Bioinspired fabrication of graphene/PDMS composite materials for high-performance flexible pressure sensor  

面向高性能柔性压力传感器的石墨烯/PDMS复合材料的仿生制造

作　　者：Dandan Xu Peilin Zhou Haibo Yu Jianhang Chen Ya Zhong Hongji Guo Xiuli Zhang Yueqing Xia Guangrui Xiang Lianqing Liu 许丹丹;周培林;于海波;陈建行;仲亚;郭洪吉;张秀丽;夏月庆;项光瑞;刘连庆

机构地区：[1]College of Mechanical and Electrical Engineering,Henan Agricultural University,Zhengzhou 450002,China [2]State Key Laboratory of Robotics,Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110o16,China

出　　处：《Science China Materials》2025年第4期1184-1195,共12页中国科学(材料科学)(英文版)

基　　金：supported by the National Natural Science Foundation of China(62203154);the Project of the State Key Laboratory of Robotics,China(2023-O24);the Key Scientific and Technological Project of Henan Province,China(232102220090)。

摘　　要：Flexible pressure sensors show significant potential for applications in the fields of intelligent wearable devices,electronic skins,and health monitoring.However,the fast response saturation and high viscoelasticity of the flexible sensing materials often result in reduced sensitivity and increased response hysteresis,limiting the practical application of these sensors.Therefore,achieving flexible pressure sensors with both high sensitivity and wide detection range still remains great challenges.In this study,bioinspired by the forcesensitive sensing mechanism and physiological structure of human skin,we propose a low-cost flexible fabrication method for high-performance piezoresistive flexible pressure sensor based on graphene/polydimethylsiloxane(PDMS)composite materials.The results show that the sensor has an ultra-high sensitivity(321 kPa^(-1)),wide detection range(0.01-1000 kPa),fast response time(29 ms),and exhibits stability over 5000 cycles.In addition,the successful detections and applications indicate the wide application prospect of the developed sensor in fields of health monitoring,human-machine interactions and intelligent robotic perception.柔性压力传感器在智能可穿戴设备、电子皮肤和健康监测领域展示出巨大的应用潜力.然而,柔性传感材料具有快速响应饱和及高黏弹性会导致灵敏度降低和响应迟滞的增加,限制了传感器的实际应用.因此,实现具有高灵敏度和宽检测范围的柔性压力传感器仍然是一个巨大挑战.在本研究中,受人体皮肤力敏传感机理和生理结构的启发,提出了一种灵活、低成本的制造方法用于制造基于石墨烯/PDMS复合材料的高性能压阻式压力传感器.结果表明,所制备的传感器具有超高灵敏度(321 kPa^(-1))、宽检测范围(0.01-1000 kPa)、快速响应时间(29 ms)和超过5000次循环的稳定性.此外,成功的检测和应用表明所研究的传感器在健康监测、人机交互和智能机器人感知等领域具有广阔的应用前景.

关 键 词：BIOINSPIRED flexible pressure sensor GRAPHENE ultrahigh sensitivity wide detection range 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]