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Ruoff, Rodney S.
Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Next generation carbons, ultrathin sp3-bonded carbon sheets, negative curvature (‘Schwartzites’) carbons, sp3/sp2 hybrid carbon materials, model compounds for novel carbon materials, reaction mechanisms

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Orientation-Dependent Strain Relaxation and Chemical Functionalization of Graphene on a Cu(111) Foil

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dc.contributor.author Li, Bao-Wen ko
dc.contributor.author Luo, Da ko
dc.contributor.author Zhu, Liyan ko
dc.contributor.author Zhang, Xu ko
dc.contributor.author Jin, Sunghwan ko
dc.contributor.author Huang, Ming ko
dc.contributor.author Ding, Feng ko
dc.contributor.author Ruoff, Rodney S. ko
dc.date.available 2018-03-29T08:36:35Z -
dc.date.created 2018-03-29 ko
dc.date.issued 2018-03 ko
dc.identifier.citation ADVANCED MATERIALS, v.30, no.10, pp.1706504 ko
dc.identifier.issn 0935-9648 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/23876 -
dc.description.abstract 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. ko
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Orientation-Dependent Strain Relaxation and Chemical Functionalization of Graphene on a Cu(111) Foil ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85040672213 ko
dc.identifier.wosid 000426720400029 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/adma.201706504 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.201706504 ko
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