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High-order sensory processing nanocircuit based on coupled VO2 oscillators

Author

Listed:
  • Ke Yang

    (Peking University)

  • Yanghao Wang

    (Peking University)

  • Pek Jun Tiw

    (Peking University)

  • Chaoming Wang

    (Peking University)

  • Xiaolong Zou

    (Peking University)

  • Rui Yuan

    (Peking University)

  • Chang Liu

    (Peking University)

  • Ge Li

    (Chinese Academy of Sciences)

  • Chen Ge

    (Chinese Academy of Sciences)

  • Si Wu

    (Peking University)

  • Teng Zhang

    (Peking University)

  • Ru Huang

    (Peking University)

  • Yuchao Yang

    (Peking University
    Peking University
    Peking University
    Chinese Institute for Brain Research (CIBR))

Abstract

Conventional circuit elements are constrained by limitations in area and power efficiency at processing physical signals. Recently, researchers have delved into high-order dynamics and coupled oscillation dynamics utilizing Mott devices, revealing potent nonlinear computing capabilities. However, the intricate yet manageable population dynamics of multiple artificial sensory neurons with spatiotemporal coupling remain unexplored. Here, we present an experimental hardware demonstration featuring a capacitance-coupled VO2 phase-change oscillatory network. This network serves as a continuous-time dynamic system for sensory pre-processing and encodes information in phase differences. Besides, a decision-making module for special post-processing through software simulation is designed to complete a bio-inspired dynamic sensory system. Our experiments provide compelling evidence that this transistor-free coupling network excels in sensory processing tasks such as touch recognition and gesture recognition, achieving significant advantages of fewer devices and lower energy-delay-product compared to conventional methods. This work paves the way towards an efficient and compact neuromorphic sensory system based on nano-scale nonlinear dynamics.

Suggested Citation

  • Ke Yang & Yanghao Wang & Pek Jun Tiw & Chaoming Wang & Xiaolong Zou & Rui Yuan & Chang Liu & Ge Li & Chen Ge & Si Wu & Teng Zhang & Ru Huang & Yuchao Yang, 2024. "High-order sensory processing nanocircuit based on coupled VO2 oscillators," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45992-8
    DOI: 10.1038/s41467-024-45992-8
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