面向人体运动检测的纸基柔性压力阵列传感器

Paper-based flexible pressure sensor array for human motion detection

针对制备同时具有高灵敏度和大工作范围的柔性压力阵列传感器的挑战,以无尘纸作为基底,采用石墨烯-碳纳米管导电涂料和聚二甲基硅氧烷(PDMS)进行混合作为涂层,利用PDMS的粘性与涂料的导电性进行电气连接,使用激光切割进行阵列设计,高灵敏度(3.29 kPa-1)、大工作范围(0~45 kPa)的压力阵列传感器研制成功,同时纸基材料不易连接的问题也得到了解决。该传感器不仅可以用于检测大幅度的肢体运动,还可以用于探测细微的人体动作。由于该传感器具有柔软、灵敏度高、制造工艺简便、成本低、电气连接简便等优点,显示了其在可穿戴传感器领域和智能机器人触觉领域的应用潜力。

Aiming at the great challenge to fabricate flexible pressure array sensors with high sensitivity and large working range simultaneously,a pressure sensor with high sensitivity(3.29 kPa-1)and a large working range(0~45 kPa)using the air-laid paper is developed. The paper is soaked with the mixture composed of the graphene-carbon nanotubes and polydimethylsiloxane(PDMS).The paper-based sensing layer is sensitive to the pressure,convenient for electrical connecting, and easy to be laser cut into arrays.Based on the superior performance,the sensor can be used to detect not only the vigorous but also the subtle human motions.The advantages of the flexible high sensitivity,the facile fabrication process,low cost,easy electrical connecting,show the potential applications in the wearable sensor field and intelligent robots.