Nanolithography of single-layer graphene oxide films by atomic force microscopy

Atomic force microscopy-based nanolithography is used to generate the single-layer graphene oxide (GO) patterns on Si/SiO₂ substrates. In this process, a Si tip is used to scratch GO films, resulting in GO-free trenches. Using this method, various single-layer GO patterns such as gaps, ribbons, squares, triangles, and zigzags can be easily fabricated. By using the GO patterns as templates, the hybrid GO-Ag nanoparticle patterns were obtained. Our study provides a flexible, simple, convenient method for generating GO patterns on solid substrates, which could be useful for graphene material-based device applications.