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
Ductilization of Nanoporous Ceramics by Crystallinity Control
TL;DR: The emergence of metal-like plasticity through the crystallinity control in the monolithic zirconia with the vertically-aligned honeycomb-like periodic nano-pore structures fabricated using the anodizing technique offers a new opportunity for the nano-porous ceramic materials to be used in various applications, benefited from the tunable structural stability.
Journal ArticleDOI
Two‐Photon Polymerized Shape Memory Microfibers: A New Mechanical Characterization Method in Liquid
Grayson Minnick,Bahareh Tajvidi Safa,Jordan Rosenbohm,Nickolay V. Lavrik,Justin Brooks,Amir Monemian Esfahani,Alberto Samaniego,Fanben Meng,Benjamin Richter,Wei Gao,Ruiguo Yang +10 more
TL;DR: In this paper , a new experimental method is reported for testing the mechanical properties of two-photon polymerization (TPP)-printed microfibers in liquid, and the experimental method represents a significant advancement in mechanical testing of TPP fabricated structures and may help release the full potential of 3D tissue scaffolds for mechanobiological studies.
Journal ArticleDOI
Morphology influence on elastic deformation behaviour of high porous ceramics. Experimental and phenomenological model predictions
Ludovica Casnedi,Giorgio Pia +1 more
TL;DR: In this paper, a statistical estimation of characteristics lengths of structural elements has been performed in order to calculate Young's modulus by using a modified tetrakaidecahedral phenomenological model.
Journal ArticleDOI
A numerical two-scale approach for nonlinear hyperelastic beams and beam networks
TL;DR: In this article , a numerical framework for modeling hyperelastic slender trusses is proposed, which decomposes the 3D description of a slender structure into a macro-scale problem solving for the deformation of the beam center-line (based on an effective strain energy density, which depends on the stretching, bending, and torsional strains of a beam's center line) and a series of 2D microscale boundary value problems (defined over the beam cross-section).
Journal ArticleDOI
Design, material, function, and fabrication of metamaterials
TL;DR: Metamaterials are engineered materials with unusual, unique properties and advanced functionalities that are a direct consequence of their microarchitecture as mentioned in this paper , which have applications in many different areas of research and practice, including acoustic, mechanics, biomaterials and thermal engineering.
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.