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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Proceedings ArticleDOI
3D manufacturing of micro and nano-architected materials
TL;DR: Here the authors present a number of strategies for the advanced manufacturing, characterization and optimal design of a variety of lightweight architected materials with unique combinations of mechanical properties (stiffness, strength, damping coefficient…).
Dissertation
Ceramic nanostructured catalysts
TL;DR: In this paper, a single-step hydrothermal method was used to synthesize discrete and well-defined nanostructured materials (ceria and titanate) with different morphologies (particles, rods and cubes), and their catalytic activity was assessed using CO oxidation as a model reaction as a function of their physical and chemical properties.
Journal ArticleDOI
Fabrication of Non-Uniform Nanolattices with Spatially Varying Geometry and Material Composition
TL;DR: In this article, the fabrication of non-uniform 3D nanolattices using phase shift lithography and atomic layer deposition has been investigated, where the lattice geometry and material composition of each individual layer can be tailored to create arbitrary material properties.
Journal ArticleDOI
Fabrication and Compressive Behavior of a Micro-Lattice Composite by High Resolution DLP Stereolithography
Chow Shing Shin,Yu Chia Chang +1 more
TL;DR: In this article, a low-cost high resolution micro-stereolithographic system has been developed in this work based on a commercial digital light processing (DLP) projector.
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.