{"title":"Intrinsically Stretchable Motion Sensor Enabled by 3D Graphene Foam Integrated Hydrogel","authors":"Wei Sheng, Jianxin Zhou, Yuxi Jia, Wentao Li, Ruixi Qiao, Zixi Liu, Wenjie Xu, Tao Zhang","doi":"10.1002/smll.202407957","DOIUrl":null,"url":null,"abstract":"<p>Stretchable hydrogel devices are highly desirable for their capacity to seamlessly integrate significant stretchability, high conductivity, and exceptional biocompatibility. Nonetheless, the substantial disparity in stiffness between soft hydrogels and commonly rigid electrode materials often leads to pronounced performance fluctuations or even complete failure of sensor circuits in practical applications. Here, the study introduces an intrinsically stretchable graphene-hydrogel strain sensor (GHSS) fabricated by integrating a hydrogel and a 3D graphene foam with very closely matched elastic moduli. The GHSS demonstrates a strain detection limit of 0.02%, a rapid response time of 64 ms, and long-term stability, enabling the detection of human joint movements, physiological signals, touch pad input, and exercise monitoring.</p>","PeriodicalId":228,"journal":{"name":"Small","volume":"21 8","pages":""},"PeriodicalIF":13.0000,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Small","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/smll.202407957","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Stretchable hydrogel devices are highly desirable for their capacity to seamlessly integrate significant stretchability, high conductivity, and exceptional biocompatibility. Nonetheless, the substantial disparity in stiffness between soft hydrogels and commonly rigid electrode materials often leads to pronounced performance fluctuations or even complete failure of sensor circuits in practical applications. Here, the study introduces an intrinsically stretchable graphene-hydrogel strain sensor (GHSS) fabricated by integrating a hydrogel and a 3D graphene foam with very closely matched elastic moduli. The GHSS demonstrates a strain detection limit of 0.02%, a rapid response time of 64 ms, and long-term stability, enabling the detection of human joint movements, physiological signals, touch pad input, and exercise monitoring.
期刊介绍:
Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments.
With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology.
Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.