ISCR 2023 conferences - Vincent Favre-Nicolin

High resolution imaging with coherent X-rays

The Rennes Institute of Chemical Sciences (ISCR) is pleased to welcome in Rennes Vincent Favre-Nicolin, ESRF (The European Synchrotron Radiation Facility), France.

The use of coherent X-rays for imaging has been steadily increasing for the past 25 years, from phase contrast imaging to coherent diffraction and ptychography experiments, resulting in two and three-dimensional material inspection with a spatial resolution down to about 10 nanometers. This progress is now enhanced by the ESRF-EBS upgrade, with an improved spatial and temporal resolution.

He will present the various techniques which can be used for standard small-angle imaging, yielding the sample's electronic density, with applications from brain imaging to fuel cells, as well as those in the Bragg geometry, giving access to strain information, e.g. for semi-conductor nano-structures or catalysts.

Finally, I will show how algorithms and data processing have improved during the last few years, providing a more robust data analysis which can be performed with limited supervision or hand-tuning, and allowing a larger community of users to benefit from coherent imaging techniques without needing extended knowledge about the reconstruction techniques.

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  • Carmelo Prestipino, Univ Rennes, ISCR-CNRS UMR 6226, F-35000 Rennes, France
    carmelo [dot] prestipinoatuniv-rennes [dot] fr