Recently, there has been growing demand for wearable electronic devices/strain sensors in soft robotics, body-health monitoring, human–machine interfaces, and human motion detection. Wearable strain sensors feature fast and multistimuli sensitivity, high flexibility, ultrastretchability, and biocompatibility. Although progress in flexible strain sensors is exponential, the production of wearable sensors faces several challenges, such as reliability and reproducibility. An in-depth understanding of the sensing mechanisms of flexible strain sensors based on’ polymeric nanocomposites is needed to fabricate reliable and reproducible sensors and move from the prototype phase into the industry phase. In this review, types of strain sensors and key parameters such as linearity, gauge factor (sensitivity), hysteresis, and durability are explained in the context of recently published work. In addition, current challenges and perspectives in relation to wearable strain sensors are delineated.

中文翻译：

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基于聚合物纳米复合材料的可穿戴应变传感器的关键因素和性能标准

最近，软机器人、身体健康监测、人机界面和人体运动检测等领域对可穿戴电子设备/应变传感器的需求不断增长。可穿戴应变传感器具有快速和多刺激灵敏度、高灵活性、超拉伸性和生物相容性。尽管柔性应变传感器的进步呈指数级增长，但可穿戴传感器的生产面临着可靠性和可重复性等多项挑战。需要深入了解基于聚合物纳米复合材料的柔性应变传感器的传感机制，以制造可靠且可重复的传感器并从原型阶段进入工业阶段。在这篇评论中，应变传感器的类型和关键参数，如线性度、应变系数（灵敏度）、迟滞，和耐久性在最近发表的作品的背景下进行了解释。此外，还描述了与可穿戴应变传感器相关的当前挑战和前景。