Smart skin is highly desired to be ultrasensitive and self-powered as the medium of artificial intelligence. Here, an ultrasensitive self-powered mechanoluminescence smart skin (SPMSS) inspired by the luminescence mechanism of cephalopod skin and the ultrasensitive response of spider-slit-organ is developed. Benefitting from the unique strain-dependent microcrack structure design based on Ti₃C₂T_x (MXene)/carbon nanotube synergistic interaction, SPMSS possesses excellent strain sensing performances including ultralow detection limit (0.001% strain), ultrahigh sensitivity (gauge factor, GF = 3.92 × 10⁷), ultrafast response time (5 ms), and superior durability and stability (>45 000 cycles). Synchronously, SPMSS exhibits tunable and highly sensitive mechanoluminescence (ML) features under stretching. A relationship between ML features, strain sensing performances, and the deformation has been established successfully. Importantly, the SPMSS demonstrates excellent properties as triboelectric nanogenerator (4 × 4 cm²), including ultrahigh triboelectric output (open-circuit voltage V_OC = 540 V, short-circuit current I_SC = 42 µA, short-circuit charge Q_SC = 317 nC) and power density (7.42 W m⁻²), endowing the smart skin with reliable power source supply and self-powered sensing ability. This bioinspired smart skin exhibits multifunctional applications in health monitoring, visual sensing, and self-powered sensing, showing great potential in artificial intelligence.

中文翻译：

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用于超灵敏健康监测、视觉和自供电传感的仿生多功能光子电子智能皮肤

作为人工智能的媒介，人们非常希望智能皮肤具有超灵敏和自供电。在这里，受头足类皮肤的发光机制和蜘蛛缝器官的超灵敏反应的启发，开发了一种超灵敏的自供电机械发光智能皮肤（SPMSS）。得益于基于 Ti ₃ C ₂ T _x (MXene)/碳纳米管协同作用的独特应变相关微裂纹结构设计，SPMSS 具有优异的应变传感性能，包括超低检测限（0.001% 应变）、超高灵敏度（应变系数、GF = 3.92 × 10 ⁷)、超快响应时间 (5 ms) 以及卓越的耐用性和稳定性 (>45 000 次循环)。同时，SPMSS 在拉伸下表现出可调谐和高灵敏度的机械发光 (ML) 特征。已成功建立了 ML 特征、应变传感性能和变形之间的关系。重要的是，SPMSS 作为摩擦纳米发电机 (4 × 4 cm ² ) 表现出优异的性能，包括超高摩擦电输出（开路电压V _OC  = 540 V，短路电流I _SC  = 42 µA，短路充电Q _SC  = 317 nC）和功率密度（7.42 W m ^-2)，赋予智能皮肤可靠的电源供应和自供电感应能力。这种仿生智能皮肤在健康监测、视觉传感和自供电传感方面具有多功能应用，在人工智能方面显示出巨大的潜力。