David Cockayne

David Cockayne
Born	David John Hugh Cockayne 19 March 1942
Died	22 December 2010 (aged 68)
Fields	Materials Science
Alma mater	University of Melbourne (MSc) University of Oxford (DPhil)
Thesis	Electron microscope images of defects in crystal lattices (1970)
Known for	work on quantum dots[1] weak beam technique[2][3] work on C70 fullerene[4]
Notable awards	FRS (1999)[5] FInstP

David John Hugh Cockayne FRS^[5] FInstP (19 March 1942 – 22 December 2010) was a Professor in the Department of Materials at the University of Oxford.^[6][7]

Career and research

Cockayne 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.^{[8] [9][10]}

Education

Cockayne was educated at the University of Melbourne^[8] and the University of Oxford where he was awarded a Doctor of Philosophy degree in 1970 for research into crystal lattices using electron microscopy.^[11]

Awards and honours

Cockayne was elected a Fellow of the Royal Society (FRS) in 1997^[5] and the Institute of Physics (FInstP). His certificate of election to the Royal Society reads:

“

Distinguished for his contributions to the development of electron microscopy and its applications to Materials Science. He developed the theory, and with Ray the experimental procedures for the "weak beam" technique, which improved by an order of magnitude, to 1.5nm, the resolution at which complex lattice defect geometries could be studied. The technique has led to important advances in understanding of the structure and properties of defects, and is now a routine tool. Cockayne's papers in this field are classic. He applied the technique inter alia to measure accurate values of stacking fault energies, demonstrated unambiguously for the first time that dislocations in semiconductors are dissociated, whether stationary or gliding, and elucidated the structure and positions of misfit dislocations in strained layer superlattices. He has made important contributions to the interpretation of lattice fringes. Following earlier work by Grigson, with McKenzie he developed a powerful electron diffraction technique for determining radial distribution functions from small areas of amorphous materials, collecting only elastically scattered electrons, transforming the method into a precision tool giving nearest neighbour distances accurate to 0.01A. Applications include the demonstration of the existence of the amorphous form of tetrahedrally coordinated carbon, and the refinement of models for C60 and C70. Cockayne's work is remarkable for his deep physical insight, and his ability to apply this insight to the development of powerful and widely applicable techniques.[3]

”

References

1. Lobo, C.; Leon, R.; Marcinkevic̆ius, S.; Yang, W.; Sercel, P. C.; Liao, X. Z.; Zou, J.; Cockayne, D. J. H. (1999). "Inhibited carrier transfer in ensembles of isolated quantum dots". Physical Review B. 60 (24): 16647–16651. Bibcode:1999PhRvB..6016647L. doi:10.1103/PhysRevB.60.16647. ISSN 0163-1829.
2. Ray, I. L. F.; Crawford, R. C.; Cockayne, D. J. H. (1970). "The weak-beam technique applied to superlattice dislocations in an iron—aluminium alloy". Philosophical Magazine. 21 (173): 1027–1032. Bibcode:1970PMag...21.1027R. doi:10.1080/14786437008238488. ISSN 0031-8086.
3. "Certificate of Election EC/1999/09: Cockayne, David John Hugh". London: Royal Society. Archived from the original on 2015-07-29.
4. McKenzie, D. R.; Davis, C. A.; Cockayne, D. J. H.; Muller, D. A.; Vassallo, A. M. (1992). "The structure of the C70 molecule". Nature. 355 (6361): 622–624. Bibcode:1992Natur.355..622M. doi:10.1038/355622a0. ISSN 0028-0836.
5. Hirsch, Peter (2015). "David John Hugh Cockayne 19 March 1942 — 22 December 2010". Biographical Memoirs of Fellows of the Royal Society. Royal Society publishing. 61. doi:10.1098/rsbm.2014.0025. ISSN 0080-4606.
6. Guy Cox (1 February 2011). "Career dedicated to the small picture". The Sydney Morning Herald.
7. David Cockayne's publications indexed by the Scopus bibliographic database, a service provided by Elsevier. (subscription required)
8. "Professor David Cockayne's homepage". University of Oxford. Archived from the original on 2008-08-01.
9. "Guardian obituary 2 March 2011". The Guardian.
10. Leon, R.; Kim, Yong; Jagadish, C.; Gal, M.; Zou, J.; Cockayne, D. J. H. (1996). "Effects of interdiffusion on the luminescence of InGaAs/GaAs quantum dots". Applied Physics Letters. 69 (13): 1888. Bibcode:1996ApPhL..69.1888L. doi:10.1063/1.117467. ISSN 0003-6951.
11. Cockayne, D. J. H. (1970). Electron microscope images of defects in crystal lattices (DPhil thesis). University of Oxford. OCLC 863257418.