Nanograded artificial nacre with efficient energy dissipation

Meng, Yu-Feng1; Yu, Cheng-Xin2,3; Zhou, Li-Chuan4; Shang, Li-Mei1; Yang, Bo1; Wang, Qing-Yue1; Meng, Xiang-Sen1; Mao, Li-Bo1; Yu, Shu-Hong1,5

2023-11-13

10.1016/j.xinn.2023.100505

INNOVATION   Impact Factor & Quartile

2666-6758

The renowned mechanical performance of biological ceramics can be attributed to their hierarchical structures, wherein structural features at the nanoscale play a crucial role. However, nanoscale features, such as nanogradients, have rarely been incorporated in biomimetic ceramics because of the challenges in simultaneously controlling the material structure at multiple length scales. Here, we report the fabrication of arti-ficial nacre with graphene oxide nanogradients in its aragonite platelets through a matrix-directed mineralization method. The gradients are formed via the spontaneous accumulation of graphene oxide nanosheets on the surface of the platelets during the mineralization process, which then induces a lateral residual stress field in the platelets. Nanoindenta-tion tests and mercury intrusion porosimetry demonstrate that the mate-rial's energy dissipation is enhanced both intrinsically and extrinsically through the compressive stress near the platelet surface. The energy dissipation density reaches 0.159 +/- 0.007 nJ/mm(3), and the toughness amplification is superior to that of the most advanced ceramics. Numer-ical simulations also agree with the finding that the stress field notably contributes to the overall energy dissipation. This work demonstrates that the energy dissipation of biomimetic ceramics can be further increased by integrating design principles spanning multiple scales. This strategy can be readily extended to the combinations of other struc-tural models for the design and fabrication of structural ceramics with customized and optimized performance.

ESCI

English

Corresponding

Strategic Priority Research Program of the Chinese Academy of Sciences[XDB 0470000] ; National Key Research and Development Program of China["2018YFE0202201","2021YFA0715700"] ; National Natural Science Foun-dation of China["22305240","22293044"] ; Students' Innovation and Entrepreneurship Foundation of USTC[XY2022S02] ; Double First-Class University Construction Fund from USTC[YD2060002037]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001079899200001

CELL PRESS

Web of Science

1.Univ Sci & Technol China, Inst Biomimet Mat & Chem, Hefei Natl Res Ctr Phys Sci Microscale,Div Nanomat, Dept Chem,New Cornerstone Sci Lab,Anhui Engn Lab B, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, CAS Ctr Excellence Nanosci,Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Anhui, Peoples R China
3.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China
4.Hefei Univ Technol, Sch Mech Engn, Hefei 230009, Peoples R China
5.Southern Univ Sci & Technol, Inst Innovat Mat, Dept Mat Sci & Engn, Dept Chem, Shenzhen 518055, Peoples R China

Meng, Yu-Feng,Yu, Cheng-Xin,Zhou, Li-Chuan,et al. Nanograded artificial nacre with efficient energy dissipation[J]. INNOVATION,2023,4(6).

Meng, Yu-Feng.,Yu, Cheng-Xin.,Zhou, Li-Chuan.,Shang, Li-Mei.,Yang, Bo.,...&Yu, Shu-Hong.(2023).Nanograded artificial nacre with efficient energy dissipation.INNOVATION,4(6).

Meng, Yu-Feng,et al."Nanograded artificial nacre with efficient energy dissipation".INNOVATION 4.6(2023).