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首页> 外文期刊>Advanced Functional Materials >Strain Sensors with a High Sensitivity and a Wide Sensing Range Based on a Ti_3C_2T_x (MXene) Nanoparticle-Nanosheet Hybrid Network
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Strain Sensors with a High Sensitivity and a Wide Sensing Range Based on a Ti_3C_2T_x (MXene) Nanoparticle-Nanosheet Hybrid Network

机译：基于Ti_3C_2T_x（MXene）纳米颗粒-纳米片混合网络的高灵敏度和宽感测范围的应变传感器

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摘要

A high sensitivity and large stretchability are desirable for strain sensors in wearable applications. However, these two performance indicators are contradictory, since the former requires a conspicuous structural change under a tiny strain, whereas the latter demands morphological integrity upon a large deformation. Developing strain sensors with both a high sensitivity (gauge factor (GF) 100) and a broad strain range (50%) is a considerable challenge. Herein, a unique Ti3C2Tx MXene nanoparticle-nanosheet hybrid network is constructed. The migration of nanoparticles leads to a large resistance variation while the wrapping of nanosheet bridges the detached nanoparticles to maintain the connectivity of the conductive pathways in a large strain region. The synergetic motion of nanoparticles and nanosheets endows the hybrid network with splendid electrical-mechanical performance, which is reflected in its high sensitivity (GF 178.4) over the entire broad range (53%), the super low detection limit (0.025%), and a good cycling durability (over 5000 cycles). Such high performance endows the strain sensor with the capability for full-range human motion detection.
机译：对于可穿戴应用中的应变传感器而言，期望高灵敏度和大拉伸性。但是，这两个性能指标是相互矛盾的，因为前者需要在很小的应变下进行明显的结构变化，而后者则需要在大变形时的形态完整性。开发既具有高灵敏度（应变系数（GF）> 100）又具有宽应变范围（> 50％）的应变传感器是一个巨大的挑战。本文中，构建了独特的Ti3C2Tx MXene纳米颗粒-纳米片混合网络。纳米颗粒的迁移导致大的电阻变化，而纳米片的包裹桥接分离的纳米颗粒，以在较大的应变区域中保持导电路径的连通性。纳米颗粒和纳米片的协同运动赋予了混合网络出色的机电性能，这体现在其在整个宽范围（53％）内的高灵敏度（GF> 178.4），超低检测限（0.025％），以及良好的循环耐久性（超过5000次循环）。如此高的性能使应变传感器具有全方位人体运动检测能力。

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  • 来源
    《Advanced Functional Materials》 |2019年第14期|1807882.1-1807882.10|共10页
  • 作者

    Yang Yina; Shi Liangjing; Cao Zherui; Wang Ranran; Sun Jing;

  • 作者单位

    Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China;

    Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China;

    Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China;

    Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China;

    Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    controllable synthesis; flexible and wearable; microcrack propagation mechanism; strain sensors; Ti3C2Tx;

    机译：可控合成;柔性耐磨;微裂纹扩展机制;应变传感器;Ti3C2Tx;

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