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首页> 外文期刊>Advanced Functional Materials >Highly Aligned, Anisotropic Carbon Nanofiber Films for Multidirectional Strain Sensors with Exceptional Selectivity
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Highly Aligned, Anisotropic Carbon Nanofiber Films for Multidirectional Strain Sensors with Exceptional Selectivity

机译：高度对准的各向异性碳纳米纤维膜，用于多向应变传感器，具有出色的选择性

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摘要

Realization of sensing multidirectional strains is essential to understanding the nature of complex motions. Traditional uniaxial strain sensors lack the capability to detect motions working in different directions, limiting their applications in unconventional sensing technology areas, like sophisticated human-machine interface and real-time monitoring of dynamic body movements. Herein, a stretchable multidirectional strain sensor is developed using highly aligned, anisotropic carbon nanofiber (ACNF) films via a facile, low-cost, and scalable electrospinning approach. The fabricated strain sensor exhibits semitransparency, good stretchability of over 30%, outstanding durability for over 2500 cycles, and remarkable anisotropic strain sensing performance with maximum gauge factors of 180 and 0.3 for loads applied parallel and perpendicular to fiber alignment, respectively. Cross-plied ACNF strain sensors are fabricated by orthogonally stacking two single-layer ACNFs, which present a unique capability to distinguish the directions and magnitudes of strains with a remarkable selectivity of 3.84, highest among all stretchable multidirectional strain sensors reported so far. Their unconventional applications are demonstrated by detecting multi-degrees-of-freedom synovial joint movements of the human body and monitoring wrist movements for systematic improvement of golf performance. The potential applications of novel multidirectional sensors reported here may shed new light into future development of next-generation soft, flexible electronics.
机译：感应多向应变的实现对于理解复杂运动的本质至关重要。传统的单轴应变传感器缺乏检测在不同方向上运动的能力，从而限制了它们在非常规传感技术领域的应用，例如复杂的人机界面和动态人体运动的实时监控。本文中，通过一种高度对准的各向异性碳纳米纤维（ACNF）膜，通过一种简便，低成本和可扩展的静电纺丝方法，开发出了一种可拉伸的多向应变传感器。制成的应变传感器具有半透明性，超过30％的良好可拉伸性，超过2500个循环的出色耐久性以及出色的各向异性应变传感性能，分别在平行于或垂直于光纤对准的情况下，最大应变系数为180和0.3。交叉折叠式ACNF应变传感器是通过正交堆叠两个单层ACNF制成的，它们具有独特的能力来区分应变的方向和大小，其选择性高达3.84，是迄今为止报道的所有可拉伸多向应变传感器中最高的。通过检测人体的多个自由度滑膜关节运动并监控腕部运动以系统地改善高尔夫性能，证明了它们的非常规应用。本文报道的新型多向传感器的潜在应用可能会为下一代软，柔性电子产品的未来发展提供新的思路。

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  • 来源
    《Advanced Functional Materials》 |2019年第29期|1901623.1-1901623.11|共11页
  • 作者

    Lee Jeng-Hun; Kim Jungmo; Liu Dan; Guo Fengmei; Shen Xi; Zheng Qingbin; Jeon Seokwoo; Kim Jang-Kyo;

  • 作者单位

    Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    Korea Adv Inst Sci & Technol, Graphene Res Ctr KI NanoCentury, Dept Mat Sci & Engn, Daejeon 305338, South Korea;

    Korea Adv Inst Sci & Technol, Graphene Res Ctr KI NanoCentury, Dept Mat Sci & Engn, Daejeon 305338, South Korea;

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  • 正文语种 eng
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  • 关键词

    aligned carbon nanofibers; complex motion detections; electrospinning; multidirectional strain sensors; soft electronics;

    机译：排列的碳纳米纤维;复杂的运动检测;静电纺丝;多向应变传感器;软电子;

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