For flexible strain sensors, unmodified polymer substrates often have unsatisfactory performances. Herein, we report a biomimetic petal patterned polydimethylsiloxane strain sensor comprising Ir nanoparticles-modified multi-walled carbon nanotubes. Under optimal processing, the modified flexible strain sensor exhibits better comprehensive performances, such as sensitivity up to 20.33, sensing range of 0%–35%, response time of 242 ms, and more than 9000 cycles of repeated stretch–release. Moreover, it can be used for monitoring human pulse, wrist motion, and phonation. Such a facile and friendly flexible strain sensor will bring great potentials in wearable devices, human motion detection, and soft robotics.

中文翻译：

---

一种可拉伸花瓣图案应变传感器，包括用于人体运动检测的Ir纳米粒子修饰的多壁碳纳米管

对于柔性应变传感器，未改性的聚合物基底通常具有不令人满意的性能。在这里，我们报告仿生花瓣图案的聚二甲基硅氧烷应变传感器，包括Ir纳米粒子改性的多壁碳纳米管。在最佳处理条件下，改进后的柔性应变传感器具有更好的综合性能，例如灵敏度高达20.33，感应范围为0％至35％，响应时间为242 ms，以及超过9000个重复拉伸释放周期。而且，它可以用于监视人的脉搏，腕部运动和发声。这种轻便，友好的柔性应变传感器将为可穿戴设备，人体运动检测和软机器人领域带来巨大潜力。