• 文献标题:   Ultra-highly sensitive graphene/polyaniline@epoxidized natural rubber strain sensors for human motion monitoring
  • 文献类型:   Article
  • 作  者:   GAO YF, SUN JY, TIAN XH, YUAN YZ
  • 作者关键词:   polyaniline, graphene, strain sensor
  • 出版物名称:   SENSORS ACTUATORS APHYSICAL
  • ISSN:   0924-4247 EI 1873-3069
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1016/j.sna.2023.114421 EA MAY 2023
  • 出版年:   2023

▎ 摘  要

Flexible strain sensors are one of the core devices in wearable electronics. At present, it is still difficult to develop flexible strain sensors with high stretchability, sensitivity, and long-term stability. In this work, polyaniline (PANI) was coated on the surface of epoxidized natural rubber (ENR) nanospheres to obtain the PANI@ENR nanospheres, and then mechanically blended with graphene (GN) sheets to prepare the GN/PANI@ENR com-posites. The composite conductive networks composed of PANI and GN endow the composites with excellent mechanical, electromechanical and strain-sensing performances. The strain-sensing tests show that the ENR composites possess an ultra-high gauge factor (GF) of 29671.7 within 270% of strain. Meanwhile the composites exhibit excellent cycling stability of over 2500 cycles. In addition, the GN/PANI@ENR strain sensors can monitor the large-strain (finger, wrist, elbow and knee joints bending) and small-strain (strains of vocal cord vibration, pulse, facial muscle movements) motions of the human body in real time, indicating a wide range of potential applications in wearable flexible electronics.