Jump to main content
Jump to site search

Issue 19, 2018
Previous Article Next Article

Network cracks-based wearable strain sensors for subtle and large strain detection of human motions

Author affiliations

Abstract

As an imitation of human skin's tactile sensing ability, flexible and stretchable strain sensors are highly desirable because of their various applications in health monitoring, robotics, and human–machine interfaces. However, it is still a big challenge to fabricate strain sensors with both high sensitivity and broad sensing range. Herein, we report a simple, low cost and scalable fabrication strategy to construct high performance strain sensors based on network cracks formed in multilayer carbon nanotubes (CNTs) films/polydimethylsiloxane (PDMS) composites. The microscopic thickness of multilayer CNTs can be precisely controlled to tune the formation of network cracks in CNTs films/PDMS composite, which is critical for simultaneously amplifying the sensitivity signal and sensing range of strain sensors. The optimized CNTs films/PDMS composite under appropriate stretching would fracture into gaps, islands, and bridges connecting separated islands. The formed network cracks easily, resulting in both high gauge factor (maximum value of 87) and a wide sensing range (up to 100%) of the strain sensor, which allows the detection of strain as low as 0.007% with excellent stability (1500 cycles), making it suitable for both subtle and large strain detection, including subtle signals of artery pulses, music vibration and large scale motions of joint bending.

Graphical abstract: Network cracks-based wearable strain sensors for subtle and large strain detection of human motions

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Jan 2018, accepted on 03 Apr 2018 and first published on 03 Apr 2018


Article type: Paper
DOI: 10.1039/C8TC00433A
Citation: J. Mater. Chem. C, 2018,6, 5140-5147
  • Open access: Creative Commons BY license
  •   Request permissions

    Network cracks-based wearable strain sensors for subtle and large strain detection of human motions

    S. Wang, P. Xiao, Y. Liang, J. Zhang, Y. Huang, S. Wu, S. Kuo and T. Chen, J. Mater. Chem. C, 2018, 6, 5140
    DOI: 10.1039/C8TC00433A

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements