A5075962699- Metal and Thin Film Mechanics
- Microstructure and mechanical properties
- Diamond and Carbon-based Materials Research
- Advanced materials and composites
- Ferroelectric and Piezoelectric Materials
- Advanced Surface Polishing Techniques
- Force Microscopy Techniques and Applications
- Acoustic Wave Resonator Technologies
- Nonlocal and gradient elasticity in micro/nano structures
- Coastal wetland ecosystem dynamics
- Advanced ceramic materials synthesis
- Advanced machining processes and optimization
- High-Velocity Impact and Material Behavior
- Geological formations and processes
- Dielectric materials and actuators
- GNSS positioning and interference
- Adhesion, Friction, and Surface Interactions
- Ionosphere and magnetosphere dynamics
- Orthopaedic implants and arthroplasty
- Fusion materials and technologies
- Microstructure and Mechanical Properties of Steels
- Bone Tissue Engineering Materials
- Osteoarthritis Treatment and Mechanisms
- Coastal and Marine Dynamics
- Fluoride Effects and Removal
CSL (United Kingdom)
2025
Queen Mary University of London
2014-2024
Universidad de Londres
2003-2016
The University of Sydney
1995-1997
University of Technology Sydney
1997
Instituto Geofísico del Perú
1977-1983
The experimental evidence for the Hall-Petch dependence of strength on inverse square-root grain size is reviewed critically. Both classic data and more recent results are considered. While can be fitted to excellently (but using two free fitting parameters each dataset), it also consistent with a simple (with one parameter dataset). There have been difficulties, recognised half-a-century, in explaining expression. A Bayesian analysis shows that strongly supports expression proposed. Since...
Abstract A major goal in materials science is to develop bioinspired functional based on the precise control of molecular building blocks across length scales. Here we report a protein-mediated mineralization process that takes advantage disorder–order interplay using elastin-like recombinamers program organic–inorganic interactions into hierarchically ordered mineralized structures. The comprise elongated apatite nanocrystals are aligned and organized microscopic prisms, which grow together...
Spherical indentation creep testing was used to examine the effect of hydration state on bone mechanical properties. Analysis data based elastic–viscoelastic correspondence principle and utilized a direct solution for finite loading-rate experimental conditions. The zero-time shear modulus computed from compliance function compared obtained via conventional analysis, an elastic unloading response. method validated using well-known polymer material under three different loading applied...
A theory for the size effect in strength of wires under torsion is reported and compared with data from thin copper wires. Critical thickness solved rigorously used to validate a useful approximation which combined slip-distance modified finite structure size. Experimental high accuracy around above elastic limit show excellent agreement theory. The results strongly imply that physical principle constraint size, whether grain or puts on allowed dislocation curvature.
Designing and fabricating multifunctional microcapsules are of considerable interest in both academic industrial research aspects. This work reports an innovative approach to fabricate composite capsules with high UV ultrasound responsive functionalities that can be used as external triggers for controlled release, yet enhanced mechanical strength make them survive a harsh environment. Needle-like TiO2 nanoparticles (NPs) were produced situ into layer-by-layer (LbL) polyelectrolyte (PE)...
Understanding the strengthening of small-scale materials and structures is one key issues in nanotechnology. Many theories exist, each addressing a small domain experimentally observed size effects invoking different mechanisms. Measurements stress–strain relationship nickel foils flexure by load–unload method provide strikingly accurate data from elastic region through yield point to high plastic strain. The show that on rate work-hardening due crystallite sample interact, whereas existing...
Methods to obtain tensile stress–strain properties of materials from a practically non-destructive indentation test are great industrial interest. Nanoindentation is good candidate. However, do this successfully, size effects must be accounted for. An effect with spherical indenters has been shown for range fcc metals relatively large grain (Spary et al 2006 Phil. Mag. 86 5581–93); the increase in yield stress being proportional inverse cube root indenter radius. Here, we investigate these...
Arthropathy of the distal articular surfaces third metacarpal (Mc3) and metatarsal (Mt3) bones in Thoroughbred racehorse (Tb) is a natural model repetitive overload arthrosis. We describe novel pathology that affects calcified cartilage (ACC) subchondral bone (SCB) which associated with hyaline degeneration. Parasagittal slices cut from palmar quadrant condyles left Mc3/Mt3 39 trained Tbs euthanized for welfare reasons were imaged by point projection microradiography, backscattered electron...
Size effects in plasticity at small length scales have been widely reported a variety of loading situations. The hardness size effect has often cited as an archetypal example. indentation was clearly demonstrated by Lim and Chaudhri [Phil. Mag. A 79 2979 (1999)] spherical experiments on copper and, subsequently, iridium Swadener et al. [J. Mech. Phys. Solids 50 681 (2002)]. They showed that large radius indenters produced stress–strain curve independent indenter with hardening coefficient...
Natural sediment flocs are fragile and highly heterogeneous aggregates of biogenic minerogenic material typically with high porosity low density. In aquatic environments dominated by fine, cohesive or mixed sediments they can dominate suspended flux. Consequently, monitoring modelling the behaviour, transport distribution is very important for many industries, maintenance waterways conservation management waterbodies. Mathematical models that predict behaviour rely on accurate assessments...
Abstract Neuron cells uptake of biodegradable and synthetic polymeric microcapsules functionalized with aggregates gold nanoparticles incorporated into their shells is demonstrated in situ. In addition to traditionally used optical microscopy, electron microscopy both for higher‐resolution imaging confirming the by focused ion beam cross‐sectioning specific Subsequently, physical methods release are compared chemical wherein laser‐induced intracellular dextran molecules cytosol hippocampal...
Abstract Depth sensing nano-indentation can be used to determine the mechanical properties of materials in situations where conventional test methods may difficult or inappropriate apply. Experimental only available small quantities, as a component composite coating on dissimilar substrate. In this paper, nano-indentaticn techniques using spherical tipped indenters and novel partial unloading technique are described from which an indentation stress-strain curve determined. These allow...
Since 2014, the European Bioanalysis Forum has organized Young Scientist Symposium, providing early-career scientists with unique development opportunities. By fostering a peer community, this initiative successfully lowered barriers to engagement in cross-company, pre-competitive interactions. 2018, symposium included Science Café roundtable, further reinforcing Forum's commitment supporting young beyond their scientific expertise by promoting broader professional development.This...