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
Tailoring and Understanding the Mechanical Properties of Nanoparticle-Shelled Bubbles
Teresa Brugarolas,Daniel Gianola,Lei Zhang,Gregory M Campbell,John L. Bassani,Gang Feng,Daeyeon Lee +6 more
TL;DR: This paper presents a method to tailor the mechanical properties and response of highly monodisperse nanoparticle-shelled bubbles using thermal treatment, and shows that the stiffness and strength of bubbles are enhanced significantly, as much as 12 and 14 times that of the as-assembled bubbles, respectively, via thermal treatment.
Journal ArticleDOI
Atomic Layer Deposition of Inorganic Thin Films on 3D Polymer Nanonetworks
TL;DR: In this article, a review of the successful cases of conformal deposition of inorganic thin films on 3D polymer nanonetworks using thermal ALD or plasma-enhanced ALD at temperatures below 200 °C is presented.
Journal ArticleDOI
Multiscale ceramic components from preceramic polymers by hybridization of vat polymerization-based technologies
Johanna Schmidt,Laura Brigo,Alessandro Gandin,Martin Schwentenwein,Paolo Colombo,Paolo Colombo,Giovanna Brusatin +6 more
TL;DR: In this article, a novel approach to fabricate ceramic structures at multiple scales in a single component, based on the hybridization of additive manufacturing technologies, was developed by combining 3D macro-stereolithography (Digital Light Processing, DLP) with two-photon lithography (2PL), to produce cm-sized sample geometries with sub-μm surface features.
Journal ArticleDOI
Another stretching-dominated micro-architectured material, shellular
Seung Chul Han,Ki-Ju Kang +1 more
TL;DR: In this article, a high-precision technique is used for forming a template that can be used to fabricate the TPMS Shellular, where polymer beads are arranged in a regular pattern, resembling a crystalline structure and then naturally transformed into a TPMS shape of the template by means of a special chemical process, named Han's treatment.
Journal ArticleDOI
Pseudo-ductile fracture of 3D printed alumina triply periodic minimal surface structures
TL;DR: In this article, the fracture behavior and the fracture mode transition of ceramic triply periodic minimal surface (TPMS) structures were investigated, and they showed that with appropriate thickness gradients, graded structures exhibit significant increase of energy absorption without a decrease of fracture strength compared to their non-graded counterparts.
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.