Orientation-Dependent Strain Relaxation and Chemical Functionalization of Graphene on a Cu(111) Foil
Cited 0 times inCited 0 times in
- Orientation-Dependent Strain Relaxation and Chemical Functionalization of Graphene on a Cu(111) Foil
- Li, Bao-Wen; Luo, Da; Zhu, Liyan; Zhang, Xu; Jin, Sunghwan; Huang, Ming; Ding, Feng; Ruoff, Rodney S.
- chemical functionalization; Cu(111); wrinkle‐ free graphene
- Issue Date
- WILEY-V C H VERLAG GMBH
- ADVANCED MATERIALS, v.30, no.10, pp.1706504 -
- Epitaxial graphene grown on single crystal Cu(111) foils by chemical vapor deposition is found to be free of wrinkles and under biaxial compressive strain. The compressive strain in the epitaxial regions (0.25-0.40%) is higher than regions where the graphene is not epitaxial with the underlying surface (0.20-0.25%). This orientation-dependent strain relaxation is through the loss of local adhesion and the generation of graphene wrinkles. Density functional theory calculations suggest a large frictional force between the epitaxial graphene and the Cu(111) substrate, and this is therefore an energy barrier to the formation of wrinkles in the graphene. Enhanced chemical reactivity is found in epitaxial graphene on Cu(111) foils as compared to graphene on polycrystalline Cu foils for certain chemical reactions. A higher compressive strain possibly favors lowering the formation energy and/or the energy gap between the initial and transition states, either of which can lead to an increase in chemical reactivity.
- ; Go to Link
Appears in Collections:
- SNS_Journal Papers
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.