Recently, flexible strain sensors have attracted great attention due to their wide applications in human‐machine interface interaction, healthcare, soft robotics, etc. While many reported flexible strain sensors are stretchable, the stability of sensors under long‐term deformation is still a significant challenge. In this work, a strain sensor has been fabricated by encapsulating semi‐embedded aligned silver nanowires with a PDMS layer, showing a maximum gauge factor of 396.3 at 100% strain and a durability of 3000 cycles stretching. The strain‐sensitive material also remains stable after multiple bending and twisting during the 10000 cycles test. Furthermore, the strain sensor is endowed with a triboelectric nanogeneration function based on the triboelectric nanogeneration effect. The device has a maximum output power density of 9.36 mW m−2, allowing it to realize strain sensing while converting the mechanical energy produced by daily activities into electrical power. As proof of demonstration, attaching the device to the finger joint provides accurate real‐time strain sensing and stable output of triboelectric power.

中文翻译：

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由半嵌入式对齐银纳米线制成的灵活灵敏的摩擦电纳米发电机应变传感器


近年来，柔性应变传感器因其在人机界面交互、医疗保健、软机器人等领域的广泛应用而受到广泛关注。虽然许多报道的柔性应变传感器是可拉伸的，但传感器在长期变形下的稳定性仍然是一个重大挑战。在这项工作中，通过将半嵌入式对齐的银纳米线与 PDMS 层封装来制造应变传感器，在 100% 应变下的最大应变因子为 396.3，拉伸周期为 3000 次。在 10000 次循环测试期间，应变敏感材料在多次弯曲和扭曲后也能保持稳定。此外，应变传感器被赋予了基于摩擦电纳米发生效应的摩擦电纳米发生功能。该器件的最大输出功率密度为 9.36 mW m−2，使其能够在将日常活动产生的机械能转化为电能的同时实现应变传感。作为演示证明，将设备连接到手指关节可提供准确的实时应变感应和稳定的摩擦电输出。