fig2

Figure 2. The characterization of sensor performance. (A) Response curves of sensors with conductive ink printed on ultra-elastic fabric decorated with HT paper, cleanroom wiper decorated with HT paper and untreated ultra-elastic fabric; (B) Strain sensing range, sensitivity and linearity of graphene-CNTs-TPU/fabric flexible strain sensor based on ultra-elastic fabric decorated with HT paper; (C) The cyclic responses of the stabilized sensor were measured under various strains at a frequency of 0.1 Hz; (D) The relative resistance of the stabilized sensor was observed during cyclic stretching at a strain of 20% across frequencies ranging from 0.05 to 1 Hz; (E) The tensile and recovery response times under a 5% strain were 166 and 662 milliseconds, respectively; (F) Long-term stability was assessed through durability testing of the graphene-CNTs-TPU strain sensor at a tensile rate of 0.5 mm/s over 3,000 cycles. HT: Heat transfer; CNTs: carbon nanotubes; TPU: thermoplastic polyurethane.