Pressure Sensors Based on Densely Structured Graphene Fibers for Motion Monitoring

IF 17.2 1区工程技术 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Fiber Materials Pub Date : 2024-12-06 DOI:10.1007/s42765-024-00502-9

Yifan Zhi, Honghua Zhang, Lugang Zhang, Qianqian Li, Xiangtian Kuang, Wen Wu, Qingqing Zhou, Ping Li, Wei Li, Huanxia Zhang

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引用次数: 0

Abstract

Piezoresistive pressure sensors have received considerable attention because of their simple structure, high sensitivity and low cost. Graphene, which is known for its outstanding mechanical and electrical properties, has shown great application potential as a sensor material. However, its durability and performance consistency in practical applications still require enhancement. In this study, magnetic graphene fibers (MGFs) are prepared via wet spinning, using graphene oxide (GO), doped with Fe₃O₄ nanoparticles. The resulting MGFs exhibit a high tensile strength of 58.6 MPa, a strain of 5.3% and an electrical conductivity of 1.7 × 10⁴ S/m. These MGFs are utilised to construct a multilayer fabric for fabrication of flexible pressure sensors. The confinement within the spinning channel facilitates an ordered arrangement of GO sheets, resulting in MGFs with superior electrical and mechanical properties. The issuing MGFs pressure sensors demonstrate a wide detection range (0–120 kPa), high sensitivity (0.233 kPa⁻¹, 0–40 kPa) and rapid response/recovery times (121 ms/158 ms). In addition, it exhibits a remarkable durability, maintaining performance over 1300 cycles, during continuous operation, with negligible degradation. This sensor shows excellent capability in monitoring human physiological activities, indicating its substantial application potential in wearable devices.

Graphical Abstract

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基于致密结构石墨烯纤维的运动监测压力传感器

压阻式压力传感器因其结构简单、灵敏度高、成本低等优点而受到广泛关注。石墨烯以其优异的机械和电气性能而闻名，作为传感器材料显示出巨大的应用潜力。但在实际应用中，其耐久性和性能一致性仍有待提高。在本研究中，使用掺杂了Fe3O4纳米粒子的氧化石墨烯（GO），通过湿纺丝制备了磁性石墨烯纤维（MGFs）。所得MGFs的抗拉强度为58.6 MPa，应变为5.3%，电导率为1.7 × 104 S/m。这些mgf被用来构建用于制造柔性压力传感器的多层织物。在纺丝通道内的限制有利于氧化石墨烯片的有序排列，从而产生具有优越电气和机械性能的mgf。发布MGFs压力传感器具有检测范围宽（0 ~ 120kpa）、灵敏度高（0.233 kPa−1,0 ~ 40kpa）、响应/恢复时间快（121 ms/158 ms）等特点。此外，它还具有卓越的耐用性，在连续运行期间，可保持超过1300个循环的性能，几乎可以忽略不计。该传感器在监测人体生理活动方面表现出优异的能力，在可穿戴设备中具有巨大的应用潜力。图形抽象

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来源期刊

Advanced Fiber Materials Multiple-

CiteScore

18.70

自引率

11.20%

发文量

109

期刊介绍： Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al. Publishing on fiber or fiber-related materials, technology, engineering and application.