fig1

Figure 1. Fabrication process and microscopic SEM characterization of the sensor. (A) Schematic illustration of the fabrication process of the graphene-CNTs-TPU/fabric strain sensor; (B) Photograph of the sensor; (C) SEM characterization of the fabric; (D) SEM characterization of the HT paper; (E) SEM characterization of the composite film; (F) SEM characterization of the composite film at a high magnification ratio. SEM: Scanning electron microscope; CNTs: carbon nanotubes; TPU: thermoplastic polyurethane; HT: heat transfer; GR: graphene.