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Statistical indentation techniques for hydrated nanocomposites: concrete, bone, and shale
Concrete, bone and shale have one thing in common: their load-bearing mineral phase is a hydrated nanocomposite. Yet the link between material genesis, microstructure, and mechanical performance forExpand
Materials design principles of ancient fish armour.
Knowledge of the structure-property-function relationships of dermal scales of armoured fish could enable pathways to improved bioinspired human body armour, and may provide clues to the evolutionaryExpand
Nanoscale heterogeneity promotes energy dissipation in bone.
Nanomechanical heterogeneity is expected to influence elasticity, damage, fracture and remodelling of bone. Here, the spatial distribution of nanomechanical properties of bone is quantified at theExpand
Nanogranular origins of the strength of bone.
Here, we investigate the ultrastructural origins of the strength of bone, which is critical for proper physiological function. A combination of dual nanoindentation, three-dimensional elastic-plasticExpand
Mechanics of composite elasmoid fish scale assemblies and their bioinspired analogues.
Inspired by the overlapping scales found on teleost fish, a new composite architecture explores the mechanics of materials to accommodate both flexibility and protection. These biological structuresExpand
Nanoscale morphology and indentation of individual nacre tablets from the gastropod mollusc Trochus niloticus
The inner nacreous layer of gastropod mollusc Trochus niloticus is composed of ∼95 wt% planar arrays of polygonal aragonite-based tablets (∼8 μm wide, ∼0.9 μm thick, stacked ∼40 nm apart) and ∼5 wt%Expand
A finite element model for direction-dependent mechanical response to nanoindentation of cortical bone allowing for anisotropic post-yield behavior of the tissue.
A finite element model was developed for numerical simulations of nanoindentation tests on cortical bone. The model allows for anisotropic elastic and post-yield behavior of the tissue. The materialExpand
Direct Measurement of Glycosaminoglycan Intermolecular Interactions via High-Resolution Force Spectroscopy
Intermolecular repulsion forces between negatively charged glycosaminoglycan (CS−GAG) macromolecules are a major determinant of cartilage biomechanical properties. It is thought that theExpand
Direct quantification of the mechanical anisotropy and fracture of an individual exoskeleton layer via uniaxial compression of micropillars.
A common feature of the outer layer of protective biological exoskeletons is structural anisotropy. Here, we directly quantify the mechanical anisotropy and fracture of an individual material layerExpand
Individual cartilage aggrecan macromolecules and their constituent glycosaminoglycans visualized via atomic force microscopy.
Atomic force microscopy was used in ambient conditions to directly image dense and sparse monolayers of bovine fetal epiphyseal and mature nasal cartilage aggrecan macromolecules adsorbed on micaExpand