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Mechanical cleaning of graphene using in situ electron microscopy

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Mechanical cleaning of graphene using in situ electron microscopy

dc.contributor.author	Schweizer, Peter
dc.contributor.author	Dolle, Christian
dc.contributor.author	Dasler, Daniela
dc.contributor.author	Abellán Sáez, Gonzalo
dc.contributor.author	Hauke, Frank
dc.contributor.author	Hirsch, Andreas
dc.contributor.author	Spiecker, Erdmann
dc.date.accessioned	2021-05-24T14:39:34Z
dc.date.available	2021-05-24T14:39:34Z
dc.date.issued	2020
dc.identifier.citation	Schweizer, Peter Dolle, Christian Dasler, Daniela Abellán Sáez, Gonzalo Hauke, Frank Hirsch, Andreas Spiecker, Erdmann 2020 Mechanical cleaning of graphene using in situ electron microscopy Nature Communications 11 1 1743
dc.identifier.uri	https://hdl.handle.net/10550/79383
dc.description.abstract	Avoiding and removing surface contamination is a crucial task when handling specimens in any scientific experiment. This is especially true for two-dimensional materials such as graphene, which are extraordinarily affected by contamination due to their large surface area. While many efforts have been made to reduce and remove contamination from such surfaces, the issue is far from resolved. Here we report on an in situ mechanical cleaning method that enables the site-specific removal of contamination from both sides of two dimensional membranes down to atomic-scale cleanliness. Further, mechanisms of re-contamination are discussed, finding surface-diffusion to be the major factor for contamination in electron microscopy. Finally the targeted, electron-beam assisted synthesis of a nanocrystalline graphene layer by supplying a precursor molecule to cleaned areas is demonstrated.
dc.language.iso	eng
dc.relation.ispartof	Nature Communications, 2020, vol. 11, num. 1, p. 1743
dc.subject	Materials
dc.title	Mechanical cleaning of graphene using in situ electron microscopy
dc.type	journal article	es_ES
dc.date.updated	2021-05-24T14:39:35Z
dc.identifier.doi	10.1038/s41467-020-15255-3
dc.identifier.idgrec	146129
dc.rights.accessRights	open access	es_ES