Flexible, Wearable, and Ultralow-Power-Consumption Electronic Skins Based on a Thermally Reduced Graphene Oxide/Carbon Nanotube Composite Film

Based on a thermally reduced graphene oxide (rGO)/carbonnanotube(CNT) composite film, two kinds of flexible, wearable, and ultralow-power-consumptionelectronic skins (E-skins) are prepared. They have been used to successfullyperceive the signals of stretch, flexion, temperature, and pressure,and their gauge factors (GFs) are 233, 2.37 rad(-1), 5.53 x 10(-4) & DEG;C-1,and 1.58 kPa(-1), as the mass fraction of grapheneis 20% in the composite film. Compared with the E-skins based on purerGO film, our E-skins have larger stretching stain (& epsilon;) and bendingangle (& theta;) ranges and higher temperature- and pressure-basedGF values. Furthermore, the prepared E-skins have been successfullyapplied in various fields, and their ultralow power consumption hasalso been confirmed to be below 72 nW in wearable device applications.