基于多孔聚二甲基硅氧烷用于人体脉搏信号检测的压力传感器  

Pressure Sensor Based on Porous Polydimethylsiloxane for Human Pulse Signal Detection

作　　者：赵吉 张阳阳 李莉萍 熊双洋 梁雨轩 ZHAO Ji;ZHANG Yangyang;LI Liping;XIONG Shuangyang;LIANG Yuxuan(School of Electronic Information Engineering,Anhui University,Hefei Anhui 230601,China;School of Internet,Anhui University,Hefei Anhui 230039,China)

机构地区：[1]安徽大学电子信息工程学院,安徽合肥230601 [2]安徽大学互联网学院,安徽合肥230039

出　　处：《传感技术学报》2025年第1期53-61,共9页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金面上项目(62101001,62071002)。

摘　　要：随着最近智能可穿戴电子设备的快速增长,高性能柔性压力传感器也引起了很多关注。提出了一种直接而有用的方法,采用索氏萃取技术制备了多壁碳纳米管(MWCNTs)和二维石墨烯(GR)作为导电填料以及聚二甲基硅氧烷(PDMS)作为柔性基体的复合材料中的多孔结构,其中MWCNTs和GR构建了一个协同导电网络。因此,基于MWCNTs-GR/PDMS复合材料的压阻式压力传感器由于具有多孔结构和协同导电网络,拥有了良好的传感器特性,其优越性能包括响应快(~80 ms)、高稳定性(5000次循环)和高灵敏度(~0.618 kPa^(-1))。而且,所提出的传感器可以安装在人体和机器人手上,以检测人体活动,因此在可穿戴电子皮肤上具有很大的前景。With rapid rise in smart wearable electronic devices,high-performance flexible pressure sensors are receiving much interest.A straight-forward and useful pressure sensor approach is introduced.The Soxhlet extraction technology is employed to generate a por-ous structure with multi-walled carbon nanotubes(MWCNTs)in one dimension,graphene(GR)in two dimensions as conductive fillers,and polydimethylsiloxane(PDMS)as flexible matrix.The MWCNTs and GR form a cooperative conductive network.The analyzed data reveal that the MWCNTs-GR/PDMS composite-based piezoresistive pressure sensor exhibits good sensor characteristics,such as fast re-sponse(~80 ms),high stability(5000 cycles),and high sensitivity(~0.618 kPa^(-1)),owing to the porous structure and cooperative conductive network.Furthermore,the proposed sensor is successfully installed on the human body and robotic hands to detect human ac-tivities.Thus,the newly developed sensor has great prospects in wearable electronic skin.

关 键 词：柔性压力传感器 多孔结构 协同导电网络 脉搏检测 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]