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X-Ray Phase-Contrast Imaging with Nanoradian Angular Resolution

This paper sets the new sensitivity record for x-ray phase methods, by demonstrating a sensitivity more than one order of magnitude higher than previous techniques. It also provides an algorithm that enables the quantitative extraction of phase and absorption from the sample. Both method and algorithm have been validated at two different synchrotrons under very different conditions (e.g. very high and very low x-ray energy), demonstrating wide applicability. This opens the way to scientific applications previously unavailable (e.g. we are using it to track tumour invasion down to single cells), which explains its publication in one of physics’s flagship journals.