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

• 成果类型: Article
• 署名作者: Wang, Weichen; Jiang, Yuanwen; Zhong, Donglai; Zhang, Zhitao; Choudhury, Snehashis; Lai, Jian-Cheng; Gong, Huaxin; Niu, Simiao; Yan, Xuzhou; Zheng, Yu; Shih, Chien -Chung; Ning, Rui; Lin, Qing; Li, Deling; Kim, Yun-Hi; Kim, Jingwan; Wang, Yi-Xuan; Zhao, Chuanzhen; Xu, Chengyi; Ji, Xiaozhou; Nishio, Yuya; Lyu, Hao; Tok, Jeffrey B. -H.; Bao, Zhenan
• 署名单位: Stanford University; Stanford University; Stanford University; Stanford University; Stanford University; Capital Medical University; Gyeongsang National University; Gyeongsang National University
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-9275
• DOI: 10.1126/science.ade0086
• 发表日期: 2023-05-19
• 页码: 735-742
• 关键词: pressure sensor; polymer; transistors; network; manipulation; relaxation; matrix

摘要

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.