4.8 Article

Graphene Nanoribbons Obtained by Electrically Unwrapping Carbon Nanotubes

Journal

ACS NANO
Volume 4, Issue 3, Pages 1362-1366

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/nn901782g

Keywords

graphene nanoribbon; carbon nanotube; in situ TEM

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We describe a clean method of graphene nanoribbon (GNR) extraction from multiwall carbon nanotubes (MWNTs), performed in a high vacuum, nonchemical environment. Electrical current and nanomanipulation are used to unwrap a portion of the MWNT and thus produce a GNR of desired width and length. The unwrapping method allows GNRs to be concurrently characterized structurally via high-resolution transmission electron microscopy (TEM) and evaluated for electrical transport, including situations for which the GNR is severely mechanically flexed. High quality GNRs have exceptional current-carrying capacity, comparable to the exfoliated graphene.

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