Anisotropic Etching and Nanoribbon Formation in Single-Layer Graphene

摘要: We demonstrate anisotropic etching of single-layer graphene by thermally-activated nickel nanoparticles. Using this technique, we obtain sub-10nm nanoribbons and other nanostructures with edges aligned along a single crystallographic direction. observe new catalytic channeling behavior, whereby etched cuts do not intersect, resulting in continuously connected geometries. Raman spectroscopy electronic measurements show that the quality is resilient under conditions, indicating method may serve as powerful technique to produce nanocircuits well-defined edges.