A research team at Hefei University of Technology has successfully fabricated copper powders with high laser absorptivity using a biomimetic surface dealloying technique, addressing the critical challenge of low energy coupling efficiency for highly reflective metals in additive manufacturing. For upstream applications, this technique constructs hierarchical nanoporous structures on copper powder surfaces via chemical dealloying, significantly enhancing near-infrared laser absorptivity, providing a scalable and cost-effective process path for modifying copper and copper alloy powders, and potentially promoting standardized production of highly reflective metal powders. For downstream uses, the technique enables continuous single-track printing with low energy input and supports high-volume fraction nanoparticle reinforcement, greatly expanding additive manufacturing applications of copper-based materials in fields such as thermal management and electronic devices.