| 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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Hofer, Ferdinand
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Three-dimensional distribution of individual atoms in the channels of beryl
- 2024Atom by atom analysis of defect structures in doped STO
- 2022Quantifying Ordering Phenomena at the Atomic Scale in Rare Earth Oxide Ceramics via EELS Elemental Mapping
- 2022A study on the correlation between micro and magnetic domain structure of Cu52Ni34Fe14 spinodal alloyscitations
- 2022Challenges in the characterization of complex nanomaterials with analytical STEM
- 2022Mixed-metal nanoparticlescitations
- 2021An In Situ Synchrotron Dilatometry and Atomistic Study of Martensite and Carbide Formation during Partitioning and Temperingcitations
- 2021Spectroscopic STEM imaging in 2D and 3D
- 2020Helium droplet assisted synthesis of plasmonic Ag@ZnO core@shell nanoparticlescitations
- 2020Ultrashort XUV pulse absorption spectroscopy of partially oxidized cobalt nanoparticlescitations
- 2019Ultra-thin h-BN substrates for nanoscale plasmon spectroscopycitations
- 2019On the passivation of iron particles at the nanoscalecitations
- 2019The impact of swift electrons on the segregation of Ni-Au nanoalloyscitations
- 2019Effects of the Core Location on the Structural Stability of Ni-Au Core-Shell Nanoparticlescitations
- 2019Structural characterization of poly-Si Films crystallized by Ni Metal Induced Lateral Crystallizationcitations
- 2018Stability of Core-Shell Nanoparticles for Catalysis at Elevated Temperaturescitations
- 2018How Dark Are Radial Breathing Modes in Plasmonic Nanodisks?citations
- 2017Thermally induced breakup of metallic nanowirescitations
- 2017Inclusions in Si whiskers grown by Ni metal induced lateral crystallizationcitations
- 2017How Dark Are Radial Breathing Modes in Plasmonic Nanodisks?citations
- 2016Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography
- 2014Order vs. disorder — a huge increase in ionic conductivity of nanocrystalline LiAlO2 embedded in an amorphous-like matrix of lithium aluminatecitations
- 2013Bismuth sulphide–polymer nanocomposites from a highly soluble bismuth xanthate precursorcitations
- 2013Influence of the bridging atom in fluorene analogue low‐bandgap polymers on photophysical and morphological properties of copper indium sulfide/polymer nanocomposite solar cellscitations
- 2012Comprehensive Investigation of Silver Nanoparticle/Aluminum Electrodes for Copper Indium Sulfide/Polymer Hybrid Solar Cellscitations
- 2012Application of elemental microanalysis to elucidate the role of spherites in the digestive gland of the helicid snail Chilostoma lefeburiana
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article
The impact of swift electrons on the segregation of Ni-Au nanoalloys
Abstract
<p>We report on the electron beam-induced segregation of alloyed Ni-Au clusters into a Ni and Au rich phase at temperatures above the miscibility gap of a binary system. The nanoparticles, with diameters less than 10 nm, are grown fully inert in superfluid helium droplets with a Ni-Au core-shell morphology. Upon heating, the clusters are alloyed and subsequently transformed to a Janus-type morphology under irradiation with swift electrons. The underlying mechanisms are studied experimentally via in situ scanning transmission electron microscopy and theoretically via atomistic simulation techniques under consideration of elastic electron interactions. We find that the segregation kinetics is highly temperature-dependent and attribute this behavior to diffusive relaxation processes. The presented results shed light on radiation induced phenomena using clusters as a model system and suggest new routes for the synthesis of structures in nonequilibrium configurations.</p>