Investigation on sensitivity of a polymer/carbon nanotube composite strain sensor

Ning Hu, Yoshifumi Karube, Masahiro Arai, Tomonori Watanabe, Cheng Yan, Yuan Li, Yaolu Liu, Hisao Fukunaga

Research output: Contribution to journalArticle

478 Citations (Scopus)

Abstract

Extensive numerical simulation and experimental measurements have been conducted to understand the effects of processing parameters and material properties on sensor sensitivity in polymer/carbon nanotube (CNT) composite sensors. The numerical simulation was based on an improved three-dimensional statistical resistor network model incorporating the tunneling effect between the neighbouring nanotubes, and a fiber reorientation model. The behaviors of a sensor subjected to both tensile and compressive strains were investigated. Both numerical and experimental results indicate that a higher tunneling resistance or higher ratio of the tunneling resistance to the total resistance of the sensor leads to a higher sensor sensitivity. Processing conditions and material properties, such as weight fraction, diameter and conductivity of CNTs, curing temperature, mixing rate and barrier height of polymer matrix all play a role in determining the sensor sensitivity. Crown

Original languageEnglish
Pages (from-to)680-687
Number of pages8
JournalCarbon
Volume48
Issue number3
DOIs
Publication statusPublished - 2010 Mar 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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  • Cite this

    Hu, N., Karube, Y., Arai, M., Watanabe, T., Yan, C., Li, Y., Liu, Y., & Fukunaga, H. (2010). Investigation on sensitivity of a polymer/carbon nanotube composite strain sensor. Carbon, 48(3), 680-687. https://doi.org/10.1016/j.carbon.2009.10.012