Published in Nature Communications on October 30, the work by Tan Chaolin's team at Soochow University, in collaboration with Singapore's A*STAR (SIMTech/IAIC), Shanghai Jiao Tong University, Dongguan University of Technology, and City University of Hong Kong, combines green-laser directed energy deposition (GL-DED) with nano-TiC-embedded composite AA7075 powder to overcome two major challenges of high-strength aluminum alloys: low infrared laser absorptivity and high hot-cracking susceptibility. The green laser provides better energy coupling (stable forming at only 600–900 W), while nano-TiC suppresses solidification cracking and promotes fully equiaxed grains via heterogeneous nucleation. After T73 heat treatment, ultra-high-density nano-η′ precipitates and GP zones form, yielding a tensile yield strength of about 600 MPa (591±22 MPa)—higher than wrought AA7075 and nearly all L-DED aluminum alloys reported to date. Implications for the powder sector: the printability of high-strength aluminum alloy powders is shifting from purely compositional adjustment toward a new co-design pathway of "powder modification + laser wavelength," and nano-ceramic composite powders are expected to become a new growth category for high-strength aluminum printing.