693.932 PEOPLE
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kübel, Christian
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (44/44 displayed)
- 2024Lifecycle of Pd Clusters:Following the Formation and Evolution of Active Pd Clusters on Ceria During CO Oxidation by In Situ/Operando Characterization Techniquescitations
- 2024Graphitizability of Polymer Thin Films: An In Situ TEM Study of Thickness Effects on Nanocrystalline Graphene/Glassy Carbon Formationcitations
- 2024Controlling shear band instability by nanoscale heterogeneities in metallic nanoglasses
- 2024Lifecycle of Pd Clusters: Following the Formation and Evolution of Active Pd Clusters on Ceria During CO Oxidation by In Situ/Operando Characterization Techniques
- 2024Dependence of the Structural and Magnetic Properties on the Growth Sequence in Heterostructures Designed by YbFeO$_3$ and BaFe$_{12}$O$_{19}$
- 2024The Impact of Microstructure on Filament Growth at the Sodium Metal Anode in All‐Solid‐State Sodium Batteries
- 2024Precipitate-mediated enhancement of mechanical and electrical properties in HPTE-processed Al–Mg–Si alloy
- 2024Deformation twins as a probe for tribologically induced stress statescitations
- 2023Graphitizability of Polymer Thin Films: An In Situ TEM Study of Thickness Effects on Nanocrystalline Graphene/Glassy Carbon Formationcitations
- 2023Poly(ethylene oxide)-block-poly(hexyl acrylate) Copolymers as Templates for Large Mesopore Sizes─A Detailed Porosity Analysiscitations
- 2023Kinetics and Pore Formation of the Sodium Metal Anode on NASICON‐Type Na$_{3.4}$ Zr$_2$Si$_{2.4}$P$_{0.6}$O$_{12}$ for Sodium Solid‐State Batteries
- 2023Novel thin film high entropy alloys with tunable microstructure and enhanced mechanical properties
- 2023The Impact of Microstructure on Filament Growth at the Sodium Metal Anode in All‐Solid‐State Sodium Batteriescitations
- 2023Direct Observation of Quadrupolar Strain Fields forming a Shear Band in Metallic Glassescitations
- 2023Deposition of Sodium Metal at the Copper‐NaSICON Interface for Reservoir‐Free Solid‐State Sodium Batteriescitations
- 2023Multi‐component PtFeCoNi core‐shell nanoparticles on MWCNTs as promising bifunctional catalyst for oxygen reduction and oxygen evolution reactionscitations
- 2023Deformation twins as a probe for tribologically induced stress states
- 2023Unraveling the Electrochemical Mechanism in Tin Oxide/MXene Nanocomposites as Highly Reversible Negative Electrodes for Lithium‐Ion Batteriescitations
- 2022Kinetics and Pore Formation of the Sodium Metal Anode on NASICON‐Type Na$_{3.4}$ Zr$_2$Si$_{2.4}$P$_{0.6}$O$_{12}$ for Sodium Solid‐State Batteriescitations
- 2022In Situ Generated Shear Bands in Metallic Glass Investigated by Atomic Force and Analytical Transmission Electron Microscopycitations
- 2022Effects of metal-based additives on dehydrogenation process of 2NaBH4 + MgH2 systemcitations
- 2022Direct observation of Eshelby inclusions in metallic glasses
- 2021Unveiling the Local Atomic Arrangements in the Shear Band Regions of Metallic Glasscitations
- 2021Generating digital twins of mesoporous silica by graph-based stochastic microstructure modelingcitations
- 2020Early deformation mechanisms in the shear affected region underneath a copper sliding contactcitations
- 2020Designing Structurally Ordered Pt/Sn Nanoparticles in Ionic Liquids and their Enhanced Catalytic Performancecitations
- 2020Microfluidic Crystallization of Surfactant-Free Doped Zinc Sulfide Nanoparticles for Optical Bioimaging Applicationscitations
- 2020First-time synthesis of a magnetoelectric core-shell composite via conventional solid-state reactioncitations
- 2019Ostwald-like Ripening in Highly Defective Graphene
- 2019Electron beam effects on oxide thin films - structure and electrical property correlationscitations
- 2018Evolution of Glassy Carbon Microstructure: In Situ Transmission Electron Microscopy of the Pyrolysis Process
- 2018Evolution of Glassy Carbon Microstructure: In Situ Transmission Electron Microscopy of the Pyrolysis Processcitations
- 2018(De)Lithiation Mechanism of Hierarchically Layered LiNi$_{1/3}$Co$_{1/3}$Mn$_{1/3}$O$_{2}$ Cathodes during High-Voltage Cyclingcitations
- 2018MOF-templated synthesis of 3D Bi2O3 supracrystals with bcc packingcitations
- 2018Structure and Properties of Nanoglassescitations
- 2016Influence of gas atmospheres and ceria on the stability of nanoporous gold studied by environmental electron microscopy and in situ ptychographycitations
- 2015Light emission, light detection and strain sensing with nanocrystalline graphenecitations
- 2015Fatigue Behavior of Ultrafine-Grained Medium Carbon Steel with Different Carbide Morphologies Processed by High Pressure Torsioncitations
- 2015Nanoporous-gold-based composites : toward tensile ductility
- 2014Laser ablation mechanism for modification of composite electrodes with improved electrolyte wetting behaviour
- 2014Density changes in shear bands of a metallic glass determined by correlative analytical transmission electron microscopycitations
- 2013Influence of particle size and fluorination ratio of CFₓ precursor compounds on the electrochemical performance of C-FeF₂ nanocomposites for reversible lithium storagecitations
- 2011Microstructure of sol-gel derived nanoscaled La0.6Sr0.4CoO 3-delta cathodes for intermediate-temperature SOFCs
- 2010Tungsten materials for structural divertor applications
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article
Influence of gas atmospheres and ceria on the stability of nanoporous gold studied by environmental electron microscopy and in situ ptychography
Abstract
A novel complementary approach of electron microscopy/environmental TEM and in situ hard X-ray ptychography was used to study the thermally induced coarsening of nanoporous gold under different atmospheres, pressures and after ceria deposition. The temperature applied during ptychographic imaging was determined by IR thermography. While using elevated temperatures (room temperature – 400 °C) and realistic gas atmospheres (1 bar) we achieved for the first time a spatial resolution of about 20 nm during hard X-ray ptychography. The annealing of pure and ceria stabilized nanoporous gold in different atmospheres revealed that the conditions have a tremendous influence on the coarsening. The porous structure of the samples was stable up to approximately 800 °C in vacuum, whereas pronounced changes and coarsening were observed already at approximately 300 °C in oxygen containing atmospheres. A layer of ceria on the nanoporous gold led to an improvement of the stability, but did not alleviate the influence of the gas atmosphere. Different behaviors were observed, such as coarsening and even material loss or migration. The results suggest that additional mechanisms beyond surface diffusion need to be considered and that microscopic studies aimed at more realistic conditions are important to understand the behavior of such materials and catalysts.