TY  - JOUR
AU  - Khomenko, A. V.
AU  - Prodanov, N. V.
AU  - Persson, Bo
TI  - Atomistic modelling of friction of Cu and Au nanoparticles adsorbed on graphene
JO  - Condensed matter physics
VL  - 16
IS  - 3
SN  - 1607-324X
CY  - Lviv
PB  - Inst.
M1  - FZJ-2015-03795
SP  - 33401
PY  - 2013
AB  - We present classical molecular dynamics calculations of the behavior of copper and gold nanoparticles on a graphene sheet, sheared with a constant applied force Fa. The force Fs acting on the particle from the substrate depends on the material of the nanoparticles (Au or Cu), and exhibits a sawtooth dependency on time, which we attribute to local commensurability between the metal nanoparticle surface atomic positions with the graphene lattice. The time-averaged value of Fs (the friction force) acting on Au nanoparticles increases linearly with the contact area, having slopes close to the experimentally observable ones. A qualitative model is proposed to explain the observed results. 
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000325304200010
DO  - DOI:10.5488/CMP.16.33401
UR  - https://juser.fz-juelich.de/record/201500
ER  -