X-rays can be produced using so-called X-ray tubes. We have several X-ray units in our laboratory and we use them on a daily basis to characterize the structure of various samples. We also travel to synchrotron sources (such as DESY in Hamburg or ESRF in Grenoble) to perform advanced X-ray scattering experiments. In contrast to the X-ray tubes, the synchrotron radiation has tunable energy, much higher coherence and ability to focus the beam to submicron size. These properties allow us to perform state-of-the-art experiments and develop a deep understanding of the structure and dynamics of our samples. More specifically, we use X-ray photon correlation spectroscopy (XPCS), nanofocused X-ray diffraction, grazing incidence small-angle and wide-angle X-ray scattering (GISAXS and GIWAXS), X-ray reflectivity (XRR), and many other techniques to characterize novel materials that we fabricate in our group or obtain from our collaborators
Figure 2: (left) X-ray diffraction studies of light-induced phase separation in mixed lead-halide perovskites at the Coherence Applications beamline P10 at DESY (Hamburg) |