Journal ArticleDOI
Fabrication and deformation of three-dimensional hollow ceramic nanostructures
TLDR
The fabrication of hollow ceramic scaffolds that mimic the length scales and hierarchy of biological materials are reported, suggesting that the hierarchical design principles offered by hard biological organisms can be applied to create damage-tolerant lightweight engineering materials.Abstract:
Creating lightweight, mechanically robust materials has long
been an engineering pursuit. Many siliceous skeleton species—
such as diatoms, sea sponges and radiolarians—have remarkably
high strengths when compared with man-made materials
of the same composition, yet are able to remain lightweight
and porous1–7. It has been suggested that these properties
arise from the hierarchical arrangement of different structural
elements at their relevant length scales8,9. Here, we report the
fabrication of hollow ceramic scaffolds that mimic the length
scales and hierarchy of biological materials. The constituent
solids attain tensile strengths of 1.75 GPa without failure
even after multiple deformation cycles, as revealed by in situ
nanomechanical experiments and finite-element analysis. We
discuss the high strength and lack of failure in terms of stress
concentrators at surface imperfections and of local stresses
within the microstructural landscape. Our findings suggest that
the hierarchical design principles offered by hard biological organisms
can be applied to create damage-tolerant lightweight
engineering materials.read more
Citations
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Journal ArticleDOI
Large deformation response of additively-manufactured FCC metamaterials: From octet truss lattices towards continuous shell mesostructures
TL;DR: In this article, the authors analyzed the large strain compression response of different metamaterial architectures through finite element analysis and compression experiments on additively-manufactured stainless steel specimens, and showed that hollow rhombic dodecahedral mesostructures could provide nearly twice the strength and energy absorption of the conventional octet truss.
Journal ArticleDOI
Lightweight, flaw-tolerant, and ultrastrong nanoarchitected carbon
TL;DR: The combination of high specific strength, low density, and extensive deformability before failure lends such nanoarchitected carbon to being a particularly promising candidate for applications under harsh thermomechanical environments.
Journal ArticleDOI
3D Printing of Bioinspired Liquid Superrepellent Structures.
Xiaojiang Liu,Hongcheng Gu,Min Wang,Xin Du,Bingbing Gao,Abdelrahman Elbaz,Liangdong Sun,Julong Liao,Pengfeng Xiao,Zhongze Gu +9 more
TL;DR: Triply re-entrant structures, possessing superrepellence to water and various organic liquids, are fabricated via two-photon polymerization based 3D printing technology and can find potential applications in electronic devices, gas sensors, microchemical/physical reactors, high-throughput biological sensors, and optical displays.
Journal ArticleDOI
Highly-stretchable 3D-architected Mechanical Metamaterials.
Yanhui Jiang,Qiming Wang +1 more
TL;DR: A class of mechanical metamaterials that not only features 3D free-form lattice architectures but also poses ultrahigh reversible stretchability (strain) 4 times higher than that of the existing counterparts with the similar complexity of 3D architectures is reported.
Journal ArticleDOI
Designing complex architectured materials with generative adversarial networks.
Yunwei Mao,Qi He,Xuanhe Zhao +2 more
TL;DR: This work presents an experience-free and systematic approach for the design of complex architectured materials with generative adversarial networks that approach the Hashin-Shtrikman upper bounds on isotropic elastic stiffness with porosities from 0.05 to 0.75.
References
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Book
Cellular Solids: Structure and Properties
Lorna J. Gibson,Michael F. Ashby +1 more
TL;DR: The linear elasticity of anisotropic cellular solids is studied in this article. But the authors focus on the design of sandwich panels with foam cores and do not consider the properties of the materials.
Book
Introduction to Ceramics
TL;DR: In this paper, the authors present a model for the development of the MICROSTRUCTURE in CERAMICS based on phase transformation, glass formation and glass-Ceramics.
MonographDOI
Mechanical Behavior of Materials
TL;DR: A balanced mechanics-materials approach and coverage of the latest developments in biomaterials and electronic materials, the new edition of this popular text is the most thorough and modern book available for upper-level undergraduate courses on the mechanical behavior of materials as discussed by the authors.
Journal ArticleDOI
THE MATERIAL BONE: Structure-Mechanical Function Relations
S. Weiner,Hanoch Daniel Wagner +1 more
TL;DR: The structure-mechanical relations at each of the hierarchical levels of organization are reviewed, highlighting wherever possible both underlying strategies and gaps in the authors' knowledge.