Moiré pattern at graphene/Al (111) interface: Experiment and simulation

Materials & Design

Fei Wang¹  Shuang Zhang²  Dongjun He²  Ping Huang² 

[1] Corresponding author.;State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an City 710049, PR China;

关键词: Graphene/Al (111) interface;    Large moiré pattern periodicity;    Interface interaction;    Molecular dynamics simulation;   

DOI  :  

来源: DOAJ

【 摘 要 】

Moiré pattern periodicity associated with interface interaction that reflects intrinsic interface characteristics strongly affects the electronic/chemical/mechanical properties in numerous metal/graphene systems. Despite intensive researches were conducted on graphene/Al composites, however, no moiré patterns have ever been reported in their graphene/Al interfaces. In the present study, through vacuum arc melting and suction casting technique, moiré pattern with unexpected large periodicity of ~8.9 nm has been observed at graphene/Al (111) interface for the first time. The moiré pattern periodicity with respect to rotation orientation angle was evaluated by theoretical calculation; and the formation process of the moiré pattern was investigated via molecular dynamics simulations. Thermal stress stimulated interface rotational growth was proposed to play a dominating role and a tentative interface interaction analysis concerned on the unusual moiré pattern at the graphene/Al (111) interface was illustrated. The experiments along with theoretical and simulation study focused on the moiré pattern formed at graphene/Al interface may path a way to tailor interface structures of graphene/metal materials systems

【 授权许可】

Unknown