• 文献标题:   Fabrication of polydimethylsiloxane/graphene flexible strain sensors by using the scraping and coating method
  • 文献类型:   Article
  • 作  者:   ZHANG ZQ, ZHANG XL, XU GS, LIU XJ, GUO Q, FENG Z, JIA JT, KU PT
  • 作者关键词:  
  • 出版物名称:   REVIEW OF SCIENTIFIC INSTRUMENTS
  • ISSN:   0034-6748 EI 1089-7623
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1063/5.0089849
  • 出版年:   2022

▎ 摘  要

Production of flexible strain sensors is complex, time-consuming, and expensive. In this study, a novel fabrication method of polydimethylsiloxane/graphene nanocomposite conductive materials was proposed by using the scraping and coating method for manufacturing sandwich-shape flexible strain sensors. A ZQ-60B tensile testing machine was employed to test the mechanical properties of flexible sensors with 1%, 3%, and 5% graphene content. The results revealed that the stress and strain of the flexible strain sensor exhibited a linear relationship, and the linear correlation coefficients were 0.99706, 0.99819, and 0.99826, respectively. The concentration of graphene was 1%, 3%, and 5%, and the gauge factors (GFs) of the sensor were 24, 6, and 3, respectively. With the increase in the graphene content, the GF decreased gradually. This phenomenon could be attributed to tunneling, which increased the number of conductive pathways with an increase in the graphene content. Furthermore, the sensor exhibited excellent stability after 100 cycles of stretching/scaling. The finger joint bending test revealed that the flexible strain sensor is reproducible and exhibits excellent application prospects in monitoring human movement and health. Published under an exclusive license by AIP Publishing.