Scalable Layered Heterogeneous Hydrogel Fibers with Strain‐Induced Crystallization for Tough, Resilient, and Highly Conductive Soft Bioelectronics

) without compromising toughness and resilience. Furthermore, high-performance LHHF capacitive iontronic strain/pressure sensors and epidermal electrodes are developed, capable of accurately and stably capturing biomechanical and bioelectrical signals from the human body under long-term, dynamic conditions. The LHHF offers a promising route for developing hydrogels with uniquely integrated electromechanical attributes, advancing practical wearable healthcare applications.