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However, insufficient optical and mechanical performance causes heat accumulation and fracture under thermomechanical stress that can lead to catastrophic failure. Herein, a scalable ZrO\n                    <jats:sub>2<\/jats:sub>\n                    \u2010Al\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>3<\/jats:sub>\n                    heterostructured coating featuring anti\u2010laser ablation, thermal management, and toughness is fabricated via a facile yet effective strategy. The multiple scattering of the micro\u2010convex structure on the coating surface and the refractive index mismatching at the heterogeneous interface enhance its reflectivity to 92% (780\u20132500\u00a0nm), while the enlarged effective radiation area improves its emissivity to 0.93 (8\u201325\u00a0\u00b5m). The combination of high reflectivity and low thermal conductivity of 0.6\u00a0W\/(m\u00a0K) enables the coating to achieve a laser damage threshold of 637\u00a0W\u00a0cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    for 35 s, reducing the damage depth by 35.46% compared to a single Al\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>3<\/jats:sub>\n                    coating. Notably, the fracture toughness of the coating reaches 6.77 MPa\u00a0m\n                    <jats:sup>1\/2<\/jats:sup>\n                    due to the synergistic effects of zirconia phase transformation toughening and heterogeneous interface energy absorption. These characteristics make the ZrO\n                    <jats:sub>2<\/jats:sub>\n                    \u2010Al\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>3<\/jats:sub>\n                    heterostructured coating potential protective materials for various laser protection and thermal management applications.\n                  <\/jats:p>","DOI":"10.1002\/smll.202508424","type":"journal-article","created":{"date-parts":[[2025,10,7]],"date-time":"2025-10-07T10:22:02Z","timestamp":1759832522000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Scalable Manufactured ZrO\n                    <sub>2<\/sub>\n                    \u2010Al\n                    <sub>2<\/sub>\n                    O\n                    <sub>3<\/sub>\n                    Heterostructured Coating with High Reflectivity and Enhanced Toughness for Space Laser Protection"],"prefix":"10.1002","volume":"21","author":[{"given":"Xinrui","family":"Zhao","sequence":"first","affiliation":[{"name":"Institute for Advanced Ceramics Key Laboratory of Advanced Structure\u2010Function Integrated Materials and Green Manufacturing Technology Harbin Institute of Technology  Harbin 150080 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuqi","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute for Advanced Ceramics Key Laboratory of Advanced Structure\u2010Function Integrated Materials and Green Manufacturing Technology Harbin Institute of Technology  Harbin 150080 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yongchun","family":"Zou","sequence":"additional","affiliation":[{"name":"Institute for Advanced Ceramics Key Laboratory of Advanced Structure\u2010Function Integrated Materials and Green Manufacturing Technology Harbin Institute of Technology  Harbin 150080 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guoliang","family":"Chen","sequence":"additional","affiliation":[{"name":"Institute for Advanced Ceramics Key Laboratory of Advanced Structure\u2010Function Integrated Materials and Green Manufacturing Technology Harbin Institute of Technology  Harbin 150080 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiyun","family":"Ye","sequence":"additional","affiliation":[{"name":"Institute for Advanced Ceramics Key Laboratory of Advanced Structure\u2010Function Integrated Materials and Green Manufacturing Technology Harbin Institute of Technology  Harbin 150080 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianzheng","family":"Cui","sequence":"additional","affiliation":[{"name":"Department of Astronautic Science and Mechanics Harbin Institute of Technology  Harbin 150080 P. R. 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dechang","family":"Jia","sequence":"additional","affiliation":[{"name":"Institute for Advanced Ceramics Key Laboratory of Advanced Structure\u2010Function Integrated Materials and Green Manufacturing Technology Harbin Institute of Technology  Harbin 150080 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu","family":"Zhou","sequence":"additional","affiliation":[{"name":"Institute for Advanced Ceramics Key Laboratory of Advanced Structure\u2010Function Integrated Materials and Green Manufacturing Technology Harbin Institute of Technology  Harbin 150080 P. R. 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