2018/07/01 by Armin Feist, Gero Storeck, Sascha Schäfer +1
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Advanced Electron Microscopy Techniques and Applications #Dynamics (music) #Electron #Electron Spin Resonance Studies #Laser-Matter Interactions and Applications #cond-mat.mes-hall
paper · pdf · doi:10.1557/mrs.2018.153
published as MRS Bulletin 43 (2018) 504-511
openalex publication_date 2018/07/01 · openalex created_date 2018/07/19 · arxiv created 2020/08/25 · arxiv updated 2020/08/26 · openalex updated_date 2026/08/05
Ultrafast measurement technology provides essential contributions to our microscopic understanding of the properties and functions of solids and nanostructures. Atomic-scale vistas with ever-growing spatial and temporal resolution are offered by methods based on short pulses of x-rays and electrons. Time-resolved electron diffraction and microscopy are among the most powerful approaches to investigate non-equilibrium structural dynamics in excited matter. In this article, we discuss recent advances in ultrafast electron imaging enabled by significant improvements in the coherence of pulsed electron beams. Specifically, we review the development and first application of Ultrafast Low-Energy Electron Diffraction (ULEED) for the study of structural dynamics at surfaces, and discuss novel opportunities of Ultrafast Transmission Electron Microscopy (UTEM) facilitated by laser-triggered field emission sources. These and further developments will render coherent electron beams an essential component in the future of ultrafast nanoscale imaging.