Growing Living Composites with Ordered Microstructures and Exceptional Mechanical Properties
Growing Living Composites with Ordered Microstructures and Exceptional Mechanical Properties
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DOI：
10.1002/adma.202006946
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发表时间：
2021-02
影响因子：
29.4
通讯作者：
A. Xin;Yipin Su;Shengwei Feng;M. Yan;Kunhao Yu;Zhangzhengrong Feng;Kyung Hoon Lee;Lizhi Sun;Qiming Wang
中科院分区：
文献类型：
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作者：
A. Xin;Yipin Su;Shengwei Feng;M. Yan;Kunhao Yu;Zhangzhengrong Feng;Kyung Hoon Lee;Lizhi Sun;Qiming Wang
生物是设计合成材料的源源不断的灵感来源。然而，生物通常与合成材料不同，因为前者由支持其生长和再生的活细胞组成。虽然自然系统可以生长具有复杂微结构的材料，但如何利用活细胞在工程系统中生长具有预先设计微结构的材料仍然是一个难以捉摸的问题。本文报道了一种利用活细菌和3D打印材料生长具有有序微观结构的仿生矿化复合材料的尝试。仿生复合材料具有优异的比强度和断裂韧性，可与天然复合材料相媲美，具有优异的能量吸收能力，优于天然复合材料和人造复合材料。该报告为具有有序微观结构和特殊性能的3D混合合成生物材料打开了大门。
Living creatures are continuous sources of inspiration for designing synthetic materials. However, living creatures are typically different from synthetic materials because the former consist of living cells to support their growth and regeneration. Although natural systems can grow materials with sophisticated microstructures, how to harness living cells to grow materials with predesigned microstructures in engineering systems remains largely elusive. Here, an attempt to exploit living bacteria and 3D‐printed materials to grow bionic mineralized composites with ordered microstructures is reported. The bionic composites exhibit outstanding specific strength and fracture toughness, which are comparable to natural composites, and exceptional energy absorption capability superior to both natural and artificial counterparts. This report opens the door for 3D‐architectured hybrid synthetic–living materials with living ordered microstructures and exceptional properties.