Nanostructured surfaces

Frictional anisotropy of Al, Pt and Pd nanoparticles on a graphene substrate
Zakharov M.V. 1, Khomenko A.V. 1
1 Sumy State University, 2 Rimsky Korsakov Str., Sumy, 40007, Ukraine. 
E-mail: m.zakharov@mss.sumdu.edu.ua

Friction and wear on the nanoscale are increasingly met in technological applications [1-3]. Friction anisotropy has been studied using molecular dynamics over the last three decades due to the current trends in the direction of intensive miniaturization of various devices with mobile components.
The program for simulation motion of the metallic nanoparticles was created using the CUDA-software [4]. Modeling is carried out using the molecular dynamics method. The first step of the simulation is the creation of a nanoparticle on the surface of graphene. The second step is the cooling system using the thermostat. During next phase of the simulation the constant shear force was applied to the nanoparticles along zigzag edge of the graphene plane and nanoparticle is moving. At the last stage, the friction force is measured at different angles. The graphics of the angular dependence of the friction force at the different temperatures were built. The structure of the nanoparticles is analyzed by the radial distribution function.

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