Journal ArticleDOI
Fabrication and deformation of three-dimensional hollow ceramic nanostructures
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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
Reexamining the mechanical property space of three-dimensional lattice architectures
Lucas R. Meza,Gregory P. Phlipot,Carlos M. Portela,Alessandro Maggi,Lauren C. Montemayor,Andre Comella,Dennis M. Kochmann,Dennis M. Kochmann,Julia R. Greer +8 more
TL;DR: In this paper, a simplified analytical model for solid-beam lattices was proposed to provide insight into the mechanisms behind their observed stiffness, and different hollow-beam parameters that give rise to their aberrant properties.
Journal ArticleDOI
Carbon nanotube, graphene and boron nitride nanotube reinforced bioactive ceramics for bone repair.
TL;DR: This review presents a comprehensive overview of the developments and applications of LDNs in bioactive ceramics, including the newly-developed fabrication methods for LDNs/ceramic composites, the reinforcing mechanisms and the in vitro and in vivo performance ofLDNs.
Journal ArticleDOI
Low-Density Open Cellular Sponges as Functional Materials.
TL;DR: Bottom-up and top-down chemical and engineering methods for the preparation of sponges are a major focus of this Review, with an emphasis on carbon and polymer materials.
Journal ArticleDOI
Ultralight, Soft Polymer Sponges by Self-Assembly of Short Electrospun Fibers in Colloidal Dispersions
Gaigai Duan,Shaohua Jiang,Valérie Jérôme,Joachim H. Wendorff,Amir Fathi,Jacqueline S. Uhm,Volker Altstädt,Markus M. Herling,Josef Breu,Ruth Freitag,Seema Agarwal,Andreas Greiner +11 more
TL;DR: In contrast to many other highly porous materials, these sponges show extremely low densities (<3 mg cm−3) in combination with low specific surface areas, giving basis for soft and reversibly compressible materials and to hydrophobic behavior as discussed by the authors.
Journal ArticleDOI
Ultra-strong architected Cu meso-lattices
X. Wendy Gu,Julia R. Greer +1 more
TL;DR: In this article, a 3D solid Cu octet meso-lattices with characteristic features on the micron-scale were fabricated and mechanically tested under uniaxial compression.
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.
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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.