One of the great dream experiments in Science is to directly observe atomic motions as they
occur. Femtosecond electron diffraction provided the first'light'of sufficient intensity to …

Conventional solid films on certain substrates play a crucial role in various applications, for
example in flat panel displays, silicon technology, and protective coatings. Recently …

Ultrafast processes can now be studied with the combined atomic spatial resolution of
diffraction methods and the temporal resolution of femtosecond optical spectroscopy by …

Domain walls (DWs) are singularities in an ordered medium that often host exotic
phenomena such as charge ordering, insulator-metal transition, or superconductivity. The …

We have developed a compact ultrafast electron diffractometer, consisting of a laser-driven rf
photocathode that generates 3.0 MeV probe electron pulses, three-stage lens optics, and a …

High bunch charge, femtosecond, electron pulses were generated using a 95 kV electron
gun with an S-band RF rebunching cavity. Laser ponderomotive scattering in a counter …

The control of optically driven high-frequency strain waves in nanostructured systems is an
essential ingredient for the further development of nanophononics. However, broadly …

The photoinduced ring-closing reaction in diarylethene, which serves as a model system for
understanding reactive crossings through conical intersections, was directly observed with …

Recent advances in high-intensity electron and X-ray pulsed sources now make it possible
to directly observe atomic motions as they occur in barrier-crossing processes. These rare …

We apply time-resolved x-ray diffraction using ultrashort x-ray pulses from a laser-produced
plasma to probe the picosecond acoustic response of a thin laser-heated gold film …