Journal ArticleDOI
Open and closed edges of graphene layers.
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TLDR
A series of tilting experiments proves that the zigzag and armchair edges are mostly closed between adjacent graphene layers, and the number of dangling bonds is therefore minimized.Abstract:
Edge structures of thermally treated graphite have been studied by means of atomically resolved high-resolution TEM. The method for the determination of a monolayer or more than one layer graphene sheets is established. A series of tilting experiments proves that the zigzag and armchair edges are mostly closed between adjacent graphene layers, and the number of dangling bonds is therefore minimized. Surprisingly bilayer graphene often exhibits AA stacking and is very hard to distinguish from a single graphene layer. Open edge structures with carbon dangling bonds can be found only in a local area where the closed (folding) edge is partially broken.read more
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Production, properties and potential of graphene
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Graphene and graphite nanoribbons: Morphology, properties, synthesis, defects and applications
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The electronic properties of bilayer graphene.
Edward McCann,Mikito Koshino +1 more
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Journal ArticleDOI
The Role of Oxygen during Thermal Reduction of Graphene Oxide Studied by Infrared Absorption Spectroscopy
Muge Acik,Geunsik Lee,Cecilia Mattevi,Adam Pirkle,Robert M. Wallace,Manish Chhowalla,Kyeongjae Cho,Yves J. Chabal +7 more
TL;DR: In this article, the role of trapped water and the evolution of oxygen during annealing of reduced graphene oxide (GO) is investigated, and the interactions between randomly arranged nearby oxygen species are found to affect the spectral response (red and blue shifts) and the overall chemistry during the reduction process.
Journal ArticleDOI
DNA translocation through graphene nanopores.
Christopher A. Merchant,Ken Healy,Meni Wanunu,Vishva Ray,Neil Peterman,John Bartel,Michael D. Fischbein,Kimberly Venta,Zhengtang Luo,A. T. Charlie Johnson,Marija Drndic +10 more
TL;DR: In this article, DNA translocations through nanopores created in graphene membranes are reported. But, the nanopores are made from 1-5 nm thick graphene membranes with electron-beam sculpted nanopores from 5 to 10 nm in diameter.