Xu Yunlong, Sun Zhongda, Bai Zhiqing, Shen Hua, Wen Run, Wang Fumei, Xu Guangbiao, Lee Chengkuo
Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, China.
Department of Electrical & Computer Engineering, National University of Singapore, Singapore, Singapore.
Nat Commun. 2024 Jul 17;15(1):6022. doi: 10.1038/s41467-024-50270-8.
Electronic skins with deep and comprehensive liquid information detection are desired to endow intelligent robotic devices with augmented perception and autonomous regulation in common droplet environments. At present, one technical limitation of electronic skins is the inability to perceive the liquid sliding information as realistically as humans and give feedback in time. To this critical challenge, in this work, a self-powered bionic droplet electronic skin is proposed by constructing an ingenious co-layer interlaced electrode network and using an overpass connection method. The bionic skin is used for droplet environment reconnaissance and converts various dynamic droplet sliding behaviors into electrical signals based on triboelectricity. More importantly, the two-dimensional sliding behavior of liquid droplets is comprehensively perceived by the e-skin and visually fed back in real-time on an indicator. Furthermore, the flow direction warning and intelligent closed-loop control of water leakage are also achieved by this e-skin, achieving the effect of human neuromodulation. This strategy compensates for the limitations of e-skin sensing droplets and greatly narrows the gap between artificial e-skins and human skins in perceiving functions.
具有深度和全面液体信息检测功能的电子皮肤，有望使智能机器人设备在常见的液滴环境中具备增强的感知和自主调节能力。目前，电子皮肤的一个技术局限性在于无法像人类那样逼真地感知液体滑动信息并及时给出反馈。针对这一关键挑战，在这项工作中，通过构建一种巧妙的共层交错电极网络并采用立交桥连接方法，提出了一种自供电的仿生液滴电子皮肤。该仿生皮肤用于液滴环境侦察，并基于摩擦电将各种动态液滴滑动行为转换为电信号。更重要的是，电子皮肤能够全面感知液滴的二维滑动行为，并在指示器上实时直观反馈。此外，这种电子皮肤还实现了水流方向预警和漏水智能闭环控制，达到了人类神经调节的效果。该策略弥补了电子皮肤传感液滴的局限性，大大缩小了人造电子皮肤与人类皮肤在感知功能上的差距。
