Neuromorphic sensorimotor loop embodied by monolithically integrated, low-voltage, soft e-skin.

Journal: Science (New York, N.Y.)
Published Date: May 19, 2023

Abstract

Artificial skin that simultaneously mimics sensory feedback and mechanical properties of natural skin holds substantial promise for next-generation robotic and medical devices. However, achieving such a biomimetic system that can seamlessly integrate with the human body remains a challenge. Through rational design and engineering of material properties, device structures, and system architectures, we realized a monolithic soft prosthetic electronic skin (e-skin). It is capable of multimodal perception, neuromorphic pulse-train signal generation, and closed-loop actuation. With a trilayer, high-permittivity elastomeric dielectric, we achieved a low subthreshold swing comparable to that of polycrystalline silicon transistors, a low operation voltage, low power consumption, and medium-scale circuit integration complexity for stretchable organic devices. Our e-skin mimics the biological sensorimotor loop, whereby a solid-state synaptic transistor elicits stronger actuation when a stimulus of increasing pressure is applied.

Authors

  • Weichen Wang
    Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
  • Yuanwen Jiang
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Donglai Zhong
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Zhitao Zhang
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Snehashis Choudhury
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Jian-Cheng Lai
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Huaxin Gong
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Simiao Niu
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Xuzhou Yan
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Yu Zheng
    Department of Thoracic Surgery, West China Hospital of Sichuan University, Chengdu 610041, China.
  • Chien-Chung Shih
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Rui Ning
    Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
  • Qing Lin
    National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, Guangdong Laboratory of Lingnan Modern Agriculture, College of Animal Science, South China Agricultural University, Guangzhou, China.
  • Deling Li
    Department of Radiology, Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, CA 94305, USA.
  • Yun-Hi Kim
    Department of Chemistry and RINS, Gyeongsang National University, Jinju 660-701, South Korea.
  • Jingwan Kim
    Department of Chemistry and RINS, Gyeongsang National University, Jinju 660-701, South Korea.
  • Yi-Xuan Wang
    College of Integrated Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan Province, China. Electronic address: wangyyyxuan@163.com.
  • Chuanzhen Zhao
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Chengyi Xu
    Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697, United States.
  • Xiaozhou Ji
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Yuya Nishio
    Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Hao Lyu
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Jeffrey B-H Tok
    Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Zhenan Bao
    Department of Chemical Engineering, Stanford University, Stanford, CA, 94305-5025, USA.

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