Soliton dynamics in a solid lubricant during sliding friction (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Soliton dynamics in a solid lubricant during sliding friction (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1103/PhysRevB.89.094301 (literal)

Alternative label

• Vigentini, Anna; Van Hattem, Barbara; Diato, Elena; Ponzellini, Paolo; Meledina, Tommaso; Vanossi, Andrea; Santoro, Giuseppe; Tosatti, Erio; Manini, Nicola (2014)
  Soliton dynamics in a solid lubricant during sliding friction
  in Physical review. B, Condensed matter and materials physics
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Vigentini, Anna; Van Hattem, Barbara; Diato, Elena; Ponzellini, Paolo; Meledina, Tommaso; Vanossi, Andrea; Santoro, Giuseppe; Tosatti, Erio; Manini, Nicola (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 89 (literal)

Rivista

• Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 13 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 9 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• University of Milan; CNR IOM Democritos Natl Simulat Ctr; International School for Advanced Studies; Abdus Salam International Centre for Theoretical Physics (literal)

Titolo

• Soliton dynamics in a solid lubricant during sliding friction (literal)

Abstract

• Recent highly idealized model studies of lubricated nanofriction for two crystalline sliding surfaces with an interposed thin solid crystalline lubricant layer showed that the overall relative velocity of the lubricant v(lub)/v(slider) depends only on the ratio of the lattice spacings, and retains a strictly constant value even when system parameters are varied within a wide range. This peculiar \"quantized\" dynamical locking was understood as due to the sliding-induced motion of misfit dislocations, or soliton structures. So far the practical relevance of this concept to realistic sliding three-dimensional crystals has not been demonstrated. In this work, by means of classical molecular dynamics simulations and theoretical considerations, we realize a realistic three-dimensional crystal-lubricant-crystal geometry. Results show that the flux of lubricant particles associated with the advancing soliton lines gives rise here too to a quantized-velocity ratio. Moreover, depending on the interface lattice spacing mismatch, both forward and backward quantized motion of the lubricant is predicted. The persistence under realistic conditions of the dynamically pinned state and quantized sliding is further investigated by varying sliding speed, temperature, load, and lubricant film thickness. The possibilities of experimental observation of quantized sliding are also discussed. (literal)

Prodotto di

• MD.P06.025.001 Teoria, simulazione e progetto assistito dal calcolatore di materiali nanostrutturati (MD.P06.025.002) (Modulo)

Autore CNR

• GIUSEPPE ERNESTO SANTORO (Persona)
• ANDREA VANOSSI (Persona)
• ERIO TOSATTI (Unità di personale esterno)

Incoming links:

Autore CNR di

• ERIO TOSATTI (Unità di personale esterno)
• GIUSEPPE ERNESTO SANTORO (Persona)
• ANDREA VANOSSI (Persona)

Prodotto

• MD.P06.025.001 Teoria, simulazione e progetto assistito dal calcolatore di materiali nanostrutturati (MD.P06.025.002) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review. B, Condensed matter and materials physics (Rivista)