Mechanical cleaning of graphene using in situ electron microscopy
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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

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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.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.rights.uri info:eu-repo/semantics/openAccess
dc.source 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.subject Materials
dc.title Mechanical cleaning of graphene using in situ electron microscopy
dc.type info:eu-repo/semantics/article
dc.date.updated 2021-05-24T14:39:35Z
dc.identifier.doi https://doi.org/10.1038/s41467-020-15255-3
dc.identifier.idgrec 146129

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