Highly machine washable e textiles with high strain sensitivity and high thermal conduction
Electronic textiles (e textiles) have attracted great attention due to their promising application in areas like flexible electronics, wearable devices, healthcare and sports. They should be machine washable and have high thermal conduction for heat management. But there are few reports on e textiles with high thermal conductivity. Here, we report highly machine washable e textiles with high strain sensitivity and high thermal conduction. The e textiles are prepared by anchoring carbon nanotubes (CNTs) into non woven fabric (NWF) by nanosoldering and then depositing reduced graphene oxide (rGO) through chemical reduction of graphene oxide (GO) The rGO/CNTs/NWF textiles are highly sensitive to the strain and have a gauge factor of 32.65 at a tensile strain of 1.0% They can detect a subtle strain as low as 0.01% In addition, the rGO and CNTs attached by nanosoldering have good adhesion to NWFs. The e textiles are highly machine washable and can be operated in water for a long time. Moreover, they can have a thermal conductivity of 2.90 W m 1 K 1, much higher than normal textiles. Their applications as wearable sensors for monitoring body motion and blood pulse are also demonstrated.