Skeletal High-Strength Nanoporous Copper and Metamaterials: The Hakka Tulou Design Heritage.

ABSTRACT: Nanoporous metals (NPMs) are pivotal for next-generation technologies, yet their inherent mechanical fragility has long hindered practical implementation. Drawing inspiration from the ingenious architecture of the ancient Hakka Tulou walls, a novel class of nanoporous copper (NPCu) materials-skeletal NPCu-is developed to overcome this limitation. To achieve this, we leverage the principles of solidification and dealloying in alloy design to engineer a unique two-phase precursor alloy microstructure. This microstructure comprises a strong, ductile, non-dealloyable skeletal phase (minor phase) and a readily dealloyable principal phase. Upon dealloying, the precursor transforms into skeletal NPCu, achieving exceptional yield strength (200.4 ± 15.2 MPa)-significantly surpassing that of convent

SUBMITTER: Zhong H 

PROVIDER: S-EPMC12651096 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature