In this work, we report a class of wearable, stitchable, and sensitive carbon nanofiber (CNF)-polydimethylsiloxane (PDMS) composite-based piezoresistive sensors realized by carbonizing electrospun polyacrylonitrile (PAN) nanofibers and subsequently embedding in PDMS elastomeric thin films. Electro-mechanical tactile sensing characterization of the resulting piezoresistive strain sensors revealed a linear response with an average force sensitivity of ~1.82 kN⁻¹ for normal forces up to 20 N. The real-time functionality of the CNF-PDMS composite sensors in wearable body sensor networks and advanced bionic skin applications was demonstrated through human motion and gesture monitoring experiments. A skin-inspired artificial soft sensor capable of demonstrating proprioceptive and tactile sensory perception utilizing CNF bundles has been shown. Furthermore, a 16-point pressure-sensitive flexible sensor array mimicking slow adapting low threshold mechanoreceptors of glabrous skin was demonstrated. Such devices in tandem with neuromorphic circuits can potentially recreate the sense of touch in robotic arms and restore somatosensory perception in amputees.

在这项工作中，我们报告了一类可穿戴、可缝合且灵敏的碳纳米纤维 (CNF)-聚二甲基硅氧烷 (PDMS) 复合基压阻传感器，该传感器通过碳化电纺聚丙烯腈 (PAN) 纳米纤维并随后嵌入 PDMS 弹性薄膜中实现。所得压阻应变传感器的机电触觉传感表征显示线性响应，平均力灵敏度约为 1.82 kN ^-1法向力高达 20 N。 CNF-PDMS 复合传感器在可穿戴身体传感器网络和高级仿生皮肤应用中的实时功能通过人体运动和手势监测实验得到证明。已经展示了一种受皮肤启发的人造软传感器，能够利用 CNF 束展示本体感觉和触觉感觉。此外，还展示了一个 16 点压敏柔性传感器阵列，模拟了无毛皮肤的慢适应低阈值机械感受器。这种与神经形态电路相结合的设备可以潜在地重建机械臂的触觉，并恢复截肢者的体感。