Journal
NANO
Volume 11, Issue 9, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S179329201650096X
Keywords
Frictional characteristics; graphene layers; molecular dynamics simulation; stick-slip friction
Funding
- Ministry of Science and Technology of Taiwan [MOST 103-2221-E-151-001-MY3, MOST 103-2221-E-151-007-MY3, MOST 104-2221-E-168-026]
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Molecular dynamics simulations of an atomic force microscope (AFM) probe scanning the surface of a five-layer graphene were conducted. The AFM-like scanning probe was modeled by a capped single-wall carbon nanotube. Note that interference with the graphene surface induced frictional behavior; moreover, the effects on the friction system of scanning velocity, probe direction and temperature were investigated. Wrinkling of the graphene surface became more apparent at higher temperatures, while stick-slip friction was more apparent at a lower temperature and a slower scanning velocity. The friction coefficient of the system was approximately 0.001.
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