Laser Induced Graphite Oxide/Graphene Transformation

In our experiments we aimed to structure the graphite oxide film by converting it locally into graphene by laser irradiation. An effect of ambient atmosphere on properties of the reduced graphene was also investigated. The reduction results were evaluated by measurements of electrical resistance and using Raman spectroscopy. The defect line at 1350 cm -1 remained still active in Raman spectra indicating disorder at edges of graphene sheets. A few-layer graphene can be locally formed in the film by direct laser writing, however stitching graphene flakes together remains as a problem that could be solved by incorporation of special organic molecules.