Velocity plateaus and jumps in carbon nanotube sliding (Articolo in rivista)

Type
Label
  • Velocity plateaus and jumps in carbon nanotube sliding (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Zhang, XH; Tartaglino, U; Santoro, GE; Tosatti, E (2007)
    Velocity plateaus and jumps in carbon nanotube sliding
    in Surface science
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Zhang, XH; Tartaglino, U; Santoro, GE; Tosatti, E (literal)
Pagina inizio
  • 3693 (literal)
Pagina fine
  • 3696 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 601 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • SISSA, I-34014 Trieste, Italy; Democritos Natl Simulat Ctr, CNR, INFM, I-34014 Trieste, Italy; Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China; Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China; Int Ctr Theoret Phys, I-34014 Trieste, Italy (literal)
Titolo
  • Velocity plateaus and jumps in carbon nanotube sliding (literal)
Abstract
  • The friction between concentric carbon nanotubes sliding one inside the other has been widely studied and simulated, but not so far using external force as the driving variable. Our molecular dynamics (MD) simulations show that as the pulling force grows, the sliding velocity increases by jumps and plateaus rather than continuously as expected. Dramatic friction peaks [similar to that recently noted by P. Tangney, M.L. Cohen, S.G. Louie, Phys. Rev. Lett. 97 (2006) 195901] which develop around some preferential sliding velocities, are at the origin of this phenomenon. The (stable) rising edge of the peak produces a velocity plateau; the (unstable) dropping edge produces a jump to the nearest stable branch. The outcome is reminiscent of conduction in ionized gases, the plateau corresponding to a current stabilization against voltage variations, the jump corresponding to a discharge or breakdown. (c) 2007 Elsevier B.V. All rights reserved. (literal)
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