Wearable and Highly Sensitive Graphene Strain Sensors for Human Motion Monitoring

Authors

  • Yan Wang,

    1. Department of Physics and Nanoscience and Nanotechnology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang, China
    2. Center for Nano and Micro Mechanics, Tsinghua University, Beijing, China
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  • Li Wang,

    1. Department of Physics and Nanoscience and Nanotechnology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang, China
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  • Tingting Yang,

    1. Center for Nano and Micro Mechanics, Tsinghua University, Beijing, China
    2. School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing, China
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  • Xiao Li,

    1. Center for Nano and Micro Mechanics, Tsinghua University, Beijing, China
    2. School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing, China
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  • Xiaobei Zang,

    1. School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing, China
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  • Miao Zhu,

    1. Center for Nano and Micro Mechanics, Tsinghua University, Beijing, China
    2. School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing, China
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  • Kunlin Wang,

    1. School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing, China
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  • Dehai Wu,

    1. Department of Mechanical Engineering, Tsinghua University, Beijing, China
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  • Hongwei Zhu

    Corresponding author
    1. Center for Nano and Micro Mechanics, Tsinghua University, Beijing, China
    2. School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing, China
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Abstract

Sensing strain of soft materials in small scale has attracted increasing attention. In this work, graphene woven fabrics (GWFs) are explored for highly sensitive sensing. A flexible and wearable strain sensor is assembled by adhering the GWFs on polymer and medical tape composite film. The sensor exhibits the following features: ultra-light, relatively good sensitivity, high reversibility, superior physical robustness, easy fabrication, ease to follow human skin deformation, and so on. Some weak human motions are chosen to test the notable resistance change, including hand clenching, phonation, expression change, blink, breath, and pulse. Because of the distinctive features of high sensitivity and reversible extensibility, the GWFs based piezoresistive sensors have wide potential applications in fields of the displays, robotics, fatigue detection, body monitoring, and so forth.

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