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

IF 6.8 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science China Materials Pub Date : 2025-02-13 DOI:10.1007/s40843-024-3227-7

Jian Xu (, ), Lili Ren (, ), Wei Song (, ), Nan Wu (, ), Zeyu Wang (, ), Shuai Wang (, ), Qiancheng He (, ), Qingzhu Zhang (, )

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引用次数: 0

Abstract

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 Ca²⁺ 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 Ca²⁺ 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.

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来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.