Effect of hydrogen adsorption on the atomic-scale wear of few-layer graphene

Molecular dynamics simulation method was used to study the influence of hydrogen adsorption on the wear process of few-layer graphene. We observed that hydrogen atoms are prone to adsorb on three distinct regions around the wear cavity of graphene, and they have different influence mechanisms on the wear process of graphene. The absorbed hydrogen can promote the breaking of stretched carbon chains, or change the propagation direction of wear...