Gas-permeable and highly sensitive, washable and wearable strain sensors based on graphene/carbon nanotubes hybrids e-textile

Electronic textile (e-textile) has emerged as a new generation of wearable electronics with these promising applications in healthcare and human movement detection. Herein, we report the gas-permeable and wearable e-textile strain sensors based on reduced graphene oxide/carbon nanotubes (rGO/CNTs) hybrids with unique structures grown on the low cost and eco-friendly non-woven fabric (NWF) by using a novel and facile nanosoldering method via ultrasonication. The gas-permeable rGO/CNTs e-textile strain sensors are highly sensitive and wearable, and the gauge factors of the rGO/CNTs hybrids sensors are 34.69 and 1.21 kPa(-1) at 1 % tensile strain and 8.85 kPa pressure, respectively. Moreover, the gas-permeable and wearable rGO/CNTs e-textiles sensors also present good repeatability, super-hydrophobic performance, washability and durability at detecting stretching and compressing deformation, and it can be used for healthcare by monitoring the motions and blood pulse of human body.