powder synthesis powder characterisation colloidal processing sintering of ceramics atomistic simulation

1. From Atomistic and Thermodynamic Modelling to Transparent Polycrystalline Alumina and microstrcutural characterisation. 2. Atomistic Simulation in Cementitious Systems 3. Nanoparticle tracking and oxidative stress biomarkers in healthy non-smoking volunteers 4. Non-invasive continuous monitoring of the interactions between nanoparticles and aquatic microorganisms

Main research interests are powder synthesis, powder characterisation, colloidal processing, sintering of ceramics and atomistic modelling of surfaces and interfaces.. Mission - controlling the interaction of surfaces and interfaces ubiquitous in powder technology. From solid-liquid interfaces found during precipitation or powder suspensions to grain boundaries in sintered ceramics. The interfacial interactions are investigated at an atomistic level using classical energy minimisation and molecular dynamic simulations as well as thermodynamic speciation in solution. The interactions between particles in suspension is a strong theme – be it in de-agglomeration of nanosized powders, the dispersion of cementitious materials or self-assembly during precipitation. Using either inorganic or organic additives the interfacial properties and interactions between particles and development of microstructures can be modified and controlled. This knowledge and control of interfacial interactions has lead to controlled morphology and self-assembly of nanostructured calcite and oxalates; the more efficient dispersion of cement (new dispersants devloped in collaboration with industry); the production of transparent polycrystalline alumina; and novel nanoparticles and porous nanostructured particles for photocatalytic antibacterial applications. His interaction with industry has involved product analysis and development leading to commercially successful products such the transparent nanoceramic ink-jet paper “Instant Dry” (ILFORD SA)