We explore dynamics of non-equilibrium processes occurring in materials following photo- and/or electrical-excitation. Understanding such dynamic processes are critical to develop high efficiency devices such as lasers, photovoltaics, quantum light emitters and many more.

We are interested in emerging material systems (see research themes below) including colloidal nanocrystals, two-dimensional van der Waals materials, metal-halide perovskites and ferroelectric oxides. We use state-of-the-art ultrafast experimental techniques with probes ranging from terahertz waves to free-electron x-ray lasers.

Check out picosecond x-ray scattering and spectroscopy capabilities at Sectors 7 (7-ID-C) and 11 11-ID-D at Advanced Photon Source (APS). APS provides high energy pulsed hard x-rays (tunable energy 5-30 keV, pulse-width fwhm ~80 ps) that enable stroboscopic monitoring of excitation induced structural changes (e.g., strain, disordering, etc) in materials.

Please reach out to us, if you are interested in capabilities at APS. APS is a DoE user facility where users submit beamtime proposals. The deadlines for the proposals can be found here.