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  • Title: Rapid trench channeling of graphenes with catalytic silver nanoparticles.
    Author: Severin N, Kirstein S, Sokolov IM, Rabe JP.
    Journal: Nano Lett; 2009 Jan; 9(1):457-61. PubMed ID: 19143507.
    Abstract:
    We demonstrate trench channeling of mono- and multilayer graphenes with silver nanoparticles with high speed in ambient environment and at elevated temperatures. A silver nanoparticle located at a graphene edge catalyzes oxidation of neighboring carbon atoms, thereby burning a trench into the graphene layer. High-resolution scanning tunneling microscopy imaging reveals that the trench edges are very smooth with a peak-to-peak roughness below 2 nm. We discuss the channeling mechanism and demonstrate that channeling speeds of up to 250 nm/s and the smoothness of the resulting trenches indicate the prospect of a "catalytic pen" for high-precision lithography on graphenes.
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