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Search: WFRF:(Gavrilko V G) > (2011)

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1.
  • Dolbin, Alexander V., et al. (author)
  • Quantum phenomena in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with 3He. A giant isotope effect
  • 2011
  • In: Low temperature physics (Woodbury, N.Y., Print). - : American Institute of Physics (AIP). - 1063-777X .- 1090-6517. ; 37:6, s. 544-546
  • Journal article (peer-reviewed)abstract
    • The radial thermal expansion αr of bundles of single-walled carbon nanotubes saturated with 3He up to the molar concentration 9.4% has been investigated in the temperature interval 2.1–9.5 K by high-sensitivity capacitance dilatometry. In the interval 2.1–7 K a negative αr was observed, with a magnitude which exceeded the largest negative αr values of pure and 4He-saturated nanotubes by three and two orders of magnitude, respectively. The contributions of the two He isotope impurities to the negative thermal expansion of the nanotube bundles are most likely connected with the spatial redistribution of 4He and 3He atoms by tunneling at the surface and inside nanotube bundles. The isotope effect turned out to be huge, probably owing to the higher tunneling probability of 3He atoms.
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2.
  • Dolbin, Alexander V, et al. (author)
  • The effect of O2 impurities on the low-temperature radial thermal expansion of bundles of closed single-walled carbon nanotubes
  • 2011
  • In: Low temperature physics (Woodbury, N.Y., Print). - : American Institute of Physics (AIP). - 1063-777X .- 1090-6517. ; 37:4, s. 343-346
  • Journal article (peer-reviewed)abstract
    • The effect of oxygen impurities upon the radial thermal expansion αr of bundles of closed single-walled carbon nanotubes has been investigated in the temperature interval 2.2–48 K by the dilatometric method. Saturation of bundles of nanotubes with oxygen caused an increase in the positive αr-values in the whole interval of temperatures used. Also, several peaks appeared in the temperature dependence αr(T) above 20 K. The low temperature desorption of oxygen from powders consisting of bundles of single-walled nanotubes with open and closed ends has been investigated.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Sundqvist, Bertil (2)
Dolbin, Alexander V. (2)
Manzhelii, Vadim G. (2)
Gavrilko, V.G. (1)
Esel'son, V.B. (1)
Vinnikov, N A (1)
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Popov, S.N. (1)
Esel'son, VB (1)
Gavrilko, VG (1)
Popov, SN (1)
Vinnikov, NA (1)
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University
Umeå University (2)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Year
2011 (2)Undo refine

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