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1. Evidence of high Sr/Ca in a Middle Jurassic murolith coccolith species

Author

Suchéras-Marx, Baptiste, Giraud, Fabienne, Simionovici, Alexandre, Tucoulou, Rémi, and Daniel, Isabelle

Subjects
Archaeology, CC1-960, Science
Abstract

Paleoceanographical reconstructions are often based on microfossil geochemical analyses. Coccoliths are the most ancient, abundant and continuous record of pelagic photic zone calcite producer organisms. Hence, they could be valuable substrates for geochemically based paleoenvironmental reconstructions but only Sr/Ca is exploited even if it remains poorly understood. For example, some murolith coccoliths species have very high Sr/Ca compared to the common 1-4 mmol/mol recorded in placolith coccoliths. In this study, we analyzed the elemental composition of the Middle Jurassic murolith Crepidolithus crassus by synchrotron-based nanoXRF (X-ray Fluorescence Spectroscopy) mapping focusing on Sr/Ca and compared the record to two placolith species, namely Watznaueria contracta and Discorhabdus striatus. In C. crassus, Sr/Ca is more than ten times higher than in both placoliths and seems higher in the proximal cycle. By comparison with the placoliths analyzed in the same analytical set-up and from the same sample, we exclude the impact of the diagenesis and seawater Sr/Ca to explain the high Sr/Ca in C. crassus. Based on comparisons to Pontosphaera discopora and Scyphosphaera apsteinii which also have high Sr/Ca, it seems more likely that high Sr/Ca in C. crassus is either due to the vertical elongation of the R-units of the proximal cycle or related to the action of the special polysaccharide controlling the growth of those vertically elongated R-units that may have affinities to Sr2+. In order to apply the Sr/Ca proxy to muroliths, further investigations are needed on cultured coccoliths.

Published
2021
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4. Adorym: A multi-platform generic x-ray image reconstruction framework based on automatic differentiation

Author

Du, Ming, Kandel, Saugat, Deng, Junjing, Huang, Xiaojing, Demortiere, Arnaud, Nguyen, Tuan Tu, Tucoulou, Remi, De Andrade, Vincent, Jin, Qiaoling, and Jacobsen, Chris

Subjects
Electrical Engineering and Systems Science - Image and Video Processing, Mathematics - Numerical Analysis, Physics - Computational Physics
Abstract

We describe and demonstrate an optimization-based x-ray image reconstruction framework called Adorym. Our framework provides a generic forward model, allowing one code framework to be used for a wide range of imaging methods ranging from near-field holography to and fly-scan ptychographic tomography. By using automatic differentiation for optimization, Adorym has the flexibility to refine experimental parameters including probe positions, multiple hologram alignment, and object tilts. It is written with strong support for parallel processing, allowing large datasets to be processed on high-performance computing systems. We demonstrate its use on several experimental datasets to show improved image quality through parameter refinement.

Published
2020
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6. B1-B2 phase transition in MgO at ultra-high static pressure

Author

Dubrovinskaia, Natalia, Petitgirard, Sylvain, Chariton, Stella, Tucoulou, Remi, Garrevoet, Jan, Glazyrin, Konstantin, Liermann, Hanns-Peter, Prakapenka, Vitali B., and Dubrovinsky, Leonid

Subjects
Condensed Matter - Materials Science
Abstract

Studies of the behaviour of solids at ultra-high pressures, those beyond 200 GPa, contribute to our fundamental understanding of materials properties and allow an insight into the processes happening at such extreme conditions relevant for terrestrial and extra-terrestrial bodies. The behaviour of magnesium oxide, MgO, is of a particular importance, as it is believed to be a major phase in the Earth lower mantle and the interior of super-Earth planets. Here we report the results of studies of MgO at ultra-high static pressures up to ca. 660 GPa using the double-stage diamond anvil cell technique with synchrotron X-ray diffraction. We observed the B1-B2 phase transition in the pressure interval from 429(10) GPa to 562(10) GPa setting an unambiguous reference mark for the B1-B2 transition in MgO at room temperature. Our observations allow constraining theoretical predictions and results of available so far dynamic compression experiments.

Published
2019

9. In Operando Study of Microsupercapacitors with Gel Electrolytes Using Nano‐Beam Synchrotron X‐ray Diffraction.

Author

Li, Gui, Boulanger, Nicolas, Iakunkov, Artem, Xue, Han, Li, Jiantong, Tucoulou, Rémi, and Talyzin, Alexandr

Subjects
ENERGY storage, SYNCHROTRON radiation, X-ray diffraction, ION migration & velocity, CELL morphology
Abstract

Synchrotron radiation X‐ray diffraction (XRD) with nanoscale beam size was used here for in situ and in operando study of micro‐supercapacitors (MSC) with gel electrolyte and MXene Ti3C2Tx electrodes. The electrode structure was characterized as a function of applied voltage and distance from the gap separating electrodes using microscopic cells with cylindrical shape designed for transmission mode XRD. The devices with gel electrolytes based on H2SO4 (with H2O/PVA and DMSO/PVA) showed stable performance with no changes in MXene structure under voltage swaps between positive and negative values. Experiments with KI‐based electrolytes demonstrated changes of MXene structure correlated with decrease of energy storage parameters under conditions of increased operation voltage starting from 0.8 V. The optimal performance of the MSCs was observed when the MXene structure remained unchanged upon switching the applied voltage polarity. The changes of inter‐layer distance of MXene upon swap of applied voltage correlate with decrease of device performance and are undesirable for stable operation of MSC's. We also tested feasibility of X‐ray fluorescence (XRF) for characterization of electrolyte ion migration in MSCs using 2D element mapping. Irreversible sorption of iodine by MXene was found using XRF mapping of charged electrodes using standard in‐plane MSC device and KI electrolyte. [ABSTRACT FROM AUTHOR]

Published
2024
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10. Nanofocused X-Ray Beam to Reprogram Secure Circuits

Author

Anceau, Stéphanie, Bleuet, Pierre, Clédière, Jessy, Maingault, Laurent, Rainard, Jean-luc, Tucoulou, Rémi, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Fischer, Wieland, editor, and Homma, Naofumi, editor

Published
2017
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13. Unraveling the synergistic effects of Cu-Ag tandem catalysts during electrochemical CO2 reduction using nanofocused X-ray probes.

Author

Frisch, Marvin L., Wu, Longfei, Atlan, Clément, Ren, Zhe, Han, Madeleine, Tucoulou, Rémi, Liang, Liang, Lu, Jiasheng, Guo, An, Nong, Hong Nhan, Arinchtein, Aleks, Sprung, Michael, Villanova, Julie, Richard, Marie-Ingrid, and Strasser, Peter

Subjects
CATALYSTS, CATALYTIC activity, LATTICE dynamics, CARBON dioxide reduction, ELECTROLYTIC reduction, CATALYST structure, PHOTOCATHODES
Abstract

Controlling the selectivity of the electrocatalytic reduction of carbon dioxide into value-added chemicals continues to be a major challenge. Bulk and surface lattice strain in nanostructured electrocatalysts affect catalytic activity and selectivity. Here, we unravel the complex dynamics of synergistic lattice strain and stability effects of Cu-Ag tandem catalysts through a previously unexplored combination of in situ nanofocused X-ray absorption spectroscopy and Bragg coherent diffraction imaging. Three-dimensional strain maps reveal the lattice dynamics inside individual nanoparticles as a function of applied potential and product yields. Dynamic relations between strain, redox state, catalytic activity and selectivity are derived. Moderate Ag contents effectively reduce the competing evolution of H2 and, concomitantly, lead to an enhanced corrosion stability. Findings from this study evidence the power of advanced nanofocused spectroscopy techniques to provide new insights into the chemistry and structure of nanostructured catalysts. Combining in situ nanoprobe techniques paves the way for gaining insights into structure-selectivity relations for electrocatalysts. Herein, the dynamic evolution of lattice strain in individual nanoparticles is directly visualized with nanoscale resolution in Cu-Ag tandem catalysts during the electrocatalytic conversion of CO2 into value-added chemicals. [ABSTRACT FROM AUTHOR]

Published
2023
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14. Deciphering silver nanoparticle fate in liver up to biliary excretion using HepG2/C3A spheroids in scenarios mimicking different exposure pathways

Author

Rekik, Yousr, primary, Tardillo Suárez, Vanessa, additional, Raj Sharma, Vikas, additional, Chevallet, Mireille, additional, Gallet, Benoit, additional, Falconet, Denis, additional, Charbonnier, Peggy, additional, Kieffer, Isabelle, additional, Tucoulou, Rémi, additional, Jouneau, Pierre-Henri, additional, Veronesi, Giulia, additional, and Deniaud, Aurélien, additional

Published
2023
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18. Chemical Analysis of Trace Elements at the Nanoscale in Samples Recovered from Laser-Heated Diamond Anvil Cell Experiments

Author

Blanchard, Ingrid, primary, Petitgirard, Sylvain, additional, Laurenz, Vera, additional, Miyajima, Nobuyoshi, additional, Wilke, Max, additional, Rubie, Dave, additional, Lobanov, Sergey S., additional, Hennet, Louis, additional, Morgenroth, Wolfgang, additional, Tucoulou, Rémi, additional, Bonino, Valentina, additional, Zhao, Xuchao, additional, and Franchi, Ian, additional

Published
2022
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21. Subcellular architecture and metabolic connection in the planktonic photosymbiosis between Collodaria (radiolarians) and their microalgae

Author

Decelle, Johan, primary, Veronesi, Giulia, additional, LeKieffre, Charlotte, additional, Gallet, Benoit, additional, Chevalier, Fabien, additional, Stryhanyuk, Hryhoriy, additional, Marro, Sophie, additional, Ravanel, Stéphane, additional, Tucoulou, Rémi, additional, Schieber, Nicole, additional, Finazzi, Giovanni, additional, Schwab, Yannick, additional, and Musat, Niculina, additional

Published
2021
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23. Cellular remains in a ~3.42-billion-year-old subseafloor hydrothermal environment

Author

Cavalazzi, Barbara, primary, Lemelle, Laurence, additional, Simionovici, Alexandre, additional, Cady, Sherry L., additional, Russell, Michael J., additional, Bailo, Elena, additional, Canteri, Roberto, additional, Enrico, Emanuele, additional, Manceau, Alain, additional, Maris, Assimo, additional, Salomé, Murielle, additional, Thomassot, Emilie, additional, Bouden, Nordine, additional, Tucoulou, Rémi, additional, and Hofmann, Axel, additional

Published
2021
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24. 3D Quantification Of Microstructural Properties Of Lini0.5Mn0.3Co0.2O2 High-Energy Density Electrodes By X-Ray Holographic Nano-Tomography

Author

Nguyen, Tuan-Tu, Villanova, Julie, Su, Zeliang, Tucoulou, Rémi, Fleutot, Benoît, Delobel, Bruno, Delacourt, Charles, Demortière, Arnaud, Laboratoire réactivité et chimie des solides - UMR CNRS 7314 (LRCS), Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Technocentre Renault [Guyancourt], RENAULT, European Synchroton Radiation Facility [Grenoble] (ESRF), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Advanced Lithium Energy Storage Systems - ALISTORE-ERI (ALISTORE-ERI), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), and Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)

Subjects
[CHIM.OTHE]Chemical Sciences/Other, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

International audience; Despite significant progress in the field of tomography, capturing the carbon binder domain (CBD) morphology presented in the Li-ion electrode remains challenging, due to its low attenuation coefficient. In this work, quantitative phase contrast X-ray nano-holotomography is used as a straightforward approach that provides a large reconstructed volume, where the CBD can be resolved along with the active materials and the pore space. As a result, a complete quantitative analysis of the microstructures of three LiNi0.5Mn0.3Co0.2O2 high energy density electrodes, including the characterization of each phase separately along with the statistical quantification of their inter-connectivity at particle scale, is performed. The microstructural heterogeneities are quantified and comparison between different electrodes is done. The results from this work suggest reasons for the negative impacts of the CBD excess on the electrode performance at high C-rates. Those results are true in the case of high energy density electrodes, and are due to the reduction of the electrochemical active surface area. This sheds light on the optimization of the electrode design to improve the power rate of high energy density electrodes.

Published
2021

25. Relationship Between Hg Speciation and Hg Methylation/Demethylation Processes in the Sulfate-Reducing Bacterium Pseudodesulfovibrio hydrargyri: Evidences From HERFD-XANES and Nano-XRF

Author

Isaure, Marie-Pierre, Albertelli, Marine, Kieffer, Isabelle, Tucoulou, Rémi, Petrel, Melina, Gontier, Etienne, Tessier, Emmanuel, Monperrus, Mathilde, Goñi-Urriza, Marisol, Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA), European Synchrotron Radiation Facility (ESRF), Bordeaux Imaging Center (BIC), Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut François Magendie-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), French National Program CNRS-INSU EC2CO-ECODYN (MethyMer)E2S-UPPA/Key Scientific challenges (Go-Beam), ANR-10-INBS-0004,France-BioImaging,Développment d'une infrastructure française distribuée coordonnée(2010), Iprem, Hal, Développment d'une infrastructure française distribuée coordonnée - - France-BioImaging2010 - ANR-10-INBS-0004 - INBS - VALID, Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, and Université de Bordeaux (UB)-Institut François Magendie-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV] Life Sciences [q-bio], Microbiology (medical), HERFD- XANES, [SDV]Life Sciences [q-bio], demethylation, methylmercury, nano-XRF, methylation, microorganisms, Microbiology, Hg, Original Research
Abstract

Microorganisms are key players in the transformation of mercury into neurotoxic methylmercury (MeHg). Nevertheless, this mechanism and the opposite MeHg demethylation remain poorly understood. Here, we explored the impact of inorganic mercury (IHg) and MeHg concentrations from 0.05 to 50 mu M on the production and degradation of MeHg in two sulfate-reducing bacteria, Pseudodesulfovibrio hydrargyri BerOc1 able to methylate and demethylate mercury and Desulfovibrio desulfuricans G200 only able to demethylate MeHg. MeHg produced by BerOc1 increased with increasing IHg concentration with a maximum attained for 5 mu M, and suggested a saturation of the process. MeHg was mainly found in the supernatant suggesting its export from the cell. Hg L-3-edge High- Energy-Resolution-Fluorescence-Detected-X-ray-Absorption-Near-Edge-Structure spectroscopy (HERFD-XANES) identified MeHg produced by BerOc1 as MeHg-cysteine(2) form. A dominant tetracoordinated beta HgS form was detected for BerOc1 exposed to the lowest IHg concentrations where methylation was detected. In contrast, at the highest exposure (50 mu M) where Hg methylation was abolished, Hg species drastically changed suggesting a role of Hg speciation in the production of MeHg. The tetracoordinated beta HgS was likely present as nano-particles as suggested by transmission electron microscopy combined to X-ray energy dispersive spectroscopy (TEM-X-EDS) and nano-X ray fluorescence (nano-XRF). When exposed to MeHg, the production of IHg, on the contrary, increased with the increase of MeHg exposure until 50 mu M for both BerOc1 and G200 strains, suggesting that demethylation did not require intact biological activity. The formed IHg species were identified as various tetracoordinated Hg-S forms. These results highlight the important role of thiol ligands and Hg coordination in Hg methylation and demethylation processes.

Published
2020

29. Subcellular Chemical Imaging: New Avenues in Cell Biology

Author

Decelle, Johan, primary, Veronesi, Giulia, additional, Gallet, Benoit, additional, Stryhanyuk, Hryhoriy, additional, Benettoni, Pietro, additional, Schmidt, Matthias, additional, Tucoulou, Rémi, additional, Passarelli, Melissa, additional, Bohic, Sylvain, additional, Clode, Peta, additional, and Musat, Niculina, additional

Published
2020
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30. Nuclear translocation of silver ions and hepatocyte nuclear receptor impairment upon exposure to silver nanoparticles

Author

Tardillo Suárez, Vanessa, primary, Karepina, Elizaveta, additional, Chevallet, Mireille, additional, Gallet, Benoit, additional, Cottet-Rousselle, Cécile, additional, Charbonnier, Peggy, additional, Moriscot, Christine, additional, Michaud-Soret, Isabelle, additional, Bal, Wojciech, additional, Fuchs, Alexandra, additional, Tucoulou, Rémi, additional, Jouneau, Pierre-Henri, additional, Veronesi, Giulia, additional, and Deniaud, Aurélien, additional

Published
2020
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31. Non linear microscopy and Synchrotron X-ray fluorescence to investigate BiFeO3 harmonic nanoparticle-based labeling of stem cells

Author

Dubreil, Laurence, Fleurisson, Romain, Charrier, Marine, Bouche, Axelle, Leroux, Isabelle, Gerber, Sandrine, Bonacina, Luigi, Somogyl, Andrea, Tucoulou, Rémi, Rivard, Camille, Rouger, Karl, Développement et Pathologie du Tissu Musculaire (DPTM), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Nantes, Group for functionalized Biomaterials, Department of applied Physics, Synchrotron SOLEIL, European Synchrotron Radiation Facility (ESRF), Département Caractérisation et Elaboration des Produits Issus de l'Agriculture (CEPIA), Institut National de la Recherche Agronomique (INRA), Physiopathologie Animale et bioThérapie du muscle et du système nerveux (PAnTher), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS), and ProdInra, Archive Ouverte

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio]
Abstract

Non linear microscopy and Synchrotron X-ray fluorescence to investigate BiFeO3 harmonic nanoparticle-based labeling of stem cells . 16ème colloque de la SFµ

Published
2019

32. Bifeo3 Harmonic Nanoparticle (Bfo-Hnps) Use for the Stem Cell Tracking: Labeling Investigation by Non Linear Microscopy and X-Ray Fluorescence

Author

Dubreil, Laurence, Fleurisson, Romain, CHARRIER, MARINE, Bouche, Axelle, Leroux, Isabelle, Gerber, Sandrine, Bonacina, Luigi, Somogyl, Andrea, Tucoulou, Rémi, RIVARD, Camille, Rouger, Karl, Développement et Pathologie du Tissu Musculaire (DPTM), Ecole Nationale Vétérinaire de Nantes-Institut National de la Recherche Agronomique (INRA), Group for Functionalized Biomaterials, Ecole Polytechnique Fédérale de Lausanne (EPFL), Department of Applied Physics [Genève], Université de Genève (UNIGE), Synchrotron SOLEIL, European Synchrotron Radiation Facility (ESRF), Département Caractérisation et Elaboration des Produits Issus de l'Agriculture (CEPIA), Institut National de la Recherche Agronomique (INRA), Physiopathologie Animale et bioThérapie du muscle et du système nerveux (PAnTher), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS), and Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Nantes

Subjects
microscopie, nanoparticle, [SDV]Life Sciences [q-bio], microscopy, nanoparticule
Abstract

Duchenne Muscular Dystrophy is the most common form of degenerative muscle disease; currently, there is no effective treatment. In 2011, our group showed that an adult stem cell population (MuStem) isolated from healthy dog skeletal muscle induces long-term muscle repair and striking clinical efficacy after its systemic delivery in clinically relevant dystrophic dog. During last years, our group isolated the human counterparts (hMuStem) [1]. To achieve the full therapeutic potential of the hMuStem cells, their homing process, survival and engraftment post-transplantation must be clearly understood. BiFeO3 harmonic nanoparticles (BFO-HNPs) were used as probes for the hMuStem cell tracking [2]. We demonstrate the possibility of identifying

Published
2019

33. Metals for Life in Earth & Planetary Sciences

Author

Simionovici, Alexandre S., Lemelle, Laurence, Solé, Vicente Armando, Tucoulou, Rémi, Suchéras-Marx, Baptiste, Bartolini, Annachiara, Simionovici, Alexandre, Solé, A, Schoonjans, T, Institut des Sciences de la Terre (ISTerre), Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA), Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), European Synchrotron Radiation Facility (ESRF), Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Muséum national d'Histoire naturelle (MNHN), and Suchéras-Marx, Baptiste

Subjects
[SDV.IB.BIO] Life Sciences [q-bio]/Bioengineering/Biomaterials, [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry, [SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry, [SDV.IB.BIO]Life Sciences [q-bio]/Bioengineering/Biomaterials
Abstract

International audience; Metals are pre-requisites for life, fingerprints of life and tracers of metabolic processes of biomineralisation in living organisms. To study metals at macromolecular interaction scales requires state of the art analytical capabilities down to trace element levels and nanometer spatial resolutions. Fortunately, in the last decade, highly sensitive X-ray probes have been developed at worldwide 3rd generation synchrotron facilities. To date, a limited number of these highly specific nanoimaging probes have been deployed, and the ESRF ID16A/B and ID21 ones are among the leaders. X-rays are non (or least) destructive, noninvasive, penetrative and highly sensitive probes of solid samples and metals are their ideal targets. X-ray fluorescence has reached few tens of nm resolutions and a world record for absolute mass of e.g. 50 zg for Fe, whichcan be recognized as only about 600 atoms. Over the past decade, we have developed a multi-analyses methodology of nanoimaging mid-Z elements in low-Z matrices as a direct application to Life and/or Planetary Sciences of trace metals in biological matrices or in C/Si-based ones.X-ray fluorescence and absorption spectroscopies, deployed at the few nanometer scales, are sensitive probes but they require a re-assessment of the analytical requirements previously established at the few micron levels [1]. We will present some specific analytical developments and methodologies optimized for such applications. They are centered onto absolute quantification of metals using both the Fundamental Parameter Approximation and reference materials, after spectra analysis using the PyMCA package [2] coupled to Monte-Carlo simulations of sample compositions [3] and geometries, prerequisites for 2D/3D elemental imaging. Examples based on metal detection were applied to either environmental key organisms such as foraminifers or coccolithofores [4, 5] but also to the oldest living organisms tracedback to life's origins on Earth [1]. Finally, our search for life being also aimed at planetary and astronomical scales on exoplanets, we will present our patented methodology and sample holder [6] for Quarantine Extraterrestrial Sample Analyses (QESA) for the upcoming Returned Sample Missions from Mars and asteroids [7].[1] – L. Lemelle, A. Simionovici et al., Trends Anal. Chem. 91, 104–111, 2017.[2] – Solé, V.A., Papillon, et al., Spectrochim. Acta B, 62, 63-68, 2006.[3] – T. Schoonjans, L. Vincze, V.A. Sol_e, et al., Spectrochim. Acta B 70, 10-23, 2012.[4] – L. Lemelle, A. Bartolini, A. Simionovici, et al., Nature Comm., (in review) 2019.[5] – B. Suchéras-Marx, F. Giraud, A. Simionovici et al., Geobiology 14, 390-403, 2016.[6] – A. Simionovici and CNES, European Patent Office # EP2411791A1, 2010.[7] – A. Simionovici, L Lemelle et al., Proc. of the EAS Annual Meeting, EWASS, 2019

Published
2019

34. Visualization of silver nanoparticle intracellular trafficking revealed nuclear translocation of silver ions leading to nuclear receptor impairment

Author

Suárez, Vanessa Tardillo, primary, Karepina, Elizaveta, additional, Chevallet, Mireille, additional, Gallet, Benoit, additional, Cottet-Rousselle, Cécile, additional, Charbonnier, Peggy, additional, Moriscot, Christine, additional, Michaud-Soret, Isabelle, additional, Bal, Wojciech, additional, Fuchs, Alexandra, additional, Tucoulou, Rémi, additional, Jouneau, Pierre-Henri, additional, Veronesi, Giulia, additional, and Deniaud, Aurélien, additional

Published
2019
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36. Algal Remodeling in a Ubiquitous Planktonic Photosymbiosis

Author

Decelle, Johan, primary, Stryhanyuk, Hryhoriy, additional, Gallet, Benoit, additional, Veronesi, Giulia, additional, Schmidt, Matthias, additional, Balzano, Sergio, additional, Marro, Sophie, additional, Uwizeye, Clarisse, additional, Jouneau, Pierre-Henri, additional, Lupette, Josselin, additional, Jouhet, Juliette, additional, Maréchal, Eric, additional, Schwab, Yannick, additional, Schieber, Nicole L., additional, Tucoulou, Rémi, additional, Richnow, Hans, additional, Finazzi, Giovanni, additional, and Musat, Niculina, additional

Published
2019
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37. 3D Quantification of Microstructural Properties of LiNi0.5Mn0.3Co0.2O2 High‐Energy Density Electrodes by X‐Ray Holographic Nano‐Tomography.

Author

Nguyen, Tuan‐Tu, Villanova, Julie, Su, Zeliang, Tucoulou, Rémi, Fleutot, Benoît, Delobel, Bruno, Delacourt, Charles, and Demortière, Arnaud

Subjects
ELECTRODE performance, ELECTRODES, ELECTROLYTIC reduction, ENERGY density, ATTENUATION coefficients, X-rays, HOLOGRAPHIC gratings
Abstract

Despite significant progress in the field of tomography, capturing the carbon binder domain (CBD) morphology presented in the Li‐ion electrode remains challenging, due to its low attenuation coefficient. In this work, quantitative phase contrast X‐ray nano‐holotomography is used as a straightforward approach that provides a large reconstructed volume, where the CBD can be resolved along with the active materials and the pore space. As a result, a complete quantitative analysis of the microstructures of three LiNi0.5Mn0.3Co0.2O2 high energy density electrodes, including the characterization of each phase separately along with the statistical quantification of their inter‐connectivity at particle scale, is performed. The microstructural heterogeneities are quantified and comparison between different electrodes is done. The results from this work suggest reasons for the negative impacts of the CBD excess on the electrode performance at high C‐rates. Those results are true in the case of high energy density electrodes, and are due to the reduction of the electrochemical active surface area. This sheds light on the optimization of the electrode design to improve the power rate of high energy density electrodes. [ABSTRACT FROM AUTHOR]

Published
2021
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40. Fast in situ 3D nanoimaging: a new tool for dynamic characterization in materials science

Author

Consejo Superior de Investigaciones Científicas (España), Villanova, Julie, Daudin, Rémi, Lhuissier, Pierre, Jauffrès, David, Lou, Siyu, Martin, Christophe L., Labouré, Sylvain, Tucoulou, Rémi, Martínez-Criado, Gema, Salvo, Luc, Consejo Superior de Investigaciones Científicas (España), Villanova, Julie, Daudin, Rémi, Lhuissier, Pierre, Jauffrès, David, Lou, Siyu, Martin, Christophe L., Labouré, Sylvain, Tucoulou, Rémi, Martínez-Criado, Gema, and Salvo, Luc

Abstract

The performance of many advanced materials is determined by the arrangement of their nanostructure which requires ever more precise characterization. In this respect, X-ray computed tomography (CT) is a powerful technique to investigate material properties as it provides non-destructive direct access to three-dimensional morphology with nanoscale resolution. However, challenges remain in clearly understanding physical mechanisms involved during their processing in real time and real conditions. So far, beam and sample stabilities, effective spatial resolution and tomography scan time have hindered the development of nanoscale in situ 4D imaging (3D plus time), and especially at high temperatures. Here, we report on the development of fast X-ray nanotomography at temperatures up to 700°C with an unprecedented combination of nanometer pixel size and acquisition times of a few tens of seconds. The great potential of the method is demonstrated by following the early stages of two thermally driven phenomena: neck curvature evolution in sintering and nucleation of liquid droplets in light alloys. The reported real time observations will benefit the fundamental understanding of the underlying physics and provide useful data to build new models. The novel aspects of this synchrotron based technique offer a powerful imaging tool for a wide variety of heterogeneous nanoscale dynamics in materials and open new perspectives for the investigation of advanced materials under realistic conditions.

Published
2017

43. ID16B: a hard X-ray nanoprobe beamline at the ESRF for nano-analysis

Author

Martínez-Criado, Gema, Villanova, Julie, Tucoulou, Rémi, Salomon, Damien, Suuronen, Jussi-Petteri, Labouré, Sylvain, Guilloud, Cyril, Valls, Valentin, Barrett, Raymond, Gagliardini, Eric, Dabin, Yves, Baker, Robert, Bohic, Sylvain, Cohena, Cédric, Morsea, John, Martínez-Criado, Gema, Villanova, Julie, Tucoulou, Rémi, Salomon, Damien, Suuronen, Jussi-Petteri, Labouré, Sylvain, Guilloud, Cyril, Valls, Valentin, Barrett, Raymond, Gagliardini, Eric, Dabin, Yves, Baker, Robert, Bohic, Sylvain, Cohena, Cédric, and Morsea, John

Abstract

Within the framework of the ESRF Phase I Upgrade Programme, a new state-of-the-art synchrotron beamline ID16B has been recently developed for hard X-ray nano-analysis. The construction of ID16B was driven by research areas with major scientific and societal impact such as nanotechnology, earth and environmental sciences, and bio-medical research. Based on a canted undulator source, this long beamline provides hard X-ray nanobeams optimized mainly for spectroscopic applications, including the combination of X-ray fluorescence, X-ray diffraction, X-ray excited optical luminescence, X-ray absorption spectroscopy and 2D/3D X-ray imaging techniques. Its end-station re-uses part of the apparatus of the earlier ID22 beamline, while improving and enlarging the spectroscopic capabilities: for example, the experimental arrangement offers improved lateral spatial resolution (∼50 nm), a larger and more flexible capability for in situ experiments, and monochromatic nanobeams tunable over a wider energy range which now includes the hard X-ray regime (5–70 keV). This paper describes the characteristics of this new facility, short-term technical developments and the first scientific results.

Published
2016

44. Chemical Forms of Mercury in Human Hair Reveal Sources of Exposure

Author

Manceau, Alain, primary, Enescu, Mironel, additional, Simionovici, Alexandre, additional, Lanson, Martine, additional, Gonzalez-Rey, Maria, additional, Rovezzi, Mauro, additional, Tucoulou, Rémi, additional, Glatzel, Pieter, additional, Nagy, Kathryn L., additional, and Bourdineaud, Jean-Paul, additional

Published
2016
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46. ID16B: a hard X-ray nanoprobe beamline at the ESRF for nano-analysis

Author

Martínez-Criado, Gema, primary, Villanova, Julie, additional, Tucoulou, Rémi, additional, Salomon, Damien, additional, Suuronen, Jussi-Petteri, additional, Labouré, Sylvain, additional, Guilloud, Cyril, additional, Valls, Valentin, additional, Barrett, Raymond, additional, Gagliardini, Eric, additional, Dabin, Yves, additional, Baker, Robert, additional, Bohic, Sylvain, additional, Cohen, Cédric, additional, and Morse, John, additional

Published
2016
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47. NanoXRF elemental mapping of Middle Jurassic (~-170Ma) coccoliths

Author

Suchéras-Marx, Baptiste, Giraud, Fabienne, Daniel, Isabelle, Simionovici, Alexandre S., Tucoulou, Rémi, Simionovici, Alexandre, Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences de la Terre (ISTerre), Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA), European Synchrotron Radiation Facility (ESRF), and Suchéras-Marx, Baptiste

Subjects
[SDU.STU.PG] Sciences of the Universe [physics]/Earth Sciences/Paleontology, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology
Abstract

International audience; Coccolithophores algae produce micrometric calcite platelets called coccoliths. Coccoliths geological record is continuous from their appearance 220 Ma ago until today and are found in abundant marine environment in this time interval. Hence, coccoliths have huge potential for geochemical reconstruction of paleoclimate and paleoceanography through time. We have performed nanometric XRF analysis on 3 species of Early Bajocian (Middle Jurassic) coccoliths at European Synchrotron Radiation Facility (ESRF) on the beamline ID22NI, Grenoble, France. Based on this analysis, we endeavor to have a better understanding of the chemical composition of coccoliths and thus of marine waters where they were precipitated. Samples have been collected at Cabo Mondego, Portugal, the international reference section (GSSP) for the Early Bajocian interval and they were selected based on their preservation. Beforehand, coccoliths were separated from the matrix using a picking technique and deposited on 500 nm-thick silicon nitride membranes. With an excitation beam at 17 KeV and a resolution of 100 m, we have mapped 14 elements in coccoliths, i.e., S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Cu, Zn, Br, Rb and Sr. The mapping allows the recognition of biological incorporation of elements from the diagenetic overprint. Calcium, Strontium and Manganese are biologically organized in coccoliths. Sulfur, Chlorine, Chromium, and Bromine are also homogenously incorporated without relation with the crystallographic organization of the coccolith. Conversely, Potassium, Iron, Copper, Zinc, Titanium and Rubidium are related to diagenetic processes and clays contamination. These results will (1) help in a better understanding of the chemical incorporation of elements, and (2) in the recognition of diagenetic effects on coccoliths chemistry, and finally (3) develop new paleoceanographic proxies, e.g. the Chlorine and Bromine incorporation in coccoliths for salinity reconstructions. Further analysis especially on living species will greatly help in the calibration of such a proxy.

Published
2013

48. NanoXRF cartography of Middle Jurassic (~-170 Ma) coccoliths

Author

Suchéras-Marx, Baptiste, Giraud, Fabienne, Daniel, Isabelle, Simionovici, Alexandre S., Tucoulou, Rémi, Mattioli, Emanuela, Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences de la Terre (ISTerre), Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA), European Synchroton Radiation Facility [Grenoble] (ESRF), and Suchéras-Marx, Baptiste

Subjects
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry, [SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry, [SDU.STU.PG] Sciences of the Universe [physics]/Earth Sciences/Paleontology, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology
Abstract

International audience; Coccolithophores, golden-brown algae, produce micrometric calcite platelets called coccoliths. Coccoliths geological record is continuous from their appearance 220 Ma ago until today. Hence, coccoliths have huge potential for geochemical reconstruction of paleoclimate and paleoceanography through time. We have performed sub-micrometric XRF analysis on 3 species of Early Bajocian (Middle Jurassic) coccoliths at European Synchrotron Radiation Facility (ESRF) on the beamline ID22NI, Grenoble, France. Based on this analysis, which had never been applied on coccoliths before, we endeavor to have a better understanding of the chemical composition of coccoliths and thus of marine waters where they were precipitated. Samples have been collected at Cabo Mondego, Portugal, the international reference section (GSSP) for the Early Bajocian interval and they were selected based on their preservation. Beforehand, coccoliths were separated from the matrix using a picking technique and deposited on 500 nm-thick silicon nitride membranes. With an excitation beam at 17 KeV and a resolution of 100 m, we have mapped 14 elements in coccoliths, i.e., S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Cu, Zn, Br, Rb and Sr. The mapping allows the recognition of biological incorporation of elements from the diagenetic overprint. Calcium, Strontium and Manganese are biologically organized in coccoliths. Sulfur, Chlorine, Chromium, and Bromine are also incorporated in coccoliths without suffering any diagenetic process. Conversely, Potassium, Iron, Copper, Zinc, Titanium and Rubidium are related to diagenetic processes and clays contamination.These results, namely the first record of sub-micrometric chemical organization documented for coccoliths, will (1) help in a better understanding of the chemical incorporation of elements, and (2) in the recognition of diagenetic effects on coccoliths chemistry, and finally (3) develop new paleoceanographic proxies, e.g. the Chlorine and Bromine incorporation in coccoliths for salinity reconstructions. Further analysis especially on living species will greatly help in the calibration of such a proxy.

Published
2011

49. Exploring single semiconductor nanowires with a multimodal hard X-ray nanoprobe

Author

European Commission, Ministerio de Educación y Ciencia (España), Comunidad de Madrid, Martínez-Criado, Gema, Segura-Ruiz, Jaime, Alén, Benito, Eymery, Joël, Rogolev, Andrei, Tucoulou, Rémi, Homs, Alejandro, European Commission, Ministerio de Educación y Ciencia (España), Comunidad de Madrid, Martínez-Criado, Gema, Segura-Ruiz, Jaime, Alén, Benito, Eymery, Joël, Rogolev, Andrei, Tucoulou, Rémi, and Homs, Alejandro

Abstract

© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Semiconductor nanowires offer new opportunities for optoelectronic and spintronic nanodevices. However, their full potential is ultimately dictated by our ability to control multiple property-function relationships taking place at the nanoscale in the spatial and time domains. Only a combination of highresolution analytical techniques can provide a comprehensive understanding of their complex functionalities. Here we describe how a multimodal hard X-ray nanoprobe addresses fundamental questions in nanowire research. Selected topics ranging from cluster formation, dopant segregation, and phase separations to quantum confi nement effects are investigated with sub- 100 nm spatial resolution and sub-50 ps temporal resolution. This approach opens new avenues for structural, composition and optical studies with broad applicability in materials science.

Published
2014

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