| 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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Langhammer, Christoph
Chalmers University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024A surface passivated fluorinated polymer nanocomposite for carbon monoxide resistant plasmonic hydrogen sensingcitations
- 2024A surface passivated fluorinated polymer nanocomposite for carbon monoxide resistant plasmonic hydrogen sensingcitations
- 2023Bulk-Processed Plasmonic Plastic Nanocomposite Materials for Optical Hydrogen Detectioncitations
- 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
- 2020Novel wide-bandgap non-fullerene acceptors for efficient tandem organic solar cellscitations
- 2019Rationally Designed PdAuCu Ternary Alloy Nanoparticles for Intrinsically Deactivation-Resistant Ultrafast Plasmonic Hydrogen Sensingcitations
- 2019Metal-polymer hybrid nanomaterials for plasmonic ultrafast hydrogen detectioncitations
- 2019Optical property – composition correlation in noble metal alloy nanoparticles studied with EELScitations
- 2017A fullerene alloy based photovoltaic blend with a glass transition temperature above 200 degrees Ccitations
- 2016Bottom-Up Nanofabrication of Supported Noble Metal Alloy Nanoparticle Arrays for Plasmonicscitations
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.