title: Ion-shaping of embedded gold hollow nanoshells into vertically aligned prolate morphologies.
abstract: 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.
authors.affiliation: Laboratoire des Solides Irradiés, CNRS, CEA-DSM-IRAMIS, Ecole Polytechnique, Université Paris-Saclay, 91128 Palaiseau Cedex, France.
authors.forename: Pierre-Eugéne
authors.initials: PE
authors.lastname: Coulon
authors.affiliation: Laboratoire des Solides Irradiés, CNRS, CEA-DSM-IRAMIS, Ecole Polytechnique, Université Paris-Saclay, 91128 Palaiseau Cedex, France.
authors.forename: Julia
authors.initials: J
authors.lastname: Amici
authors.affiliation: Laboratoire des Solides Irradiés, CNRS, CEA-DSM-IRAMIS, Ecole Polytechnique, Université Paris-Saclay, 91128 Palaiseau Cedex, France.
authors.forename: Marie-Claude
authors.initials: MC
authors.lastname: Clochard
authors.affiliation: CIMAP-ENSICAEN-CEA-CNRS-University of Caen, Bd H. Becquerel, BP 5133, 14070, Caen Cedex 5, France.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Khomenkov
authors.affiliation: CIMAP-ENSICAEN-CEA-CNRS-University of Caen, Bd H. Becquerel, BP 5133, 14070, Caen Cedex 5, France.
authors.forename: Christian
authors.initials: C
authors.lastname: Dufour
authors.affiliation: CIMAP-ENSICAEN-CEA-CNRS-University of Caen, Bd H. Becquerel, BP 5133, 14070, Caen Cedex 5, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Monnet
authors.affiliation: CIMAP-ENSICAEN-CEA-CNRS-University of Caen, Bd H. Becquerel, BP 5133, 14070, Caen Cedex 5, France.
authors.forename: Clara
authors.initials: C
authors.lastname: Grygiel
authors.affiliation: Laboratoire de Physique de la Matière Condensée, CNRS, Ecole Polytechnique, Université Paris-Saclay, 91128 Palaiseau Cedex, France.
authors.forename: Sandrine
authors.initials: S
authors.lastname: Perruchas
authors.affiliation: Laboratoire de Photonique et Nanostructures, CNRS, Marcoussis, France.
authors.forename: Christian
authors.initials: C
authors.lastname: Ulysse
authors.affiliation: Laboratoire de Photonique et Nanostructures, CNRS, Marcoussis, France.
authors.forename: Ludovic
authors.initials: L
authors.lastname: Largeau
authors.affiliation: Laboratoire des Solides Irradiés, CNRS, CEA-DSM-IRAMIS, Ecole Polytechnique, Université Paris-Saclay, 91128 Palaiseau Cedex, France.
authors.forename: Giancarlo
authors.initials: G
authors.lastname: Rizza