| 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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Jansson, Ville
University of Helsinki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2020Application of artificial neural networks for rigid lattice kinetic Monte Carlo studies of Cu surface diffusioncitations
- 2020Tungsten migration energy barriers for surface diffusioncitations
- 2019Au nanowire junction breakup through surface atom diffusioncitations
- 2018Simulations of surface stress effects in nanoscale single crystalscitations
- 2018Migration barriers for surface diffusion on a rigid lattice : Challenges and solutionscitations
- 2018Migration barriers for surface diffusion on a rigid latticecitations
- 2018Au nanowire junction breakup through surface atom diffusioncitations
- 2016Long-term stability of Cu surface nanotipscitations
- 2011Interaction of Carbon with Vacancy and Self-Interstitial Atom Clusters in [alpha]-Iron Studied using Metallic-Covalent Interatomic Potentialcitations
Places of action
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article
Au nanowire junction breakup through surface atom diffusion
Abstract
Metallic nanowires are known to break into shorter fragments due to the Rayleigh instability mechanism. This process is strongly accelerated at elevated temperatures and can completely hinder the functioning of nanowire-based devices like e.g. transparent conductive and flexible coatings. At the same time, arranged gold nanodots have important applications in electrochemical sensors. In this paper we perform a series of annealing experiments of gold and silver nanowires and nanowire junctions at fixed temperatures 473, 673, 873 and 973 K (200 degrees C, 400 degrees C, 600 degrees C and 700 degrees C) during a time period of 10 min. We show that nanowires are especially prone to fragmentation around junctions and crossing points even at comparatively low temperatures. The fragmentation process is highly temperature dependent and the junction region breaks up at a lower temperature than a single nanowire. We develop a gold parametrization for kinetic Monte Carlo simulations and demonstrate the surface diffusion origin of the nanowire junction fragmentation. We show that nanowire fragmentation starts at the junctions with high reliability and propose that aligning nanowires in a regular grid could be used as a technique for fabricating arrays of nanodots.