Deformable hard tissue with high fatigue resistance in the hinge of bivalve Cristaria plicata

被引：44

作者：

Meng, Xiang-Sen ^{[1
]}

Zhou, Li-Chuan ^{[2
,3
]}

Liu, Lei ^{[1
]}

Zhu, Yin-Bo ^{[2
]}

Meng, Yu-Feng ^{[1
]}

Zheng, Dong-Chang ^{[2
]}

Yang, Bo ^{[1
]}

Rao, Qi-Zhi ^{[4
]}

Mao, Li-Bo ^{[1
]}

Wu, Heng-An ^{[2
]}

Yu, Shu-Hong ^{[1
,5
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci Microscale, Inst Biomimet Mat & Chem,Anhui Engn Lab Biomimet, Div Nanomat & Chem,Dept Chem,New Cornerstone Sci, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Modern Mech, CAS Ctr Excellence Complex Syst Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Peoples R China

[3] Hefei Univ Technol, Sch Mech Engn, Hefei 230009, Peoples R China

[4] Anhui Shuyan Intelligent Technol Co, Wuhu 241200, Peoples R China

[5] Southern Univ Sci & Technol, Inst Innovat Mat, Dept Mat Sci & Engn, Dept Chem, Shenzhen 518055, Peoples R China

来源：

SCIENCE | 2023年 / 380卷 / 6651期

基金：

中国国家自然科学基金;

关键词：

MATERIALS SCIENCE; HUMAN ENAMEL; NACRE; BRITTLE; BONE; MECHANISMS; BEHAVIOR; FRACTURE; FAILURE;

D O I：

10.1126/science.ade2038

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The hinge of bivalve shells can sustain hundreds of thousands of repeating opening-and-closing valve motions throughout their lifetime. We studied the hierarchical design of the mineralized tissue in the hinge of the bivalve Cristaria plicata, which endows the tissue with deformability and fatigue resistance and consequently underlies the repeating motion capability. This folding fan-shaped tissue consists of radially aligned, brittle aragonite nanowires embedded in a resilient matrix and can translate external radial loads to circumferential deformation. The hard-soft complex microstructure can suppress stress concentration within the tissue. Coherent nanotwin boundaries along the longitudinal direction of the nanowires increase their resistance to bending fracture. The unusual biomineral, which exploits the inherent properties of each component through multiscale structural design, provides insights into the evolution of antifatigue structural materials.

引用

页码：1252 / 1257

页数：6

共 52 条

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