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
A silicon carbide lollipop
Journal ArticleDOI
The Gibson-Ashby model for additively manufactured metal lattice materials: Its theoretical basis, limitations and new insights from remedies
TL;DR: In this paper , the applicability of the G-A model to AM-ed metal lattice materials was evaluated and the fundamental disconnections between them were revealed, leading to new insights obtained from these remedies into the design of strong and stiff metal lattices.
ReportDOI
Rapid Prototyping across the Spectrum: RF to Optical 3D Electromagnetic Structures
TL;DR: In this article, a systematic review of the types of electromagnetic (EM) phenomena and applications, design methodology and various 3D rapid prototyping techniques used for such fabrication is presented.
Book ChapterDOI
Hydrophobic/Superhydrophobic Concrete
TL;DR: In this article, the authors demonstrate that hydrophobic/superhydrophobic concrete can be applied for water repelling, freezing-thawing resistance and self-cleaning requirements, with the potential to enhance the durability and sustainability of infrastructures.
Proceedings ArticleDOI
Plasma-enhanced atomic layer deposition for plasmonic TiN
Lauren M. Otto,Aaron Hammack,Shaul Aloni,D. Frank Ogletree,Deirdre L. Olynick,Scott Dhuey,Bethanie J. H. Stadler,Adam M. Schwartzberg +7 more
TL;DR: In this article, a low temperature plasma-enhanced atomic layer deposition (PE-ALD) of a promising plasmonic synthetic metal was presented, which allows conformal deposition on a variety of substrates with consistent material properties.
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.