纳米团簇
纳米复合材料
材料科学
纳米材料
纳米技术
纳米结构
制作
量子点
聚合物
纳米尺度
复合材料
医学
病理
替代医学
作者
Qi Li,John Kulikowski,David Doan,Ottman A. Tertuliano,Charles J. Zeman,Melody M. Wang,George C. Schatz,X. Wendy Gu
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2022-11-17
卷期号:378 (6621): 768-773
被引量:43
标识
DOI:10.1126/science.abo6997
摘要
Natural materials exhibit emergent mechanical properties as a result of their nanoarchitected, nanocomposite structures with optimized hierarchy, anisotropy, and nanoporosity. Fabrication of such complex systems is currently challenging because high-quality three-dimensional (3D) nanoprinting is mostly limited to simple, homogeneous materials. We report a strategy for the rapid nanoprinting of complex structural nanocomposites using metal nanoclusters. These ultrasmall, quantum-confined nanoclusters function as highly sensitive two-photon activators and simultaneously serve as precursors for mechanical reinforcements and nanoscale porogens. Nanocomposites with complex 3D architectures are printed, as well as structures with tunable, hierarchical, and anisotropic nanoporosity. Nanocluster-polymer nanolattices exhibit high specific strength, energy absorption, deformability, and recoverability. This framework provides a generalizable, versatile approach for the use of photoactive nanomaterials in additive manufacturing of complex systems with emergent mechanical properties.
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