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Article Dans Une Revue Scientific Reports Année : 2016

Ion-shaping of embedded gold hollow nanoshells into vertically aligned prolate morphologies

Résumé

Ion beam shaping is a novel technique with which one can shape nano-structures that are embedded in a matrix, while simultaneously imposing their orientation in space. In this work, we demonstrate that the ion-shaping technique can be implemented successfully to engineer the morphology of hollow metallic spherical particles embedded within a silica matrix. The outer diameter of these particles ranges between 20 and 60 nm and their shell thickness between 3 and 14 nm. Samples have been irradiated with 74 MeV Kr ions at room temperature and for increasing fluences up to 3.8 × 10$^{14}$ cm$^{−2}$. In parallel, the experimental results have been theoretically simulated by using a three-dimensional code based on the thermal-spike model. These calculations show that the particles undergo a partial melting during the ion impact, and that the amount of molten phase is maximal when the impact is off-center, hitting only one hemisphere of the hollow nano-particle. We suggest a deformation scenario which differs from the one that is generally proposed for solid nano-particles. Finally, these functional materials can be seen as building blocks for the fabrication of nanodevices with really three-dimensional architecture.
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Origine : Publication financée par une institution
Licence : CC BY - Paternité

Dates et versions

hal-01834937 , version 1 (22-12-2023)

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Paternité

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Christian Dufour, V Khomrenkov, Pierre-Eugène Coulon, Julia Amici, Marie-Claude Clochard, et al.. Ion-shaping of embedded gold hollow nanoshells into vertically aligned prolate morphologies. Scientific Reports, 2016, 6, pp.21116. ⟨10.1038/srep21116⟩. ⟨hal-01834937⟩
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