Abstract Combining triboelectric nanogenerator (TENG) and textile materials, wearable electronic devices show great application prospects in biomotion energy harvesting and multifunctional self-power sensors in this coming intelligent era. However, fabrication method by rigidly stitching two or more individual fabrics together and working mode that must cooperate with external materials, make textile-based TENG bulky, stiff, uncomfortable and hinder their range of application. Here, by using a double needle bed flat knitting machine technology, a 3D double faced interlock fabric TENG (3DFIF-TENG) is designed as self-powered, stretchable and substrate-free wearable TENG sensors (such as a bending sensor to detect arm bending degree, pressure sensors) and energy harvesting devices. Besides, due to the unique 3D structure and after improving the structure by knitting a woven fabric-TENG in the middle layer, the 3DFIF-TENG can be further used as a multifunctional sensors, such as a 3D tactile sensor. Besides, by knitting a woven fabric-TENG in the middle layer of the 3DFIF-TENG, it can be further used as a multifunctional sensor, such as a 3D tactile sensor. The substrate-free and 3D structure design in this paper may provide a promising direction for self-powered, stretchable wearable devices in energy harvesting, human motion or robot movement detection, and smart prosthetics.

中文翻译：

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3D 双面互锁织物摩擦纳米发电机，用于生物运动能量收集和自供电拉伸和 3D 触觉传感器

摘要 结合摩擦纳米发电机（TENG）和纺织材料，可穿戴电子设备在即将到来的智能时代在生物运动能量收集和多功能自功率传感器方面显示出巨大的应用前景。然而，将两种或多种单独的织物刚性缝合在一起的制造方法和必须与外部材料配合的工作模式，使得基于纺织品的 TENG 体积大、僵硬、不舒服，并阻碍了它们的应用范围。在这里，通过使用双针床横机技术，将 3D 双面互锁织物 TENG (3DFIF-TENG) 设计为自供电、可拉伸且无基材的可穿戴 TENG 传感器（例如用于检测手臂弯曲的弯曲传感器）度、压力传感器）和能量收集设备。除了，由于独特的 3D 结构，在通过在中间层编织织物 TENG 来改进结构后，3DFIF-TENG 可以进一步用作多功能传感器，例如 3D 触觉传感器。此外，通过在 3DFIF-TENG 的中间层编织织物-TENG，它可以进一步用作多功能传感器，例如 3D 触觉传感器。本文中的无基板和 3D 结构设计可能为自供电、可拉伸可穿戴设备在能量​​收集、人体运动或机器人运动检测以及智能假肢方面提供一个有希望的方向。它可以进一步用作多功能传感器，例如 3D 触觉传感器。本文中的无基板和 3D 结构设计可能为自供电、可拉伸可穿戴设备在能量​​收集、人体运动或机器人运动检测以及智能假肢方面提供有希望的方向。它可以进一步用作多功能传感器，例如 3D 触觉传感器。本文中的无基板和 3D 结构设计可能为自供电、可拉伸可穿戴设备在能量​​收集、人体运动或机器人运动检测以及智能假肢方面提供有希望的方向。