Neuromorphic sensorimotor loop embodied by monolithically integrated, low-voltage, soft e-skin-猫眼课题宝

DOI：

10.1126/science.ade0086

发表时间：

2023-05

期刊：

Science

影响因子：

56.9

通讯作者：

中科院分区：

综合性期刊1区

文献类型：

作者：

Weichen Wang;Yuanwen Jiang;Donglai Zhong;Zhitao Zhang;Snehashis Choudhury;J. Lai;Huaxin Gong;Simiao Niu;Xuzhou Yan;Yu-Qing Zheng;Chien‐Chung Shih;Ruijian Ning;Q. Lin;Deling Li;Yun‐Hi Kim;Jingwan Kim;Yi-Xuan Wang;Chuanzhen Zhao;Chengyi Xu;Xiaozhou Ji;Yuya Nishio;Hao Lyu;J. B. Tok;Zhenan Bao

人造皮肤同时模仿天然皮肤的感觉反馈和机械性能，为下一代机器人和医疗设备带来了巨大的希望。然而，实现这样一个可以与人体无缝结合的仿生系统仍然是一个挑战。通过对材料性能、器件结构和系统架构的合理设计和工程设计，实现了一种整体式软假体电子皮肤。它具有多模式感知、神经形态脉冲序列信号产生和闭环系统驱动的能力。使用三层高介电常数弹性介质，我们实现了与多晶硅晶体管相当的低亚阈值摆幅、低操作电压、低功耗和中等规模的电路集成复杂性，适用于可伸缩有机器件。我们的电子皮肤模仿了生物感觉运动回路，在施加不断增加的压力刺激时，固态突触晶体管会产生更强的刺激。我们的皮肤为我们的身体提供了一层保护层，但它也能够提供详细的感官反馈和与我们周围环境的软互动。Wang等人。设计了一种假体电子皮肤，它结合了有机半导体晶体管，没有刚性组件，因此模仿了真实皮肤的机械方面(见Sekitani的透视)。同时，它可以感知温度和压力等外部刺激，并将这些刺激编码为电脉冲。作者表明，假体皮肤可以在体内唤起大鼠运动皮质的神经元放电，从而引发脚趾抽搐。-Marc S.Lavine神经形态电子皮肤系统同时模拟自然皮肤的闭合感觉编码和机械柔软性。

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. Description Editor’s summary Our skin provides a protective layer for our bodies, but it also enables detailed sensory feedback and soft interactions with our surroundings. Wang et al. devised a prosthetic electronic skin that incorporates organic semiconductor transistors and has no rigid components, thus mimicking the mechanical aspects of real skin (see the Perspective by Sekitani). At the same time, it can sense external stimuli such as temperature and pressure and encode these stimuli into electrical pulses. The authors showed that the prosthetic skin could evoke neuronal firings at the motor cortex in a rat in vivo, which triggered toe twitching. —Marc S. Lavine A neuromorphic e-skin system simultaneously emulates closed-loop sensory encoding and mechanical softness of natural skin.

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

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