144 citations · 417 across the 14 of their papers we have counts for
14 papers
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…
Electric Field Driven Domain Wall Dynamics in BaTiO3 Nanoparticles
Jialun Liu, David Yang, Ana F. Suzana +2
We report a detailed investigation into the response of single BaTiO3 (BTO) nanocrystals under applied electric fields (E-field) using Bragg Coherent Diffraction Imaging (BCDI). Ou…
Variable-wavelength quick scanning nano-focused X-ray microscopy for in situ strain and tilt mapping
Marie-ingrid Richard, Thomas W Cornelius, Florian Lauraux +7
Compression of micro-pillars is followed in situ by a quick nano-focused X-ray scanning microscopy technique combined with three-dimensional reciprocal space mapping. Compared to o…
Imaging the Breathing of a Platinum Nanoparticle in Electrochemical Environment
Clément Atlan, Corentin Chatelier, Maxime Dupraz +9
Surface strain is widely used in gas phase catalysis and electrocatalysis to control the binding energies of adsorbates on metal surfaces. However, or strain…
A convolutional neural network for defect classification in Bragg coherent X-ray diffraction
Bruce Lim, Ewen Bellec, Maxime Dupraz +8
Coherent diffraction imaging enables the imaging of individual defects, such as dislocations or stacking faults, in materials.These defects and their surrounding elastic strain fie…
Bragg Coherent Imaging of nanoprecipitates: role of superstructure reflections
Maxime Dupraz, Steven J. Leake, Marie-Ingrid Richard
Coherent precipitation of ordered phases is responsible for providing exceptional high temperature mechanical properties in a wide range of compositionally complex alloys (CCAs). O…
PyNX: high performance computing toolkit for coherent X-ray imaging based on operators
Vincent Favre-Nicolin, Gaétan Girard, Steven Leake +5
The open-source PyNX toolkit [Favre-Nicolin et al (2011) arXiv:1010.2641, Mandula et al (2016)] has been extended to provide tools for coherent X-ray imaging data analysis and simu…
Evidence of Charge Density Wave transverse pinning by x-ray micro-diffraction
E. Bellec, I. Gonzalez-Vallejo, V. L. R. Jacques +5
Incommensurate charge density waves (CDW) have the extraordinary ability to display non-Ohmic behavior when submitted to an external field. The mechanism leading to this non trivia…
Free log-likelihood as an unbiased metric for coherent diffraction imaging
Vincent Favre-Nicolin, Steven Leake, Yuriy Chushkin
Coherent Diffraction Imaging (CDI), a technique where an object is reconstructed from a single (2D or 3D) diffraction pattern, recovers the lost diffraction phases without a priori…
Hard X-ray multi-projection imaging for single-shot approaches
P. Villanueva-Perez, B. Pedrini, R. Mokso +7
Obtaining 3D information from a single X-ray exposure at high-brilliance sources, such as X-ray free-electron lasers (XFELs) [1] or diffraction-limited storage rings [2], allows th…
Domain Wall Orientations in Ferroelectric Superlattices Probed with Synchrotron X-Ray Diffraction
Marios Hadjimichael, Edoardo Zatterin, Stéphanie Fernandez-Peña +2
Ferroelectric domains in PbTiO/SrTiO superlattices were studied using synchrotron X-ray diffraction. Macroscopic measurements revealed a change in the domain wall orientati…
Chemistry and structure of homoepitaxial SrTiO films and their influence on oxide-heterostructure interfaces
M. L. Reinle-Schmitt, C. Cancellieri, A. Cavallaro +4
The properties of single-crystal SrTiO substrates and homoepitaxial SrTiO films grown by pulsed laser deposition have been compared, in order to understand the loss of…
Structural Examination of Au/Ge(001) by Surface X-Ray Diffraction and Scanning Tunneling Microscopy
S. Meyer, T. Umbach, C. Blumenstein +7
The one-dimensional reconstruction of Au/Ge(001) was investigated by means of autocorrelation functions from surface x-ray diffraction (SXRD) and scanning tunneling microscopy (STM…
Evolution of the interfacial structure of LaAlO3 on SrTiO3
S. A. Pauli, S. J. Leake, B. Delley +7
The evolution of the atomic structure of LaAlO3 grown on SrTiO3 was investigated using surface x-ray diffraction in conjunction with model-independent, phase-retrieval algorithms b…