Abstract Since sensors could be used for detecting multiple forms of mechanical deformations, we present a simple method for fabricating highly sensitive strain sensors using a conductive graphene/polymer sponge which is self-assembled by graphene flakes in the porous structure of the sponge. The graphene composite sponges exhibit outstanding electromechanical properties and can be processed into different dimensional sensors easily to detect multiple forms of mechanical deformations including tensile strain, impact, bending, vibrating and twisting. Although the sensitivity of the three-dimensional sensor is only 1.33 N-1, one-dimensional sensor exhibits high sensitivity up to 18.5 N-1. In addition, the one-dimensional sensor can evaluate human life activity, such as finger wag and even the impact caused by a hair. The shape of the graphene composite sponge can easily be arbitrarily customized in order to sense more accurately in practical applications.

中文翻译：

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用于多种形式应变传感器的多维柔性还原氧化石墨烯/聚合物海绵

摘要 由于传感器可用于检测多种形式的机械变形，我们提出了一种使用导电石墨烯/聚合物海绵制造高灵敏度应变传感器的简单方法，该海绵由海绵多孔结构中的石墨烯薄片自组装。石墨烯复合海绵具有出色的机电性能，可以轻松加工成不同尺寸的传感器，以检测多种形式的机械变形，包括拉伸应变、冲击、弯曲、振动和扭曲。虽然三维传感器的灵敏度仅为1.33 N-1，但一维传感器的灵敏度高达18.5 N-1。此外，一维传感器可以评估人类的生命活动，例如手指摆动甚至头发造成的冲击。