Transforming amorphous carbon into graphene by current- induced annealing
نویسندگان
چکیده
ABSTRACT: We report on the catalyst-free growth of graphene from amorphous carbon (a-C) by current-induced annealing. This is a novel mechanism that we could witness by in-situ transmission electron microscopy and simulate with molecular dynamics calculations. We observe that small a-C clusters on a graphene substrate rearrange and crystallize into graphene patches due to the high temperatures involved and van-der-Waals interactions with the substrate. Furthermore, we report that in the presence of a-C, graphene can grow from the borders of holes in graphene, healing them out completely. These findings open up new avenues for bottom-up engineering of graphene-based devices.
منابع مشابه
Understanding the catalyst-free transformation of amorphous carbon into graphene by current-induced annealing
Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands, IFW Dresden, Postfach 270116, 01171 Dresden, Germany, Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany, School of Materials Engineering, Purdue University, West Lafayette, IN, USA, Division of IT Convergence Engineering, POSTECH...
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