Journal
CARBON
Volume 50, Issue 8, Pages 3055-3063Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2012.02.092
Keywords
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Funding
- National Natural Science Foundation of China (NSFC) [11023001, 11021262]
- Chinese Academy of Sciences (CAS)
- Supercomputing Center of Chinese Academy of Sciences (SCCAS)
- Shanghai Supercomputer Center (SSC)
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The binding, peeling and folding behavior of graphene on different surfaces of single crystal copper were examined theoretically. We show that the binding energy is the highest on the Cu(111), and follows the order of Cu(111) > (100) > (110) > (112). Conventional theory is capable of capturing the dynamic process of graphene peeling seen from molecular dynamics simulations. We show that the number of graphene layers on Cu surfaces could be distinguished by performing simple peeling tests. Further investigation of the folding/unfolding of graphene on Cu surfaces shows that Cu(111) favors the growth of monolayer graphene. These observations on the interaction between graphene with single crystal Cu surfaces might provide guidelines for improving graphene fabrication. (C) 2012 Elsevier Ltd. All rights reserved.
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