Abstract
Paul Callaghan will be remembered internationally for many seminal contributions to the foundations of magnetic resonance imaging as applied to the rheological analysis of a series of real world materials – paints, gels, polymer solutions – and at home in New Zealand as the leading physical scientist of his day, who became a familiar science communicator through popular books, a radio programme and the promotion of high technology as a part of the New Zealand economy. Apart from his time as a research student in Oxford (1970–75) and short stays abroad, Paul undertook all his research in New Zealand, and was a passionate and effective advocate for New Zealand science. His direct and continuing legacy for condensed matter science in New Zealand was his leadership in the foundation in 2002 of the multi-university MacDiarmid Institute devoted to research in advanced materials and nanotechnology, which he led through its first five years and into its second phase. In later life he was the founder of Magritek, a company manufacturing the specialist magnets needed for resonance imaging and spectroscopy.
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