Biomimetic twisted plywood structural materials  

作　　者：Si-Ming Chen Huai-Ling Gao Yin-Bo Zhu Hong-Bin Yao Li-Bo Mao Qi-Yun Song Jun Xia Zhao Pan Zhen He Heng-An Wu Shu-Hong Yu 

机构地区：[1]Division of Nanomaterials & Chemistry,Hefei National Research Center for Physical Sciences at the Microscale,CAS Center for Excellence in Nanoscience.Hefai Science Center of CAS,Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry,University of Science and Technology of China, Hefei 230026,China [2]CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modem Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China,Hefei 230027, China [3]Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions,High Magnetic Field Laboratory,Chinese Academy of Sciences, Hefei 230031.China

出　　处：《National Science Review》2018年第5期703-714,共12页国家科学评论（英文版）

基　　金：supported by the National Natural Science Foundation of China(51732011,51702310,21431006,11525211and 21761132008);the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(21521001);the Key Research Program of Frontier Sciences,CAS(QYZDJ-SSW-SLH036);the National Basic Research Program of China(2014CB931800);the Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS(2015HSC-UE007);the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22040402);the National Postdoctoral Program for Innovative Talents(BX201600139to H.-L.G.and BX201700225 to Y.-B.Z.);the China Postdoctoral Science Foundation(2017M612086 to H.-L.G.);the Fundamental Research Funds for the Central Universities(WK2060190076 to H.-L.G.and WK6030000067 to S.-M.C.);the Defense Industrial Technology Development Program(JCKY2016208B012 to H.-B.Y.)

摘　　要：Biomimetic designs based on micro/nanoscale manipulation and scalable fabrication are expected to develop new-style strong, tough structural materials. Although the mimicking of nacre-like‘brick-and-mortar' structure is well studied, many highly ordered natural architectures comprising 1D micro/nanoscale building blocks still elude imitation owing to the scarcity of efficient manipulation techniques for micro/nanostructural control in practical bulk counterparts. Herein, inspired by natural twisted plywood structures with fascinating damage tolerance, biomimetic bulk materials that closely resemble natural hierarchical structures and toughening mechanisms are successfully fabricated through a programmed and scalable bottom-up assembly strategy. By accurately engineering the arrangement of 1D mineral micro/nanofibers in biopolymer matrix on the multiscale, the resultant composites display optimal mechanical performance, superior to many natural, biomimetic and engineering materials. The design strategy allows for precise micro/nanostructural control at the macroscopic 3D level and can be easily extended to other materials systems, opening up an avenue for many more micro/nanofiber-based biomimetic designs.Biomimetic designs based on micro/nanoscale manipulation and scalable fabrication are expected to develop new-style strong, tough structural materials. Although the mimicking of nacre-like‘brick-and-mortar' structure is well studied, many highly ordered natural architectures comprising 1D micro/nanoscale building blocks still elude imitation owing to the scarcity of efficient manipulation techniques for micro/nanostructural control in practical bulk counterparts. Herein, inspired by natural twisted plywood structures with fascinating damage tolerance, biomimetic bulk materials that closely resemble natural hierarchical structures and toughening mechanisms are successfully fabricated through a programmed and scalable bottom-up assembly strategy. By accurately engineering the arrangement of 1D mineral micro/nanofibers in biopolymer matrix on the multiscale, the resultant composites display optimal mechanical performance, superior to many natural, biomimetic and engineering materials. The design strategy allows for precise micro/nanostructural control at the macroscopic 3D level and can be easily extended to other materials systems, opening up an avenue for many more micro/nanofiber-based biomimetic designs.

关 键 词：BIOMIMETIC DESIGNS micro/nanoscale building BLOCKS TWISTED PLYWOOD structures damage tolerance BIOMIMETIC bulk materials TOUGHENING mechanisms 

分 类 号：N[自然科学总论]