Professor David John Hugh Cockayne FRS FInstPhys (19 March 1942 – 22 December 2010) was a professor in the materials science department of the University of Oxford. He was an electron microscopist who played an important role in the development of weak-beam transmission electron microscopy (TEM), and in the application of high resolution TEM to diamond, fullerenes and semiconductors.
- Guy Cox (1 February 2011). "Career dedicated to the small picture". The Sydney Morning Herald.
- Guardian obituary 2 March 2011 
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