Atomic level spatial variations of energy states along graphene edges
The local atomic bonding of carbon atoms around the edge of graphene is examined by aberration-corrected scanning transmission electron microscopy (STEM) combined with electron energy loss spectroscopy (EELS). High-resolution 2D maps of the EELS combined with atomic resolution annular dark field STE...
| Main Authors: | , , , , |
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| Formato: | Journal article |
| Idioma: | English |
| Publicado em: |
American Chemical Society
2014
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| _version_ | 1826262735113945088 |
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| author | Warner, J Lin, Y He, K Koshino, M Suenaga, K |
| author_facet | Warner, J Lin, Y He, K Koshino, M Suenaga, K |
| author_sort | Warner, J |
| collection | OXFORD |
| description | The local atomic bonding of carbon atoms around the edge of graphene is examined by aberration-corrected scanning transmission electron microscopy (STEM) combined with electron energy loss spectroscopy (EELS). High-resolution 2D maps of the EELS combined with atomic resolution annular dark field STEM images enables correlations between the carbon K-edge EELS and the atomic structure. We show that energy states of graphene edges vary across individual atoms along the edge according to their specific C-C bonding, as well as perpendicular to the edge. Unique spectroscopic peaks from the EELS are assigned to specific C atoms, which enables unambiguous spectroscopic fingerprint identification for the atomic structure of graphene edges with unprecedented detail. |
| first_indexed | 2024-03-06T19:40:46Z |
| format | Journal article |
| id | oxford-uuid:209a37e5-1d23-4777-a176-d02fec186df1 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:40:46Z |
| publishDate | 2014 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:209a37e5-1d23-4777-a176-d02fec186df12022-03-26T11:28:25ZAtomic level spatial variations of energy states along graphene edgesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:209a37e5-1d23-4777-a176-d02fec186df1EnglishSymplectic Elements at OxfordAmerican Chemical Society2014Warner, JLin, YHe, KKoshino, MSuenaga, KThe local atomic bonding of carbon atoms around the edge of graphene is examined by aberration-corrected scanning transmission electron microscopy (STEM) combined with electron energy loss spectroscopy (EELS). High-resolution 2D maps of the EELS combined with atomic resolution annular dark field STEM images enables correlations between the carbon K-edge EELS and the atomic structure. We show that energy states of graphene edges vary across individual atoms along the edge according to their specific C-C bonding, as well as perpendicular to the edge. Unique spectroscopic peaks from the EELS are assigned to specific C atoms, which enables unambiguous spectroscopic fingerprint identification for the atomic structure of graphene edges with unprecedented detail. |
| spellingShingle | Warner, J Lin, Y He, K Koshino, M Suenaga, K Atomic level spatial variations of energy states along graphene edges |
| title | Atomic level spatial variations of energy states along graphene edges |
| title_full | Atomic level spatial variations of energy states along graphene edges |
| title_fullStr | Atomic level spatial variations of energy states along graphene edges |
| title_full_unstemmed | Atomic level spatial variations of energy states along graphene edges |
| title_short | Atomic level spatial variations of energy states along graphene edges |
| title_sort | atomic level spatial variations of energy states along graphene edges |
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