Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"ultrafast X-ray diffraction"”.
-
Structural dynamics of photoexcited nanolayered perovskites studied by ultrafast x-ray diffraction
… a contribution to the active research field of ultrafast structural dynamics in laser-excited nanostructures. The investigation of such dynamics is mandatory for the understanding of the various physical processes on microscopic scales in complex materials which have great potentials for …
-
Hypersound interaction studied by time-resolved inelastic light and x-ray scattering
… my contribution to the scientific field of ultrafast structural dynamics. It consists of 16 publications, about the generation, detection and coupling of coherent gigahertz longitudinal acoustic phonons, also called hypersonic waves. To generate such high frequency phonons, femtosecond near …
-
Ultrafast lattice dynamics in photoexcited nanostructures : femtosecond X-ray diffraction with optimized evaluation schemes
… of perovskite oxides. Femtosecond hard X-ray pulses were utilized to probe the evolution of atomic rearrangement directly, which is driven by ultrafast optical excitation of electrons. The physics of complex materials with a large number of degrees of freedom can be interpreted once the …
-
Hybrid nanolayer architectures for ultrafast acousto-plasmonics in soft matter
… of the generated strain is performed by ultrafast X-ray diffraction calibrated the strain in a Mica substrate, into which the hyper-sound is transduced. By simulating the X-ray data with a linear-chain-model the strain in the transducer under the excitation is derived to be Δd/d ~ 5*10‐4. …
-
Spectroscopy of Topological Materials and their Technological Applications
… physics over the decades, the techniques of x-ray and neutron spectroscopies, and an overview of current progress in modern technologies. The first part of the dissertation describes using x-ray and neutron spectroscopies as a novel probe of topology. In particular, we describe how the nesting …