X-ray ptychographic microscopy combines the advantages of raster scanning X-ray
microscopy with the more recently developed techniques of coherent diffraction imaging. It is …

Solid catalysts are the workhorses that convert feedstock molecules into fuels, chemicals
and materials. Solid catalysts are highly complex, porous, multi-elemental and often …

The morphological characterization of aggregates or agglomerates using image analysis is
an increasingly active area of research, whether in the chemical, environmental or civil …

Understanding morphological changes of nanoparticles in solution is essential to tailor the
functionality of devices used in energy generation and storage. However, we lack …

Hierarchical structures appear often in life and materials sciences, and their characterization
profits greatly from imaging methods that allow seamless probing of various length scales …

The study of catalytic materials is commonly approached from three standpoints; catalyst
preparation, catalyst characterisation and ultimately the evaluation of catalytic performance …

Tomographic imaging of catalysts allows non‐invasive investigation of structural features
and chemical properties by combining large fields of view, high spatial resolution, and the …

Ptychographic X-ray microscopy is an ideal tool to observe chemical processes under in situ
conditions. Chemical reactors, however, are often thicker than the depth of field, limiting the …

We present the extension of ptychography for three-dimensional object reconstruction in a
tomography setting. We describe the alternating direction method of multipliers (ADMM) as a …

A new closed cell is presented for in situ X-ray ptychography which allows studies under gas
flow and at elevated temperature. In order to gain complementary information by …