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Paper   IPM / Physic / 14297
School of Physics
  Title:   Diffusion and self-assembly of C60 molecules on monolayer graphyne sheets
  Author(s): 
1.  M. Ozmaian
2.  A. Fathizadeh
3.  M. Jalalvand
4.  M.R. Ejtehadi
5.  S.M. Vaez Allaei
  Status:   Published
  Journal: Scientific Reports
  Vol.:  6
  Year:  2016
  Pages:   21910
  Supported by:  IPM
  Abstract:
The motion of a fullerene (C60) on 5 different types of graphyne is studied by all-atom molecular dynamics simulations and compared with former studies on the motion of C60 on graphene. The motion shows a diffusive behavior which consists of either a continuous motion or discrete movements between trapping sites depending on the type of the graphyne sheet. For graphyne-4 and graphyne-5, fullerenes could detach from the surface of the graphyne sheet at room temperature which was not reported for similar cases on graphene sheets. Collective motion of a group of fullerenes interacting with a graphyne studied and it is shown that fullerenes exhibit stable assemblies. Depending on the type of graphyne, these assemblies can have either single or double layers. The mobility of the assembled structures is also dependent on the type of the graphyne sheet. The observed properties of the motion suggests novel applications for the complexes of fullerene and monolayer graphynes.

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