xingyue Ji
    Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
  • Fa Zhang
    High Performance Computer Research Center, Institute of Computing Technology, Chinese Academy of Sciences, Beijing, China.
  • Chen Chen
    The George Institute for Global Health, Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia.
  • Fei Xiu
    Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
  • Xuemei Dong
    Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
  • Yuhan Zhang
    Department of Gastric Surgery, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.
  • Qiye Wang
    Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
  • Xiujuan Li
    School of Electrical Engineering, Guangxi University, Nanning 530004, China. Electronic address: l781453379@163.com.
  • Wei Huang
    Shaanxi Institute of Flexible Electronics, Northwestern Polytechnical University, 710072 Xi'an, China.
  • Juqing Liu
    Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.

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