Carbon Nanotube Coated Textile Sensors with Ultrahigh Sensitivity for Human Motion Detection

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI:10.1109/SENSORS43011.2019.8956624

S. Doshi, Colleen Murray, A. Chaudhari, E. Thostenson

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引用次数: 5

Abstract

Highly sensitive stretch sensors are developed by coating knitted fabrics with carbon nanotubes. An innovative electrophoretic deposition approach is used to deposit a thin and conformal carbon nanotube coating on a nylon-polyesterspandex knitted fabric. The carbon nanotube coating is chemically bonded on the surface of the fibers and creates an electrically conductive network. As a result, these sensors display piezoresistivity; that is, the resistance of the sensor changes due to mechanical deformation. First, the sensing response under tension is characterized using mechanical testing equipment. The sensors are then integrated into compression knee sleeves to investigate sensing response due to knee flexion. When the sensing fabric is stretched, an increase in electrical resistance is observed due to change in the microstructure of the knitted fabric and because of the piezoresistivity of the coating. Under knee flexion, a resistance change of over three thousand percent is detected. The carbon nanotube coated knitted fabrics as flexible stretch sensors have wide-ranging applications in human motion analysis.

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用于人体运动检测的超高灵敏度碳纳米管涂层织物传感器

通过在针织物上涂覆碳纳米管，研制了高灵敏度的拉伸传感器。采用一种创新的电泳沉积方法，在尼龙-聚酯-氨纶针织物上沉积薄而适形的碳纳米管涂层。碳纳米管涂层在纤维表面化学键合，形成导电网络。因此，这些传感器显示压阻性;即传感器的电阻因机械变形而发生变化。首先，利用力学测试设备对张力下的传感响应进行表征。然后将传感器集成到压缩膝套中，以研究膝关节屈曲引起的传感响应。当感应织物被拉伸时，由于针织物微观结构的变化和涂层的压阻性，可以观察到电阻的增加。在膝盖弯曲的情况下，检测到的阻力变化超过三千%。碳纳米管涂层针织物作为柔性拉伸传感器在人体运动分析中有着广泛的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 IEEE SENSORS

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