• Corpus ID: 203626532

Low-Temperature Friction of Suspended Graphene: Negative friction?

@article{Wang2019LowTemperatureFO,
  title={Low-Temperature Friction of Suspended Graphene: Negative friction?},
  author={Zhao Wang},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  year={2019}
}
  • Zhao Wang
  • Published 2 October 2019
  • Physics
  • arXiv: Mesoscale and Nanoscale Physics
Using molecular dynamics simulations, we probe a suspended graphene layer by a diamond-like-carbon tip at various temperatures. The force acting on the tip in the sliding direction is measured to be negative at liquid-helium temperature. This negative force is found to be associated with a spontaneous lateral oscillation of the suspended graphene in favor of a low interface potential corrugation. Our hypothesis is that, at low temperature, this oscillation induces an important hidden… 
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References

SHOWING 1-10 OF 45 REFERENCES

Superlubricity of molybdenum disulfide subjected to large compressive strains

The friction between a molybdenum disulphide (MoS2) nanoflake and a MoS2 substrate was analyzed using a modified Tomlinson model based on atomistic force fields. The calculations performed in the…

Twisted bilayer graphene as a linear nanoactuator

Temperature-dependent negative friction coefficients in superlubric molybdenum disulfide thin films

Negative friction coefficient in microscale graphite/mica layered heterojunctions

The results for the interface between graphite and muscovite mica heterojunction demonstrate a robust negative friction coefficient both in loading and unloading processes, and the underlying mechanism is a synergetic and nontrivial redistribution of water molecules at the interface, leading to larger density and more ordered structure of the confined subnanometer-thick water film.

Dramatic effect of a transverse electric field on frictional properties of graphene

  • Zhao Wang
  • Physics
    Journal of Physics D: Applied Physics
  • 2019
I study the influence of transverse electric fields on the interfacial forces between a graphene layer and a carbon nanotube tip by means of atomistic simulations, in which a Gaussian regularized…

Selective Conduction of Organic Molecules via Free-Standing Graphene

  • Zhao Wang
  • Physics, Chemistry
    The Journal of Physical Chemistry C
  • 2019
A race is held between 10 species of organic gas molecules on a graphene substrate driven by thermal gradients via molecular dynamics. Fast conduction of the molecules is observed with selectivity…

Chirality-dependent motion transmission between aligned carbon nanotubes

Nanotribology and MEMS

A modified Tersoff potential for pure and hydrogenated diamond-like carbon

Model calculations of superlubricity of graphite

In this paper, friction between a finite, nanometer-sized, rigid graphite flake and a rigid graphite surface is analyzed theoretically in the framework of a modified Tomlinson model. Lateral forces…