fig2

Figure 2. Stretchability enhancement strategies. (A) Bioinspired design of hierarchical 3D serpentine-helix combination. Reproduced with permission^[43]. Copyright 2023, Wiley-VCH; (B) Kirigami membrane and its stability. Reproduced with permission^[44]. Copyright 2022, Wiley-VCH; (C) Chemical structures of IDTBT and n-NIPS and Photocrosslinking process. Reproduced with permission^[54]. Copyright 2023, Wiley-VCH; (D) Schematic of mechanism of stretchability and elasticity. Reproduced with permission^[59]. Copyright 2024, Wiley-VCH; (E) Preparation diagram of the composite fiber and EDS images of it. Reproduced with permission^[73]. Copyright 2023, American Chemical Society. IDTBT: Indacenodithiophene-benzothiadiazole; n-INPS: nitrene-induced photocrosslinkers, n denotes the number of ethylene glycol repeating units in the crosslinker molecule; EDS: energy dispersive spectroscopy; PAAm: poly(acrylamide); PEGDA: poly(ethylene glycol) diacrylate; PEDOT: poly(3,4-ethylenedioxythiophene); PSS: poly(styrenesulfonate); IPA: isopropyl alcohol; DMSO: dimethyl sulfoxide; PU: polyurethane.