Locating Atoms by Observing Crystallographic Phase

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Atomic structures are determined by measuring how they scatter radiation. However half of the necessary information, the crystallographic phase, cannot be measured from the scattered intensity. For a century the only option has been to deduce the phase via the statistical analysis of thousands of intensity measurements. This project aims to develop a method to determine atomic structures from the direct observation of phase. From a handful of observations and no formal measurements, atoms can be located with picometre precision. It is predicted that this method will be direct, rapid and unequivocal, sensitive to light atoms and applicable to nanostructures, which will represent a paradigm shift in crystallography.