Reinforced Concrete‐Inspired Multiscale Hierarchical Metamaterial Composite for Synergistic Enhancement Across Thermal, Electromagnetic, and Mechanical Domains (Adv. Funct. Mater. 5/2026)

Multiscale Hierarchical Metamaterial Composites This image highlights a reinforced concrete-inspired multiscale hierarchical metamaterial composite (MHMC) that unifies radiative cooling, broadband electromagnetic absorption, and mechanical energy dissipation within a single architecture. By integrating a carbon black-based metamaterial and a porosity-graded cellulose acetate aerogel, the design visually conveys multifunctional synergy across thermal, electromagnetic, and mechanical domains, making it a compelling representation of the study's significance. More information can be found in the Research Article by Run Hu, Wonjoon Choi, and co-workers (10.1002/adfm.202520521).