仿珍珠母新材料可“隐身”能防护

Core Viewpoint - A new biomimetic composite material inspired by nacre has been developed, showcasing unique color tunability, excellent wave transmission performance, lightweight, high strength, toughness, and outstanding impact resistance [1][2] Group 1: Material Properties - The newly developed nacre-like composite material exhibits a fracture toughness over three times that of commercial alumina ceramics and absorbs impact energy more than four times that of commercial alumina ceramics [2] - The material integrates mechanical robustness, camouflage functionality, and wave transmission capabilities, marking significant progress in multifunctional biomimetic structural materials [2] Group 2: Design Strategy - The research team introduced a dual oxide interface design strategy that enhances mechanical strength and toughness through the construction of mineral bridge structures between alumina micro-sheets [2] - The design also allows for controllable coloring by adjusting the chemical composition at the micro-sheet interfaces through solid-phase reactions [2] Group 3: Structural Inspiration - The inspiration for this research comes from the natural structure of nacre, which provides insights into achieving high mechanical strength while enabling camouflage effects in engineered materials [1][2]