Coherent x-ray diffraction imaging techniques are nowadays reaching sufficient maturity to be applied to increasing complex scientific cases. A key point has been the progressive improvement of the reconstruction algorithms and the experimental setup stability and capabilities in the last years. Up to quite recently, these techniques were confined to be exploited by the expert users in the coherence community, but this is rapidly evolving and the field is welcoming new communities interested in applying these techniques to address a variety of open questions, particularly in the field of Materials Science. Furthermore, the advent of Diffraction Limited Storage Rings will bring new possibilities to perform coherent diffraction imaging on materials during in-situ and in operando conditions, particularly in the two areas where it excels: strain and structural disorder mapping of materials, and imaging of domains (for instance, during phase transitions).
Here, we present recent examples of strain imaging by Bragg coherent diffraction imaging (Bragg CDI) at beamline CRISTAL, at Synchrotron SOLEIL: strain mapping in semiconductor heterogeneous nanostructures; and study of the relationship between strain and catalytic sites in nanocatalyst particles performed in operando and in situ conditions.