| People | Locations | Statistics |
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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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Bastos Da Silva Fanta, Alice
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2023Thermal stability of hierarchical microstructural features in additively manufactured stainless steelcitations
- 2023Study in Phase-Transformation Temperature in Nitinol by In Situ TEM Heating
- 2023The effect of cyclic heat treatment on microstructure evolution during Plasma Arc Additive Manufacturing employing an SEM in-situ heating study
- 2023Probing the Effects of Cyclic Heating in Metal Additive Manufacturing by means of a Quasi in situ EBSD Study
- 2023Study of Phase-transformation Behavior in Additive Manufacturing of Nitinol Shape Memory Alloys by In Situ TEM Heating
- 2022Probing the role of grain boundaries in single Cu nanoparticle oxidation by in situ plasmonic scatteringcitations
- 2022Probing the role of grain boundaries in single Cu nanoparticle oxidation by in situ plasmonic scatteringcitations
- 2022Probing the role of grain boundaries in single Cu nanoparticle oxidation by in situ plasmonic scatteringcitations
- 2022High resolution crystal orientation mapping of ultrathin films in SEM and TEMcitations
- 2021Recent developments for the characterization of crystals and defects at the nanoscale using on-axis TKD in SEM
- 2021Challenges and perspectives of Transmission Kikuchi Diffraction for nanocrystalline materials characterization
- 2020Aminopropylsilatrane Linkers for Easy and Fast Fabrication of High-Quality 10 nm Thick Gold Films on SiO2 Substratescitations
- 2020Aminopropylsilatrane Linkers for Easy and Fast Fabrication of High-Quality 10 nm Thick Gold Films on SiO 2 Substratescitations
- 2019Metal-polymer hybrid nanomaterials for plasmonic ultrafast hydrogen detectioncitations
- 2018Optimal microstructural design for high thermal stability of pure FCC metals based on studying effect of twin boundaries character and network of grain boundariescitations
- 2017Influence of Ti and Cr Adhesion Layers on Ultrathin Au Filmscitations
- 2017Iron Oxide Films Prepared by Rapid Thermal Processing for Solar Energy Conversioncitations
- 2017Time-of-Flight Three Dimensional Neutron Diffraction in Transmission Mode for Mapping Crystal Grain Structurescitations
- 2017Time-of-Flight Three Dimensional Neutron Diffraction in Transmission Mode for Mapping Crystal Grain Structurescitations
- 2013Partial transformation of austenite in Al-Mn-Si TRIP steel upon tensile straining: an in situ EBSD studycitations
- 20093-D Analysis of Graphite Nodules in Ductile Cast Iron Using FIB-SEM
- 2008Three-dimensional EBSD study on the relationship between triple junctions and columnar grains in electrodeposited Co-Ni filmscitations
- 2007Orientation microscopy on nanostructured electrodeposited NiCo-Films
Places of action
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article
Probing the role of grain boundaries in single Cu nanoparticle oxidation by in situ plasmonic scattering
Abstract
Grain boundaries determine physical properties of bulk materials including ductility, diffusivity, and electrical conductivity. However, the role of grain boundaries in nanostructures and nanoparticles is much less understood, despite the wide application of nanoparticles in nanophotonics, nanoelectronics, and heterogeneous catalysis. Here, we investigate the role of high-angle grain boundaries in the oxidation of Cu nanoparticles, using a combination of in situ single particle plasmonic nanoimaging and postmortem transmission electron microscopy image analysis, together with ab initio and classical electromagnetic calculations. We find an initial growth of a 5-nm-thick Cu2O shell on all nanoparticles, irrespective of different grain morphologies. This insensitivity of the Cu2O shell on the grain morphology is rationalized by extraction of Cu atoms from the metal lattice being the rate limiting step, as proposed by density functional theory calculations. Furthermore, we find that the change in optical scattering intensity measured from the individual particles can be deconvoluted into one contribution from the oxide layer growth and one contribution that is directly proportional to the grain boundary density. The latter contribution signals accumulation of Cu vacancies at the grain boundaries, which, as corroborated by calculations of the optical scattering, leads to increased absorption losses and thus a decrease of the scattering, thereby manifesting the role of grain boundaries as vacancy sinks and nuclei for Kirkendall void formation at a later stage of the oxidation process.