期刊
EUROPEAN PHYSICAL JOURNAL B
卷 70, 期 4, 页码 449-459出版社
SPRINGER
DOI: 10.1140/epjb/e2009-00239-7
关键词
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资金
- MIUR-PON
- Italian National Research Council (CNR)
Using a tight-binding atomistic simulation, we simulate the recent atomic-force microscopy experiments probing the slipperiness of graphene flakes made slide against a graphite surface. Compared to previous theoretical models, where the flake was assumed to be geometrically perfect and rigid, while the substrate is represented by a static periodic potential, our fully-atomistic model includes quantum mechanics with the chemistry of bond breaking and bond formation, and the flexibility of the flake. These realistic features, include in particular the crucial role of the flake rotation in determining the static friction, in qualitative agreement with experimental observations.
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