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Temperature effects on the friction characteristics of graphene
Ist Teil von
Applied physics letters, 2015-07, Vol.107 (1)
Ort / Verlag
Melville: American Institute of Physics
Erscheinungsjahr
2015
Link zum Volltext
Quelle
AIP Journals Complete
Beschreibungen/Notizen
An atomic force microscope is used to study the nanoscale frictional characteristics of graphene exfoliated onto weakly adherent silica substrates. Different from the decrease in the friction force with temperature for Si tips sliding on silica substrates, the friction forces for the same tip sliding on a graphene surface have an increasing trend with temperature. Through exploring the morphologies of graphene in both suspended and supported states and at different temperatures, it is found that surface fluctuations are the main reason behind the suppression of the thermal lubrication, which leads to an increase in the friction force with temperature.