I graduated in physics from the University of Exeter in 1982; then did my PhD (1986) and
PDRA (1986-88) in the University of Cambridge. My early research
work on instrumentation development for scanning transmission
electron microscopy (STEM), and the application of new techniques
including coherent nanodiffraction and energy loss spectroscopy
to the study of material structure. I was a Royal Society Research Fellow
from 1988, based in the Cavendish Laboratory Cambridge, working
on the phase problem as applied to super-resolution methods in
electron microscopy, ptychography and advanced methods of electron spectroscopy.
Here's a picture of me using the VG STEM in about 1989:
I spent 1996-9 setting up an early .com enterprise.
I held the Chair of Materials Analysis in the (then) Materials Research Institute
(now MERI)of Sheffield
Hallam University between 1999-2003, where I worked on PVD coatings, advanced lubricious coatings, glow discharge optical emission
spectroscopy, sol-gel coatings and contrast mechanisms in environmental
scanning electron microscopy (ESEM).
In July 2003 I moved to the Department of Electrical
Engineering in the University of Sheffield. I'm currently working on phase-retrieval
methods, principally Ptychography at electron, visible light and X-ray wavelengths.