Study on the rotational friction characteristics of bilayer graphene with different defect types
With molecular dynamic simulation,an atomic model is constructed to study the effects of defect type,concentration,size effect,and graphene stacking method on its interlayer rotational friction characteristics.The friction reduction effect of strain engineering was also explored.The results show that defect type and stacking method have a more significant influence on rotational friction char-acteristics,with defect type having the highest degree of influence.Introducing tensile strain to the underlying graphene causes its rotational frictional resistance to decay,with the decreasing moment trend being most similar for the single vacancy defect and defect-free model.The compressive strain of the underlying graphene was also studied.It is found that it increases interlayer friction within a certain range.This study further improves the theory of interlayer rotational friction properties of defective gra-phene.
万方数据
维普
