Irradiation-induced stiffening of carbon nanotube bundles

M. Sammalkorpi; A.V. Krasheninnikov; A. Kuronen; K. Nordlund; K. Kaski

doi:10.1016/j.nimb.2004.10.036

Irradiation-induced stiffening of carbon nanotube bundles

M. Sammalkorpi, A.V. Krasheninnikov, A. Kuronen, K. Nordlund, K. Kaski

Research output: Contribution to journal › Article › Scientific › peer-review

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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.

Original language	English
Pages (from-to)	142–145
Journal	NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH SECTION B: BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume	228
Issue number	1-4
DOIs	https://doi.org/10.1016/j.nimb.2004.10.036
Publication status	Published - 2005
MoE publication type	A1 Journal article-refereed

Keywords

carbon nanotube
molecular dynamics
irradiation
bending modulus
load transfer
defects

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10.1016/j.nimb.2004.10.036

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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{\textquoteright}s modulus of individual nanotubes due to vacancies.",

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TY - JOUR

T1 - Irradiation-induced stiffening of carbon nanotube bundles

AU - Sammalkorpi, M.

AU - Krasheninnikov, A.V.

AU - Kuronen, A.

AU - Nordlund, K.

AU - Kaski, K.

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.

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.

KW - carbon nanotube

KW - molecular dynamics

KW - irradiation

KW - bending modulus

KW - load transfer

KW - defects

U2 - 10.1016/j.nimb.2004.10.036

DO - 10.1016/j.nimb.2004.10.036

M3 - Article

SN - 0168-583X

VL - 228

SP - 142

EP - 145

JO - NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH SECTION B: BEAM INTERACTIONS WITH MATERIALS AND ATOMS

JF - NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH SECTION B: BEAM INTERACTIONS WITH MATERIALS AND ATOMS

IS - 1-4

ER -

Irradiation-induced stiffening of carbon nanotube bundles

Abstract

Keywords

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