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Susmit Singha Roy and Michael S. Arnold Improving Graphene Diffusion Barriers via Stacking Multiple Layers and Grain Size Engineering Advanced Functional Materials 23

Article first published online: 26 FEB 2013 | DOI: 10.1002/adfm.201203179

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It is demonstrated that atomistic defects/grain boundaries in monolayer-graphene, grown via chemical vapor deposition, can act as diffusion pathways. Transport through these pathways can be substantially reduced by either independently growing separate membranes of graphene and then stacking them together to decrease the line-of-sight pathways or increasing the internucleation distance/grain-size of the graphene monolayer to reduce the grain boundary density.

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