Intrinsically Stretchable Motion Sensor Enabled by 3D Graphene Foam Integrated Hydrogel

IF 13 2区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Small Pub Date : 2025-01-29 DOI:10.1002/smll.202407957
Wei Sheng, Jianxin Zhou, Yuxi Jia, Wentao Li, Ruixi Qiao, Zixi Liu, Wenjie Xu, Tao Zhang
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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.

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来源期刊
Small
Small 工程技术-材料科学:综合
CiteScore
17.70
自引率
3.80%
发文量
1830
审稿时长
2.1 months
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.
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Polydimethylsiloxane (PDMS) primary agent
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iron chloride hexahydrate (FeCl3?6H2O)
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ethanol
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heptane
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N,N,N’,N’-tetramethylethylenediamine (TEMED)
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lithium chloride (LiCl)
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ammonium persulfate (APS)
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N,N-methylenbisacrylamide (MBAA)
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Acrylamide (AAm)
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Polydimethylsiloxane (PDMS) secondary agent
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