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- Publisher Website: 10.1088/2053-1583/aaf1e7
- Scopus: eid_2-s2.0-85059246162
- WOS: WOS:000452376400001
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Article: Linking interlayer twist angle to geometrical parameters of self-assembled folded graphene structures
Title | Linking interlayer twist angle to geometrical parameters of self-assembled folded graphene structures |
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Authors | |
Keywords | graphene folds graphene ribbons twisted bilayer grapheme |
Issue Date | 2019 |
Citation | 2D Materials, 2019, v. 6, n. 1, article no. 015021 How to Cite? |
Abstract | Thin adhesive films can be removed from substrates, torn, and folded in distinct geometries under external driving forces. In two-dimensional materials, however, these processes can be self-driven as shown in previous studies on folded twisted bilayer graphene nanoribbons produced by spontaneous tearing and peeling from a substrate. Here, we use atomic force microscopy techniques to generate and characterize the geometrical structure of naturally self-grown folded nanoribbon structures. Measurements of nanoribbon width and interlayer separation reveal similar twist-angle dependences possibly caused by the anisotropy in the bilayer potential. In addition, analysis of the data shows an unexpected correlation between the height of the folded arc edge - parameterized by a radius R - , and the ribbon width, suggestive of a self-growth process driven by a variable cross-sectional shape. These observations are well described by an energy minimization model that includes the bilayer adhesion energy density as represented by a distance dependent Morse potential. We obtain an analytical expression for the radius R versus the ribbon width that predicts a renormalized bending rigidity and stands in good agreement with experimental observations. The newly found relation between these geometrical parameters suggests a mechanism for tailored growth of folded twisted bilayer graphene- a platform for many intriguing physics phenomena. |
Persistent Identifier | http://hdl.handle.net/10722/335322 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Rode, Johannes C. | - |
dc.contributor.author | Zhai, Dawei | - |
dc.contributor.author | Belke, Christopher | - |
dc.contributor.author | Hong, Sung J. | - |
dc.contributor.author | Schmidt, Hennrik | - |
dc.contributor.author | Sandler, Nancy | - |
dc.contributor.author | Haug, Rolf J. | - |
dc.date.accessioned | 2023-11-17T08:24:55Z | - |
dc.date.available | 2023-11-17T08:24:55Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | 2D Materials, 2019, v. 6, n. 1, article no. 015021 | - |
dc.identifier.uri | http://hdl.handle.net/10722/335322 | - |
dc.description.abstract | Thin adhesive films can be removed from substrates, torn, and folded in distinct geometries under external driving forces. In two-dimensional materials, however, these processes can be self-driven as shown in previous studies on folded twisted bilayer graphene nanoribbons produced by spontaneous tearing and peeling from a substrate. Here, we use atomic force microscopy techniques to generate and characterize the geometrical structure of naturally self-grown folded nanoribbon structures. Measurements of nanoribbon width and interlayer separation reveal similar twist-angle dependences possibly caused by the anisotropy in the bilayer potential. In addition, analysis of the data shows an unexpected correlation between the height of the folded arc edge - parameterized by a radius R - , and the ribbon width, suggestive of a self-growth process driven by a variable cross-sectional shape. These observations are well described by an energy minimization model that includes the bilayer adhesion energy density as represented by a distance dependent Morse potential. We obtain an analytical expression for the radius R versus the ribbon width that predicts a renormalized bending rigidity and stands in good agreement with experimental observations. The newly found relation between these geometrical parameters suggests a mechanism for tailored growth of folded twisted bilayer graphene- a platform for many intriguing physics phenomena. | - |
dc.language | eng | - |
dc.relation.ispartof | 2D Materials | - |
dc.subject | graphene folds | - |
dc.subject | graphene ribbons | - |
dc.subject | twisted bilayer grapheme | - |
dc.title | Linking interlayer twist angle to geometrical parameters of self-assembled folded graphene structures | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1088/2053-1583/aaf1e7 | - |
dc.identifier.scopus | eid_2-s2.0-85059246162 | - |
dc.identifier.volume | 6 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | article no. 015021 | - |
dc.identifier.epage | article no. 015021 | - |
dc.identifier.eissn | 2053-1583 | - |
dc.identifier.isi | WOS:000452376400001 | - |