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Ding, Feng
IBS - Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Theoretical methods development for materials studies.

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Stacking sequence and interlayer coupling in few-layer graphene revealed by in situ imaging

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Title
Stacking sequence and interlayer coupling in few-layer graphene revealed by in situ imaging
Author
Wang, Zhu-JunDong, JichenCui, YiEres, GyulaTimpe, OlafFu, QiangDing, FengSchloegl, R.Willinger, Marc-Georg
Issue Date
201610
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v.7, no., pp.13256 -
Abstract
In the transition from graphene to graphite, the addition of each individual graphene layer modifies the electronic structure and produces a different material with unique properties. Controlled growth of few-layer graphene is therefore of fundamental interest and will provide access to materials with engineered electronic structure. Here we combine isothermal growth and etching experiments with in situ scanning electron microscopy to reveal the stacking sequence and interlayer coupling strength in few-layer graphene. The observed layer-dependent etching rates reveal the relative strength of the graphene-graphene and graphene-substrate interaction and the resulting mode of adlayer growth. Scanning tunnelling microscopy and density functional theory calculations confirm a strong coupling between graphene edge atoms and platinum. Simulated etching confirms that etching can be viewed as reversed growth. This work demonstrates that real-time imaging under controlled atmosphere is a powerful method for designing synthesis protocols for sp(2) carbon nanostructures in between graphene and graphite.
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DOI
http://dx.doi.org/10.1038/ncomms13256
ISSN
2041-1723
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