Extraordinarily Stretchable All-Carbon Collaborative Nanoarchitectures for Epidermal Sensors

Adv Mater. 2017 Aug;29(31). doi: 10.1002/adma.201606411. Epub 2017 Jun 16.


Multifunctional microelectronic components featuring large stretchability, high sensitivity, high signal-to-noise ratio (SNR), and broad sensing range have attracted a huge surge of interest with the fast developing epidermal electronic systems. Here, the epidermal sensors based on all-carbon collaborative percolation network are demonstrated, which consist 3D graphene foam and carbon nanotubes (CNTs) obtained by two-step chemical vapor deposition processes. The nanoscaled CNT networks largely enhance the stretchability and SNR of the 3D microarchitectural graphene foams, endowing the strain sensor with a gauge factor as high as 35, a wide reliable sensing range up to 85%, and excellent cyclic stability (>5000 cycles). The flexible and reversible strain sensor can be easily mounted on human skin as a wearable electronic device for real-time and high accuracy detecting of electrophysiological stimuli and even for acoustic vibration recognition. The rationally designed all-carbon nanoarchitectures are scalable, low cost, and promising in practical applications requiring extraordinary stretchability and ultrahigh SNRs.

Keywords: all-carbon materials; collaborative nanoarchitectures; epidermal sensors.

MeSH terms

  • Epidermis
  • Graphite
  • Humans
  • Nanostructures*
  • Nanotubes, Carbon


  • Nanotubes, Carbon
  • Graphite