Wearable strain sensors promote various emerging intelligent fields. Compared with the planar strain sensors, fibrous strain sensors are highly desirable for practical applications because they are favour of conformably attaching onto uneven surfaces and integrating into regular fabrics. Herein, inspired by the growth ring of tree, a highly stretchable silver nanowire/polydimethylsiloxane based fibrous strain sensor with spiral structure was innovatively prepared by cost-efficient coating plus rolling up technique. This unique spiral structure endowed the fibrous strain sensor with wide sensing range of 100% strain, outstanding linearity, gauge factor of 3.0, negligible hysteresis, and excellent reliability. Thanks to these superior characteristics, our sensor can not only accurately detect human movements when being attached to joints directly or woven in a cotton glove but also control the brightness of bulb when being connected into a circuit, showing great potential for wearable sensing electronics and next-generation circuit control elements. This work paves a promising way for the development of high-performance fibrous strain sensor.

可穿戴应变传感器推动了各种新兴的智能领域。与平面应变传感器相比，纤维应变传感器在实际应用中非常受欢迎，因为它们有利于贴合不平整的表面并集成到规则织物中。在此，受树木年轮的启发，采用经济高效的涂层加卷曲技术，创新地制备了一种具有螺旋结构的高度可拉伸的银纳米线/聚二甲基硅氧烷基纤维应变传感器。这种独特的螺旋结构赋予了纤维应变传感器 100% 应变的宽传感范围、出色的线性度、3.0 的应变系数、可忽略的滞后和卓越的可靠性。由于这些优越的特性，我们的传感器不仅可以在直接连接到关节或编织在棉手套中时准确检测人体动作，还可以在连接到电路时控制灯泡的亮度，显示出在可穿戴传感电子设备和下一代电路控制元件方面的巨大潜力。这项工作为开发高性能纤维应变传感器铺平了道路。