Irradiation-induced stiffening of carbon nanotube bundles

M Sammalkorpi, Arkady Krasheninnikov, Antti Kuronen, Kai Nordlund, K Kaski

    Forskningsoutput: TidskriftsbidragKonferensartikelVetenskapligPeer review

    Sammanfattning

    Recent experiments have demonstrated that electron irradiation of bundles of single-walled carbon nanotubes resulted in dramatic increase of the bundle bending modulus at moderate irradiation doses, followed by a decrease in mechanical properties at higher doses. To understand such a behavior, we employ molecular dynamics simulations with empirical potentials and analytical approximations to calculate defect production rates and mechanical properties of the irradiated nanotubes. We show that the observed peak in the bending modulus originates from a trade-off between irradiation-induced bundle stiffening via inter-tube covalent bonds and a drop in the Young's modulus of individual nanotubes due to vacancies. (C) 2004 Elsevier B.V. All rights reserved.
    Originalspråkengelska
    TidskriftNuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
    Volym228
    Sidor (från-till)142-145
    Antal sidor4
    ISSN0168-583X
    DOI
    StatusPublicerad - 2005
    MoE-publikationstypA4 Artikel i en konferenspublikation
    EvenemangUnknown host publication - , Holland
    Varaktighet: 1 jan 1800 → …

    Vetenskapsgrenar

    • 114 Fysik

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    title = "Irradiation-induced stiffening of carbon nanotube bundles",
    abstract = "Recent experiments have demonstrated that electron irradiation of bundles of single-walled carbon nanotubes resulted in dramatic increase of the bundle bending modulus at moderate irradiation doses, followed by a decrease in mechanical properties at higher doses. To understand such a behavior, we employ molecular dynamics simulations with empirical potentials and analytical approximations to calculate defect production rates and mechanical properties of the irradiated nanotubes. We show that the observed peak in the bending modulus originates from a trade-off between irradiation-induced bundle stiffening via inter-tube covalent bonds and a drop in the Young's modulus of individual nanotubes due to vacancies. (C) 2004 Elsevier B.V. All rights reserved.",
    keywords = "114 Physical sciences",
    author = "M Sammalkorpi and Arkady Krasheninnikov and Antti Kuronen and Kai Nordlund and K Kaski",
    note = "Volume: 228 Host publication title: Seventh International Conference on Computer Simulation of Radiation Effects in Solids Proceeding volume:",
    year = "2005",
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    Irradiation-induced stiffening of carbon nanotube bundles. / Sammalkorpi, M; Krasheninnikov, Arkady; Kuronen, Antti; Nordlund, Kai; Kaski, K.

    I: Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, Vol. 228, 2005, s. 142-145.

    Forskningsoutput: TidskriftsbidragKonferensartikelVetenskapligPeer review

    TY - JOUR

    T1 - Irradiation-induced stiffening of carbon nanotube bundles

    AU - Sammalkorpi, M

    AU - Krasheninnikov, Arkady

    AU - Kuronen, Antti

    AU - Nordlund, Kai

    AU - Kaski, K

    N1 - Volume: 228 Host publication title: Seventh International Conference on Computer Simulation of Radiation Effects in Solids Proceeding volume:

    PY - 2005

    Y1 - 2005

    N2 - Recent experiments have demonstrated that electron irradiation of bundles of single-walled carbon nanotubes resulted in dramatic increase of the bundle bending modulus at moderate irradiation doses, followed by a decrease in mechanical properties at higher doses. To understand such a behavior, we employ molecular dynamics simulations with empirical potentials and analytical approximations to calculate defect production rates and mechanical properties of the irradiated nanotubes. We show that the observed peak in the bending modulus originates from a trade-off between irradiation-induced bundle stiffening via inter-tube covalent bonds and a drop in the Young's modulus of individual nanotubes due to vacancies. (C) 2004 Elsevier B.V. All rights reserved.

    AB - Recent experiments have demonstrated that electron irradiation of bundles of single-walled carbon nanotubes resulted in dramatic increase of the bundle bending modulus at moderate irradiation doses, followed by a decrease in mechanical properties at higher doses. To understand such a behavior, we employ molecular dynamics simulations with empirical potentials and analytical approximations to calculate defect production rates and mechanical properties of the irradiated nanotubes. We show that the observed peak in the bending modulus originates from a trade-off between irradiation-induced bundle stiffening via inter-tube covalent bonds and a drop in the Young's modulus of individual nanotubes due to vacancies. (C) 2004 Elsevier B.V. All rights reserved.

    KW - 114 Physical sciences

    U2 - 10.1016/j.nimb.2004.10.036

    DO - 10.1016/j.nimb.2004.10.036

    M3 - Conference article

    VL - 228

    SP - 142

    EP - 145

    JO - Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

    JF - Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

    SN - 0168-583X

    ER -