38 citations · 109 across the 28 of their papers we have counts for
29 papers
Generation of high-fluence and high-intensity hard x-ray attosecond pulses at European XFEL
Ichiro Inoue, Ulrike Boesenberg, Rustam Rysov +41
By combining hard x-ray attosecond pulses from the European XFEL with total-reflection focusing x-ray optics, we generated nanofocused hard x-ray attosecond pulses with intensities…
Crystallisation kinetics of supercooled liquid palladium
Zuzanna Kostera, Christian Bressler, Przemyslaw Dziegielewski +13
In this study, we employ classical molecular dynamics (MD) simulations to investigate the crystallisation kinetics of supercooled liquid palladium and relate the results to time-re…
Understanding ultrafast x-ray 'echoes' diffracted from single crystals
Angel Rodriguez-Fernandez, Dmitry Karpov, Steven Leake +2
Multiple x-ray beams generated by interference processes in perfect crystals were imaged with a resolution of about 100nm using tele-ptychography in the diffraction direction. Thes…
XFEL Imaging Techniques for High Energy Density and Inertial Fusion Energy Research at HED-HiBEF
Alejandro Laso Garcia, Mikhail Mishchenko, Victorien Bouffetier +53
The imaging platform developed at the High Energy Density - Helmholtz International Beamline for Extreme Fields (HED-HiBEF) instrument at the European XFEL and its applications to…
Spatio-temporal migration of antiferromagnetic domain walls in Sr2IrO4
Ian Robinson, David Yang, Ross Harder +18
By laser pump-probe time-resolved coherent magnetic X-ray diffraction imaging, we have measured the migration velocity of antiferromagnetic domain walls in the Mott insulator Sr2Ir…
Depletion-Induced Interactions Modulate Nanoscale Protein Diffusion in Polymeric Crowder Solutions
Michelle Dargasz, Nimmi Das Anthuparambil, Sebastian Retzbach +26
Macromolecular crowding plays a crucial role in modulating protein dynamics in cellular and in vitro environments. Polymeric crowders such as dextran and Ficoll are known to induce…
Single-shot sorting of Mössbauer time-domain data at X-ray free-electron lasers
Miriam Gerharz, Willi Hippler, Berit Marx-Glowna +28
Mössbauer spectroscopy is widely used to study structure and dynamics of matter with remarkably high energy resolution, provided by the narrow nuclear resonance line widths. Howeve…
Probing the Linewidth of the 12.4-keV Sc Isomeric Resonance in Solids by Nuclear Forward Scattering
Peifan Liu, Miriam Gerharz, Berit Marx-Glowna +37
The Sc transition from the nuclear ground state to the 12.389-keV isomer (lifetime 0.46~s) has an ultranarrow natural linewidth $Γ_{\ind{0}}\simeq 1.4$~feV, corresponding to…
Ultrafast heat transfer in single palladium nanocrystals seen with an X-ray free-electron laser
David Yang, James Wrigley, Jack Griffiths +11
We report transient highly strained structural states in individual palladium (Pd) nanocrystals, electronically heated using an optical laser, which precede their uniform thermal e…
Ultrafast X-ray sonography reveals the spatial heterogeneity of the laser-induced magneto-structural phase transition in FeRh
Maximilian Mattern, Angel Rodriguez-Fernandez, Roman Shayduk +13
Phase transitions are governed by both intrinsic and extrinsic heterogeneities, yet capturing their spatio-temporal dynamics remains a challenge. While ultrafast techniques track p…
A pipeline for Megahertz X-ray Photon Correlation Spectroscopy on soft matter samples at the MID instrument of European XFEL
Aliaksandr Leonau, Felix Brausse, James Wrigley +27
In this paper we present the experimental protocol and data processing framework for Megahertz X-ray Photon Correlation Spectroscopy (MHz-XPCS) experiments on soft matter samples,…
Laser-induced ultrafast structural transformations in thin Fe layer revealed by time-resolved X-ray diffraction
O. Liubchenko, J. Antonowicz, K. Sokolowski-Tinten +27
The ultrafast structural response of a thin iron film to sub-ps pulsed laser-induced heating has been investigated using time-resolved X-ray diffraction in the partial melting regi…
Softness and Hydrodynamic Interactions Regulate Lipoprotein Transport in Crowded Yolk Environments
Nimmi Das Anthuparambil, Michelle Dargasz, Sonja Timmermann +27
Low-density lipoproteins (LDLs) serve as nutrient reservoirs in egg yolk for embryonic development and as promising drug carriers. Both roles critically depend on their mobility in…
MMD-Newton Method for Multi-objective Optimization
Hao Wang, Chenyu Shi, Angel E. Rodriguez-Fernandez +1
Maximum mean discrepancy (MMD) has been widely employed to measure the distance between probability distributions. In this paper, we propose using MMD to solve continuous multi-obj…
Orthogonal lattice distortions inside crystalline Si upon sub-threshold femtosecond laser-induced excitation
Angel Rodríguez-Fernández, Jan-Etienne Pudell, Roman Shayduk +18
Material processing with femtosecond lasers has attracted enormous attention because of its potential for technology and industrial applications. In parallel, time-resolved x-ray d…
Coherent X-rays reveal anomalous molecular diffusion and cage effects in crowded protein solutions
Anita Girelli, Maddalena Bin, Mariia Filianina +38
Understanding protein motion within the cell is crucial for predicting reaction rates and macromolecular transport in the cytoplasm. A key question is how crowded environments affe…
A Newton Method for Hausdorff Approximations of the Pareto Front within Multi-objective Evolutionary Algorithms
Hao Wang, Angel E. Rodriguez-Fernandez, Lourdes Uribe +3
A common goal in evolutionary multi-objective optimization is to find suitable finite-size approximations of the Pareto front of a given multi-objective optimization problem. While…
Dark-Field X-ray Microscopy for 2D and 3D imaging of Microstructural Dynamics at the European X-ray Free Electron Laser
Sara J. Irvine, Kento Katagiri, Trygve M. Ræder +26
Dark field X-ray microscopy (DXFM) can visualize microstructural distortions in bulk crystals. Using the femtosecond X-ray pulses generated by X-ray free-electron lasers (XFEL), DF…
Structural pathways for ultrafast melting of optically excited thin polycrystalline Palladium films
Jerzy Antonowicz, Adam Olczak, Klaus Sokolowski-Tinten +28
Due to its extremely short timescale, the non-equilibrium melting of metals is exceptionally difficult to probe experimentally. The knowledge of melting mechanisms is thus based ma…
Ultrafast two-colour X-ray emission spectroscopy reveals excited state landscape in a base metal dyad
Michal Nowakowski, Marina Huber-Gedert, Hossam Elgabarty +15
Effective photoinduced charge transfer makes molecular bimetallic assemblies attractive for applications as active light induced proton reduction systems. For a more sustainable fu…
Resolving molecular diffusion and aggregation of antibody proteins with megahertz X-ray free-electron laser pulses
Mario Reiser, Anita Girelli, Anastasia Ragulskaya +26
X-ray free-electron lasers (XFELs) with megahertz repetition rate can provide novel insights into structural dynamics of biological macromolecule solutions. However, very high dose…
Photoinduced structural dynamics of multiferroic TbMnO
Elsa Abreu, Matteo Savoini, Larissa Boie +17
We use time-resolved hard x-ray diffraction to investigate the structural dynamics of the multiferroic insulator TbMnO in the low temperature antiferromagnetic and ferroelectri…
Performance of a cryo-cooled crystal monochromator illuminated by hard X-rays with MHz repetition rate at the European X-ray Free-Electron Laser
I. Petrov, U. Boesenberg, V. A. Bushuev +11
We present experimental data illustrating how heat load affects the performance of a cryogenically cooled monochromator under intense X-ray Free-Electron Laser pulses. The measurem…
X-ray ptychographic topography, a new tool for strain imaging
Mariana Verezhak, Steven Van Petegem, Angel Rodriguez-Fernandez +7
Strain and defects in crystalline materials are responsible for the distinct mechanical, electric and magnetic properties of a desired material, making their study an essential tas…