An environment-friendly gradient double-layer wearable hydrogel strain sensor for human motion monitoring and deformation recognition actuator  

针对人体运动检测和变形识别驱动器应用的环境友好型梯度双层水凝胶应变传感器

作　　者：Jian Xu Lili Ren Wei Song Nan Wu Zeyu Wang Shuai Wang Qiancheng He Qingzhu Zhang 徐健;任丽丽;宋伟;吴楠;王泽宇;王帅;贺乾城;张清珠

机构地区：[1]Key Laboratory of Bionic Engineering(Ministry of Education),College of Biological and Agricultural Engineering,College of Bionic Science and Engineering,JilinUniversity,Changchun 130022,China [2]College of Engineering and Technology,Jilin Agricultural University,Changchun 130118,China [3]School of Engineering,Huzhou University,Huzhou 313000,China

出　　处：《Science China Materials》2025年第4期1162-1173,共12页中国科学(材料科学)(英文版)

基　　金：funded by the National Natural Science Foundation of China(32472003);Jilin Provincial Scientific and Technological Development Program(20230508019RC);Graduate Innovation Fund of Jilin University(2024CX067)。

摘　　要：Soft sensors and actuators are crucial components of soft robotics that have received considerable attention from the scientific community because of their wide-ranging applications.Integrating these elements into a unified soft material remains challenging.In this study,we used Ca^(2+)spraying and annealing posttreatment to fabricate a gradient-structured double-layer hydrogel for use as a sensitive sensor and pH-responsive actuator.Precisely controlling the duration of the Ca^(2+)and annealing treatments produced a double-layer hydrogel with a distinct double-layer structure,tunable mechanical properties and excellent electrical conductivity.Additionally,the hydrogels have high ionic conductivity and can be used for wearable stretch sensors for monitoring human motions.The inherent gradient structure enables the hydrogel to be used as actuator for target grasping and gripping targets.Sensing and clamping signals can be wirelessly transmitted in real-time to a cell phone via signal processing and transmission equipment.The developed double-layer hydrogel integrated with conductive sensing and soft actuators could be used to design soft robots capable of signal sensing and actuation.因为软体机器人技术的广泛应用,软体传感器和软体驱动器作为其主要部件而受到科学家的广泛关注,但是将两者整合到一个软体机器人中仍然具有挑战性.通过使用Ca^(2+)溶液喷涂和退火后处理技术,我们制备了具有灵敏感知能力和pH响应驱动能力的梯度双层水凝胶.通过精确控制Ca^(2+)溶液喷涂和退火处理的时间,该双层水凝胶得到了可调控的机械性能和优异导电性能.该水凝胶具有良好的离子导电性,可作为监测人体运动的可穿戴应变传感器.其独特的梯度结构使其可作为用于目标抓取和夹持的驱动器.感应和夹持信号可通过信号处理和传输设备无线实时地传输到手机终端上.所开发的双层水凝胶集成了导电传感和软体驱动功能,可用于设计具有信号传感和执行能力的软体机器人.

关 键 词：polyvinyl alcohol ALGINATE annealing sensor ACTUATOR soft robots 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]