title: Strain-induced friction anisotropy between graphene and molecular liquids.
abstract: In this paper, we study the friction behavior of molecular liquids with anisotropically strained graphene. Due to the changes of lattice and the potential energy surface, the friction is orientation dependent and can be computed by tensorial Green-Kubo formula. Simple quantitative estimations are also proposed for the zero-time response and agree reasonably well with the molecular dynamics results. From simulations, we can obtain the information of structures, dynamics of the system, and study the influence of strain and molecular shapes on the anisotropy degree. It is found that unilateral strain can increase friction in all directions but the strain direction is privileged. Numerical evidences also show that nonspherical molecules are more sensitive to strain and give rise to more pronounced anisotropy effects.
authors.affiliation: Laboratoire Modelisation et Simulation Multi Echelle, UMR 8208 CNRS, Université Paris-Est, 5 Boulevard Descartes, 77454 Marne-la-Vallée Cedex 2, France.
authors.forename: Meng
authors.initials: M
authors.lastname: Liao
authors.affiliation: Laboratoire Modelisation et Simulation Multi Echelle, UMR 8208 CNRS, Université Paris-Est, 5 Boulevard Descartes, 77454 Marne-la-Vallée Cedex 2, France.
authors.forename: Quy-Dong
authors.initials: QD
authors.lastname: To
authors.affiliation: Laboratoire Modelisation et Simulation Multi Echelle, UMR 8208 CNRS, Université Paris-Est, 5 Boulevard Descartes, 77454 Marne-la-Vallée Cedex 2, France.
authors.forename: Céline
authors.initials: C
authors.lastname: Léonard
authors.affiliation: Laboratoire Modelisation et Simulation Multi Echelle, UMR 8208 CNRS, Université Paris-Est, 5 Boulevard Descartes, 77454 Marne-la-Vallée Cedex 2, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Monchiet
authors.affiliation: Computational Physics Laboratory, Institute ofTechnology, Vietnam National University, Ho Chi Minh City, Vietnam.
authors.forename: Van-Hoang
authors.initials: VH
authors.lastname: Vo