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基于MXene/RGO复合材料的具有多孔压力敏感结构的柔性可穿戴传感器

Flexible Wearable Sensor with Porous Pressure-Sensitive Structure Based on MXene/RGO Composites

  • 摘要: 随着微电子技术与柔性智能电子的快速发展,二维材料因其独特的层状结构,在柔性电子领域具有良好的应用潜力。MXene由于具有良好的导电性与较高的亲水性,在柔性传感领域引起了广泛关注。然而,纯MXene层间距离有限,在压力传感领域受到极大限制。故提出了一种快速发泡技术来实现多孔结构的制备。采用多孔结构的MXene/RGO复合材料作为压力敏感材料,并设计了叉指电极作为传感器的电极引线层,构建了压力传感器。实验结果表明,该传感器具有优异的压力敏感性能,其检测范围可达到0~1.7 MPa,最大传感器灵敏度达到0.556 kPa-1,快速响应时间以及释放时间分别为为82 ms和63 ms,且具有良好的稳定性(≥1 800次循环)。同时,在应用研究中表明该压力传感器在人体运动监测、人机交互、医疗监测等领域均具有广泛的应用前景。

     

    Abstract: With the rapid development of microelectronics technology and flexible intelligent electronics, two-dimensional materials have good application potential in the field of flexible electronics due to their unique layered structure. In particular, MXene has attracted a lot of attention in the field of flexible sensing due to its good electrical conductivity and high hydrophilicity. However, pure MXene is extremely limited in the field of pressure sensing due to its limited interlayer distance. In this study, a rapid foaming technique was proposed to realize the preparation of porous structures. The pressure sensor was constructed by using the porous MXene/RGO composite material as the pressure-sensitive material, and the interdigitated electrode was designed as the electrode lead layer of the sensor. The experimental results show that the sensor has excellent pressure sensitivity performance, its detection range can reach 0~1. 7 MPa, the maximum sensor sensitivity can reach 130 kPa-1, and the fast response time and release time are 82 ms and 63 ms, respectively, and it has good stability (≥1 800 cycles). At the same time, the application research shows that the pressure sensor has a wide range of application prospects in the fields of human motion monitoring, human-computer interaction, and medical monitoring.

     

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