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Your search keyword '"Nanostructures et Rayons X (NRX)"' showing total 4 results
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4 results on '"Nanostructures et Rayons X (NRX)"'

1. Employing surface curvature for spatially resolved X‐ray reflectivity: graphene domains on liquid copper

Author

Valentina Belova, Maciej Jankowski, Mehdi Saedi, Irene M. N. Groot, Gilles Renaud, Oleg V. Konovalov, European Synchroton Radiation Facility [Grenoble] (ESRF), Leiden Institute of Chemistry, Universiteit Leiden, Modélisation et Exploration des Matériaux (MEM), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Nanostructures et Rayons X (NRX), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), and European Project: 951943,DirectSepa

Subjects
[PHYS]Physics [physics], Mechanics of Materials, Mechanical Engineering
Abstract

Here we demonstrate the possibility of utilizing X-ray reflectivity for visualization with ~μm spatial resolution of a surface with a heterogeneous electron density due to a partial coverage by another nanometrically thin material. It requires the sample to be convexly bent, thus reflecting the collimated incident beam onto a magnified image recorded by a position-sensitive detector. By the use of a small, about ten microns, intense, and parallel beam such as provided by the most recent synchrotron sources, one can record such spatially resolved X-ray reflectivity with 0.1‒1 kHz frame rate. We demonstrate the use of the method for in situ, time-resolved characterization of single-layer graphene domains during their chemical vapor deposition on a naturally curved surface of a liquid copper drop. This method can follow the growth kinetics, including the coverage ratio, two-dimensional crystal (flake) sizes, and distances between flakes. By taking a single snapshot, we can reconstruct the individual X-ray reflectivity curves, of both covered and non-covered parts of the liquid surface, and thus deduce the corresponding electron density profiles perpendicular to the surface. The technique has a promising perspective for in situ study of two-dimensional materials, ultra-thin films, and self-assemblies on liquid as well as solid surfaces.

Published
2023
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2. Superstructures, Commensurations, and Rotation of Single-Layer TaS 2 on Au(111) Induced by Cs Intercalation/Deintercalation

Author

Xiaorong Weng, Philippe David, Valérie Guisset, Lucio Martinelli, Olivier Geaymond, Johann Coraux, Gilles Renaud, Nanostructures et Rayons X (NRX), Modélisation et Exploration des Matériaux (MEM), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)

Subjects
[PHYS]Physics [physics], General Engineering, General Physics and Astronomy, General Materials Science
Abstract

International audience

Published
2023
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3. Anomalous Glide Plane in Platinum Nano- and Microcrystals

Author

Marie-Ingrid Richard, Stéphane Labat, Maxime Dupraz, Jérôme Carnis, Lu Gao, Michaël Texier, Ni Li, Longfei Wu, Jan P. Hofmann, Mor Levi, Steven J. Leake, Sergey Lazarev, Michael Sprung, Emiel J.M. Hensen, Eugen Rabkin, Olivier Thomas, Nanostructures et Rayons X (NRX), Modélisation et Exploration des Matériaux (MEM), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), European Synchroton Radiation Facility [Grenoble] (ESRF), Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Eindhoven University of Technology [Eindhoven] (TU/e), Technische Universität Darmstadt - Technical University of Darmstadt (TU Darmstadt), Technion - Israel Institute of Technology [Haifa], Deutsches Elektronen-Synchrotron [Hamburg] (DESY), Technische Universiteit Eindhoven (TU/e), ANR-21-CE08-0033,DINACS,Défauts dans les nanocristaux: Imagerie par diffraction cohérente des rayons X et simulations(2021), European Project: 818823,CARINE, Inorganic Materials & Catalysis, and EIRES Chem. for Sustainable Energy Systems

Subjects
[PHYS]Physics [physics], Glide planes, Bragg coherent diffraction imaging, General Engineering, General Physics and Astronomy, General Materials Science, platinum, defects, dislocations
Abstract

International audience; At the nanoscale, the properties of materials depend critically on the presence of crystal defects. However, imaging and characterising the structure of defects in three dimensions inside a crystal remain a challenge. Here, by using Bragg coherent diffraction imaging, we observe an unexpected anomalous {110} glide plane in two Pt sub-micrometer crystals grown by very different processes and having very different morphologies. The structure of the defects (type, associated glide plane and lattice displacement) is imaged in these faceted Pt crystals. Using this non-invasive technique both plasticity and unusual defect behaviour can be probed at the nanoscale.

Published
2023
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4. Taking Bragg Coherent Diffraction Imaging to Higher Energies at Fourth Generation Synchrotrons: Nanoscale Characterization

Author

Richard, Marie-Ingrid, Martens, Isaac, Dupraz, Maxime, Drnec, Jakub, Honkimäki, Veijo, Chatelier, Corentin, Atlan, Clément, Mirolo, Marta, Levi, Mor, Rabkin, Eugen, Eymery, Joël, Naidu, Akshata, Schülli, Tobias, Leake, Steven, Nanostructures et Rayons X (NRX), Modélisation et Exploration des Matériaux (MEM), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), European Synchroton Radiation Facility [Grenoble] (ESRF), European Synchrotron Radiation Facility (ESRF), Technion - Israel Institute of Technology [Haifa], Nanostructures et Rayonnement Synchrotron (NRS ), European Synchrotron Research Facility, and European Project: 818823,CARINE

Subjects
[PHYS]Physics [physics], Bragg coherent diffraction imaging, strain, high-energy Bragg coherent diffraction imaging nanostructures strain morphology diffraction, nanostructures, morphology, diffraction, [CHIM.CRIS]Chemical Sciences/Cristallography, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], high-energy, [CHIM.MATE]Chemical Sciences/Material chemistry, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]
Abstract

International audience; High-energy Bragg coherent diffraction imaging (BCDI) can enable three-dimensional imaging of atomic structure within individual crystallites in complex environments. Here, we show that sufficient coherent photon flux is available to extend the BCDI technique to higher energies to: 1) obtain improved strain information and sensitivity 1 at the nanoscale with higher order Bragg reflections, 2) exploit BCDI in embedded materials or complex operando environments, 3) reduce x-ray induced sample modification and 4) minimize dynamical scattering effects. We demonstrate the nanoscale imaging technique on the same sub-micron sized crystal at 8.5, 19.9 and 33.4 keV by taking advantage of the brilliance and coherence of the fourth generation Extremely Brilliant Source of the ID01 beamline at ESRF-The European Synchrotron (Grenoble, France). The photon flux, data quality, resolution and strain information are compared. We also show first coherent diffraction measurements performed at the ID31-EBS beamline at an energy of 41 keV.

Published
2023
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