Figure 3: Structural changes of hybrid fibres during tensile tests.

(a,b) SEM images showing the surfaces of hybrid fibres before stretching (a) and after fracture (b). The arrows of (a) and (b) indicate the fibre axis. Scale bar equals 1 μm, and the inset scale bar in (b) equals 200 nm. (c) Schematic illustrations showing structural changes of hybrid fibres generated during tensile tests. Black rectangles, black lines and blue curved lines are RGOFs, SWNTs and PVA chains, respectively.