期刊
NANO LETTERS
卷 9, 期 1, 页码 457-461出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl8034509
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资金
- DFG through SFB 658
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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