Dynamic Liquid‐Metal Bridging: A Generalizable Strategy for Flexible Transparent and High‐Performance Electromagnetic Interference Shielding

ABSTRACT The rapid expansion of networked, intelligent human‑interactive devices urgently calls for flexible, transparent materials that can effectively suppress electromagnetic interference (EMI). However, conventional transparent conductors face an inherent performance trade‐off between optical transmittance, electrical conductivity, and mechanical flexibility. Herein, we report a dynamic liquid‐metal (LM) bridging strategy to construct a high‑performance, multifunctional composite film. This is achieved by integrating a spiderweb‐inspired silver nanowire (AgNW) mesh with a conformal Ti 3 C 2 T x MXene, interconnected via chemically activated LM nanojunctions. These fluidic junctions form reconfigurable conductive bridges that drastically reduce contact resistance, while simultaneously creating polarization‑active heterointerfaces with the MXene overlayer. This hierarchical architecture decouples electrical conductivity from optical opacity, enabling a dominant shielding mechanism that combines efficient mirror‑current reflection with enhanced interfacial polarization and Ohmic loss. The resulting flexible transparent film achieves a state‑of‑the‑art specific shielding effectiveness (SSE/t) of 3.38 × 10 5 dB cm 2 g −1 in the X‐band. Moreover, the dynamically bridged networks concurrently serve as sensitive strain sensors and uniform transparent heaters, integrating transparency, electromagnetic protection, sensing, and thermal management into a single platform. This work establishes a generalizable design strategy for advanced transparent EMI shields in next‐generation wearable electronics and smart systems.