Fig. 6: Mechanical performance of reinforced magnetic films.

a Stress–strain curves of wCNC films, bCNC films, N_bCNC_MNP3 and bCNC_MNP3 composite magnetic films. b Ashby plot of tensile strength vs toughness of the bCNC_MNP3 composite films and the previously reported CNC-based chiral nematic films, chiral nematic CNC-based composites, and nematic CNCs-reinforced composites. Inset shows folding of the bCNC_MNP3 film.