fig7

Figure 7. (A) Illustration of the electrospinning, thermomechanical pressing, and ice quenching processes^[75]. Reproduced from Ref.^[75] with open access from Springer Nature, licensed under CC BY-NC-ND, no modifications to original figure; (B)Schematic diagrams of the folding-pressing process in polymer films, as well as a schematic diagram illustrating the mechanism of β-crystalline phase formation throughout the entire process^[76]. Reproduced from Ref.^[76] with open access from Wiley. PVDF: Polyvinylidene fluoride; OAF: oriented amorphous fraction.