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Physica Status Solidi (B) Basic ResearchVolume 250, Issue 12, December 2013, Pages 2535-2538

Anisotropy of thermal expansion of helically coiled carbon nanotubes(Article)

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  • Faculty of Physics, NanoLab, University of Belgrade, Studentski trg 12, Belgrade, 11001, Serbia

Abstract

Four types of linear thermal expansion coefficients of helically coiled carbon nanotubes (radial tubular, axial tubular, helical radial and helical axial) are numerically evaluated by minimizing Helmholtz free energy at fixed temperatures. Isotropy of thermal expansion of tubular parameters and high anisotropy of thermal expansion of the coil parameters are predicted. The latter is interpreted by spring like behavior and extreme elasticity of helically coiled carbon nanotubes. Brenner interatomic potential for carbon is used. Applied also is the line group symmetry which together with Hooke-Jeeves algorithm made the calculations highly efficient. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Author keywords

Coiled carbon nanotubesHelmholtz free energyThermal expansion coefficients

Indexed keywords

Engineering controlled terms:AnisotropyCarbon nanotubesExpansionFree energy
Engineering uncontrolled termsBrenner interatomic potentialsCoiled carbon nanotubeFixed temperatureGroup symmetriesHigh anisotropyHooke-jeeves algorithmsLinear thermal expansion coefficientsThermal expansion coefficients
Engineering main heading:Thermal expansion
  • ISSN: 03701972
  • Source Type: Journal
  • Original language: English
  • DOI: 10.1002/pssb.201300069
  • Document Type: Article
  • Publisher: Wiley-VCH Verlag

  Popović, Z.P.; Faculty of Physics, NanoLab, University of Belgrade, Studentski trg 12, Serbia;
© Copyright 2020 Elsevier B.V., All rights reserved.

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