In this work, new highly sensitive graphene-based flexible strain sensors are produced. In particular, polyvinylidene fluoride (PVDF) nanocomposite films filled with different amounts of graphene nanoplatelets (GNPs) are produced and their application as wearable sensors for strain and movement detection is assessed. The produced nanocomposite films are morphologically characterized and their waterproofness, electrical and mechanical properties are measured. Furthermore, their electromechanical features are investigated, under both stationary and dynamic conditions. In particular, the strain sensors show a consistent and reproducible response to the applied deformation and a Gauge factor around 30 is measured for the 1% wt loaded PVDF/GNP nanocomposite film when a deformation of 1.5% is applied. The produced specimens are then integrated in commercial gloves, in order to realize sensorized gloves able to detect even small proximal interphalangeal joint movements of the index finger.

中文翻译：

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用于智能手套运动检测的防水石墨烯-PVDF 可穿戴应变传感器

在这项工作中，生产了新的基于石墨烯的高灵敏度柔性应变传感器。特别是，生产了填充有不同数量石墨烯纳米片 (GNP) 的聚偏二氟乙烯 (PVDF) 纳米复合薄膜，并评估了它们作为可穿戴传感器用于应变和运动检测的应用。对生产的纳米复合薄膜进行形态表征，并测量其防水性、电气和机械性能。此外，在静态和动态条件下研究了它们的机电特性。特别是，应变传感器对所施加的变形显示出一致且可重复的响应，并且当施加 1.5% 的变形时，对于负载为 1% wt 的 PVDF/GNP 纳米复合膜，测量到的应变系数约为 30。