fig7

Figure 7. (A) A digital photograph of RGO-BC/BC bilayer hydrogel sheets. A cross-sectional FESEM image of dried RGO-BC/BC films (B) and interface of an RGO-BC/BC bilayer film with the connection of BC nanofibers (C). (D) Working mechanism of the pressure sensor based on RGO/BC films with BC layers as the dielectric layer. (E) Bending stability of the RGO-BC/BC pressure sensor. The curve radius is ~6 mm. The inset images indicate the bending process (left, scale bar = 1 cm) and the interface connection after 8000 bending cycles (right, scale bar = 500 nm). (A-E) Reproduced with permission^[39]. Copyright 2020, Springer.