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

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

56 Sitaatiot (Scopus)

Abstrakti

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.

Alkuperäiskieli	Englanti
Sivut	142–145
Julkaisu	NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH SECTION B: BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Vuosikerta	228
Numero	1-4
DOI - pysyväislinkit	https://doi.org/10.1016/j.nimb.2004.10.036
Tila	Julkaistu - 2005
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Tutkimusalat

carbon nanotube

Pääsy asiakirjaan

10.1016/j.nimb.2004.10.036

Siteeraa tätä

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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.",

keywords = "carbon nanotube, carbon nanotube, carbon nanotube, molecular dynamics, irradiation, bending modulus, load transfer, defects",

author = "M. Sammalkorpi and A.V. Krasheninnikov and A. Kuronen and K. Nordlund and K. Kaski",

year = "2005",

doi = "10.1016/j.nimb.2004.10.036",

language = "English",

volume = "228",

pages = "142–145",

journal = "NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH SECTION B: BEAM INTERACTIONS WITH MATERIALS AND ATOMS",

issn = "0168-583X",

publisher = "Elsevier",

number = "1-4",

}

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

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