Andrew Horsfield joined the Materials Department at Imperial College in 2007 as an RCUK Fellow, and is also an honorary Research Fellow at the London Centre for Nanotechnology. Previous to this he was the Senior Research Fellow in charge of the theory core project for the IRC in Nanotechnology at UCL where he spearheaded the development of a novel modelling technique for understanding non-adiabatic processes at the nanoscale (Correlated Electron-Ion Molecular Dynamics). Together with Prof. Marshall Stoneham and students he also provided a theoretical demonstration of the physical soundness of a controversial vibrational theory olfaction proposed by Luca Turin.
Dr Horsfield specializes in modeling electron behaviour in nanoscale systems, including at the interface between biology and physics. His introduction to biological problems was made possible by a Career Development Fellowship from the Institute of Physics which he received while working for the Fujitsu European Centre for Information Technology, where his primary work was on the dynamics of point defects in semiconductors. His interest in linear scaling electronic structure methods and the development of two electronic structure codes (Plato and OXON) occurred while working in the Department of Materials at Oxford University with Prof. David Pettifor and Prof. Adrian Sutton. This built on his experience with tight binding while studying liquid silicon with Prof. Paulette Clancy at Cornell University as a PDRA and Junior Lecturer. He obtained his MSc and PhD in physics at Cornell University with Prof. Neil Ashcroft. His first-class BA in physics was obtained from Oxford University. He is a long-standing member of the Institute of Physics Computational Physics Committee.
This figure shows two relaxed self-interstitial atom configurations of bcc Mo ((a) <111> dumbbell and (b) <110> dumbbell) and the corresponding electronic charge-density deformation maps. The maps are on the (110) plane, and are calculated by subtracting the final charge distributions from atomic charge densities.