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dc.contributor.author
Annevelink, Emil
dc.contributor.author
Wang, Zhu-Jun
dc.contributor.author
Dong, Guocai
dc.contributor.author
Johnson, Harley T.
dc.contributor.author
Pochet, Pascal
dc.date.accessioned
2021-08-09T15:52:37Z
dc.date.available
2021-08-09T02:54:25Z
dc.date.available
2021-08-09T15:52:37Z
dc.date.issued
2021-09-15
dc.identifier.issn
1359-6454
dc.identifier.other
10.1016/j.actamat.2021.117156
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/500018
dc.description.abstract
Multiscale microscopy spanning the atomistic, moiré, and meso scales has enabled engineering the equilibrium structure of graphene. However, temporal restrictions on in-operando imaging techniques make the moiré scale the finest accessible spatial resolution, thereby limiting our understanding of atomistic mechanisms of non-equilibrium processes in graphene. In order to include atomic scale features with in-operando microscopy, we develop a moiré metrology theory that infers the atomic scale structure from the moiré scale, creating a bridge to in-operando microscopy. The theory is based on atomic scale models that govern the atomistic structure and are promoted to the moiré scale by simulation. We introduce this through a relevant application: nuclei coalescence of graphene during chemical vapor deposition. We develop two mechanistic atomic scale models that govern the propagation and structure of grain boundaries, illuminating how edge dislocations, disconnections, and grain boundaries form from the attachment of individual dimers. The atomistic models are brought to the moiré scale through bond convolution simulations and the resultant moiré metrology theory is tested on results from in-operando scanning tunneling microscopy. By showing that we can identify atomic scale defects from moiré patterns, we highlight how moiré metrology can enable decision making during growth from in-operando observation of graphene structure, paving the way for the design of graphene atomistic structure under scalable synthesis conditions.
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.subject
Graphene growth
en_US
dc.subject
Grain boundary
en_US
dc.subject
Coalescence
en_US
dc.subject
Moiré metrology
en_US
dc.subject
In-operando STM
en_US
dc.title
A moiré theory for probing grain boundary structure in graphene
en_US
dc.type
Journal Article
dc.date.published
2021-07-21
ethz.journal.title
Acta Materialia
ethz.journal.volume
217
en_US
ethz.journal.abbreviated
Acta Mater
ethz.pages.start
117156
en_US
ethz.size
11 p.
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Kidlington
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2021-08-09T02:54:34Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-08-09T15:52:45Z
ethz.rosetta.lastUpdated
2021-08-09T15:52:45Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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