Angular dependence of surfactant-mediated forces between carbon nanotubes

Dirk Mueter, Panagiotis Angelikopoulos, Henry Bock

Research output: Contribution to journalArticle

Abstract

We employ dissipative particle dynamics to examine surfactant-mediated forces between two carbon nanotubes. Calculations are performed varying both the distance and the angle between the nanotubes. For small distances, a repulsive region is observed, followed by an overall attractive interval with strong oscillations in the force. Decreasing the angle between the tubes leads to a steady increase in the force, but the relative dependence on the separation distance is preserved. We find that the force scales linearly with the size of the overlap area between the tubes. This allows us to express the angle dependence by a simple equation, whereas the distance dependence is represented by a master curve. For the parallel case, the behavior is significantly different.

Original languageEnglish
Pages (from-to)14869-14875
Number of pages7
JournalJournal of Physical Chemistry B
Volume116
Issue number51
DOIs
Publication statusPublished - 27 Dec 2012

Keywords

  • DRUG
  • AQUEOUS DISPERSIONS
  • FABRICATION
  • MECHANICAL-PROPERTIES
  • SIMULATION
  • MOLECULAR-DYNAMICS
  • ANGLE NEUTRON-SCATTERING

Cite this

Mueter, Dirk ; Angelikopoulos, Panagiotis ; Bock, Henry. / Angular dependence of surfactant-mediated forces between carbon nanotubes. In: Journal of Physical Chemistry B. 2012 ; Vol. 116, No. 51. pp. 14869-14875.
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Angular dependence of surfactant-mediated forces between carbon nanotubes. / Mueter, Dirk; Angelikopoulos, Panagiotis; Bock, Henry.

In: Journal of Physical Chemistry B, Vol. 116, No. 51, 27.12.2012, p. 14869-14875.

Research output: Contribution to journalArticle

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AU - Bock, Henry

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N2 - We employ dissipative particle dynamics to examine surfactant-mediated forces between two carbon nanotubes. Calculations are performed varying both the distance and the angle between the nanotubes. For small distances, a repulsive region is observed, followed by an overall attractive interval with strong oscillations in the force. Decreasing the angle between the tubes leads to a steady increase in the force, but the relative dependence on the separation distance is preserved. We find that the force scales linearly with the size of the overlap area between the tubes. This allows us to express the angle dependence by a simple equation, whereas the distance dependence is represented by a master curve. For the parallel case, the behavior is significantly different.

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KW - DRUG

KW - AQUEOUS DISPERSIONS

KW - FABRICATION

KW - MECHANICAL-PROPERTIES

KW - SIMULATION

KW - MOLECULAR-DYNAMICS

KW - ANGLE NEUTRON-SCATTERING

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