期刊
SCIENCE
卷 354, 期 6308, 页码 107-110出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaf8991
关键词
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资金
- National Natural Science Foundation of China [21431006]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [21521001]
- National Basic Research Program of China [2014CB931800, 2013CB931800]
- Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS [2015HSC-UE007, 2015SRG-HSC038]
- Key Research Program of Frontier Sciences, CAS [QYZDJ-SSW-SLH036]
Although biomimetic designs are expected to play a key role in exploring future structural materials, facile fabrication of bulk biomimetic materials under ambient conditions remains a major challenge. Here, we describe a mesoscale assembly-and-mineralization approach inspired by the natural process in mollusks to fabricate bulk synthetic nacre that highly resembles both the chemical composition and the hierarchical structure of natural nacre. The millimeter-thick synthetic nacre consists of alternating organic layers and aragonite platelet layers (91 weight percent) and exhibits good ultimate strength and fracture toughness. This predesigned matrix-directed mineralization method represents a rational strategy for the preparation of robust composite materials with hierarchically ordered structures, where various constituents are adaptable, including brittle and heat-labile materials.
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