The 2011 Gjønnes Medal in Electron Crystallography will be awarded to Archie Howie (Emeritus Professor, Cavendish Laboratory, University of Cambridge) and Michael Whelan (Emeritus Professor, Department of Materials, University of Oxford) for the development of the dynamical theory of diffraction contrast of electron microscope images of defects in crystals, and other major pioneering contributions to the development and application of electron microscopy, diffraction and spectroscopy of materials.

The Gjønnes Medal in Electron Crystallography recognizes an outstanding contribution to the field of electron crystallography. The award is accompanied by a certificate and funding to present an invited Keynote Lecture at the triennial International Congress of Crystallography. The award is named in honour of its first recipient, Professor Jon Gjønnes of the University of Oslo, who received the award at the XXI IUCr Congress in Osaka, in August 2008.

Archibald “Archie” Howie FRS (born 1934) is a British physicist, known for his pioneering work on the interpretation of transmission electron microscope images of crystals. Born in 1934, he attended Kirkcaldy High School and the University of Edinburgh. He received his PhD from the University of Cambridge, where he subsequently took up a permanent post. He is a fellow of Churchill College and currently President of its Senior Common Room (SCR). In 1965, with Hirsch, Whelan, Pashley and Nicholson, he published the seminal text Electron Microscopy of Thin Crystals. He was elected to the Royal Society in 1978 and awarded their Royal Medal in 1999. In 1992 he was awarded the Guthrie Medal and Prize. He was head of the Cavendish Laboratory from 1989-1997.

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