Brand, Christian und Monazam, Mohammad R A und Mangler, Clemens und Lilach, Yigal und Cheshnovsky, Ori und Arndt, Markus und Kotakoski, Jani (2021) The morphology of doubly-clamped graphene nanoribbons. 2D Materials, 8 (2), 025035. IOP Publishing. doi: 10.1088/2053-1583/abe952. ISSN 2053-1583.
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Offizielle URL: http://dx.doi.org/10.1088/2053-1583/abe952
Kurzfassung
Understanding the response of micro/nano-patterned graphene to mechanical forces is instrumental for applications such as advanced graphene origami and kirigami. Here, we analyze free-standing nanoribbons milled into single-layer graphene by focused ion beam processing. Using transmission electron microscopy, we show that the length L of the structures determines their morphology. Nanoribbons with L below 300 nm remain mainly flat, whereas longer ribbons exhibit uni-axial crumpling or spontaneous scrolling, a trend that is well reproduced by molecular dynamics simulations. We measure the strain of the ribbons as well as their crystallinity by recording nanometer-resolved convergent beam electron diffraction maps, and show that the beam tails of the focused ion beam cause significant amorphization of the structures adjacent to the cuts. The expansive or compressive strain in the structures remains below 4%. Our measurements provide experimental constraints for the stability of free-standing graphene structures with respect to their geometry, providing guidelines for future applications of patterned graphene.
elib-URL des Eintrags: | https://elib.dlr.de/147930/ | ||||||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||
Titel: | The morphology of doubly-clamped graphene nanoribbons | ||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 24 Februar 2021 | ||||||||||||||||||||||||||||||||
Erschienen in: | 2D Materials | ||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||
Band: | 8 | ||||||||||||||||||||||||||||||||
DOI: | 10.1088/2053-1583/abe952 | ||||||||||||||||||||||||||||||||
Seitenbereich: | 025035 | ||||||||||||||||||||||||||||||||
Verlag: | IOP Publishing | ||||||||||||||||||||||||||||||||
ISSN: | 2053-1583 | ||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||
Stichwörter: | Graphene Scanning transmission electron microscopy Amorphization Morphology 2D materials Nanoribbons | ||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||||||
HGF - Programmthema: | keine Zuordnung | ||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R - keine Zuordnung | ||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - keine Zuordnung | ||||||||||||||||||||||||||||||||
Standort: | Ulm | ||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Quantentechnologien > Quantennanophysik | ||||||||||||||||||||||||||||||||
Hinterlegt von: | Brand, Christian | ||||||||||||||||||||||||||||||||
Hinterlegt am: | 03 Jan 2022 16:24 | ||||||||||||||||||||||||||||||||
Letzte Änderung: | 05 Dez 2023 07:48 |
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