Anisotropic Etching and Nanoribbon Formation in Single-Layer Graphene
We demonstrate anisotropic etching of single-layer graphene by thermally activated nickel nanoparticles. Using this technique, we obtain sub-10-nm nanoribbons and other graphene nanostructures with edges aligned along a single crystallographic direction. We observe a new catalytic channeling behavio...
| Hoofdauteurs: | , , , , |
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| Formaat: | Artikel |
| Taal: | en_US |
| Gepubliceerd in: |
American Chemical Society
2010
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| Online toegang: | http://hdl.handle.net/1721.1/50791 https://orcid.org/0000-0003-0551-1208 https://orcid.org/0000-0001-9703-6525 https://orcid.org/0000-0002-9129-4731 https://orcid.org/0000-0001-8217-8213 |
| Samenvatting: | We demonstrate anisotropic etching of single-layer graphene by thermally activated nickel nanoparticles. Using this technique, we obtain sub-10-nm nanoribbons and other graphene nanostructures with edges aligned along a single crystallographic direction. We observe a new catalytic channeling behavior, whereby etched cuts do not intersect, resulting in continuously connected geometries. Raman spectroscopy and electronic measurements show that the quality of the graphene is resilient under the etching conditions, indicating that this method may serve as a powerful technique to produce graphene nanocircuits with well-defined crystallographic edges. |
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