Figure 6: Images of fibre structure and a fibre-derived spring. | Nature Communications

Figure 6: Images of fibre structure and a fibre-derived spring.

From: Synergistic toughening of composite fibres by self-alignment of reduced graphene oxide and carbon nanotubes

Figure 6

(a) SEM image of a fracture surface showing well-oriented RGOFs and SWNTs in a 1:1 RGOF/SWNT wet-spun hybrid fibre. Scale bar equals 500 nm. (b) Magnified image of the above fracture surface. The scale bar equals 100 nm. (c) SEM image of the layered structure on the surface of a 1:1 hybrid fibre wet spun using a polymer-free coagulation bath. The scale bar equals 1 μm. (d) A 1:1 hybrid PVA composite fibre that has been twisted by using an electric motor. The inset shows the twist angle. The scale bar equals 50 μm. The insert is an SEM image showing the orientation angle of the nanotubes with respect to the fibre axis. (e) Photograph showing a hybrid fibre sewn into a rubber band and an attached 3.5-cm long needle. (f) A spring-shaped hybrid fibre that was set by annealing at 150 °C (spring length: ~6.5 mm, spring diameter: ~1.2 mm and fibre diameter: ~50 μm).

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