In the research of flexible pressure sensors supported by three-dimensional skeleton structure, the combination of nanomaterials and skeleton structure is a difficult problem to be further broken. Herein, a piezoresistive sensor based on the graphene-PDMS @ sponge was prepared by fixing graphene on a sponge skeleton using PDMS. The as-prepared piezoresistive sensor exhibits high elasticity (strain up to 85%), high sensitivity (0.075KPa-1), wide responding range (0~50KPa) and high stability (2000 cycle pressure test). The piezoresistive sensor is used to detect blood pressure, heartbeat and human movements, such as finger bending, elbow movement, knee squatting, which shows good consistency and stability of the as-prepared sensor through the synergy of sponge, PDMS and graphene. The Graphene-PDMS @ sponge sensor shows potential applications in medical testing and electronic skin.

中文翻译：

---

基于石墨烯-PDMS@海绵的高灵敏度、可靠和灵活的压阻式压力传感器

在三维骨架结构支撑的柔性压力传感器的研究中，纳米材料与骨架结构的结合是一个需要进一步破解的难题。在此，通过使用 PDMS 将石墨烯固定在海绵骨架上，制备了基于石墨烯-PDMS@海绵的压阻传感器。所制备的压阻传感器具有高弹性（应变高达85%）、高灵敏度（0.075KPa-1）、宽响应范围（0~50KPa）和高稳定性（2000次循环压力测试）。压阻式传感器用于检测血压、心跳和人体运动，如手指弯曲、肘部运动、膝盖蹲下，通过海绵、PDMS和石墨烯的协同作用，所制备的传感器具有良好的一致性和稳定性。