fig3

Figure 3. Scale-fabricable high-performance MEFs for energy conversion: (A) Large-scale wrapping spinning process and structure illustration of wool-based CSY. Reprinted with permission from^[52]. Copyright 2025, Wiley; (B) 3D fiber formats based on scalable thermal processing of water-resistant thermoplastic elastomers and composites. Reprinted with permission from^[57]. Adhering to the CC BY 4.0 agreement. MEFs: Mechano-electric fibers; CSY: core-sheath yarn; 3D: three-dimensional; PET: polyethylene terephthalate; SEBS: styrene-ethylene-butylene-styrene; PTFE: polytetrafluoroethylene.