Scribing Graphene Circuits

This chapter presents a panoramic view of the potential and physical characteristics of graphene oxide (GO) and rGO, from fabrication to physical and electrical properties. The versatility of this material is emphasized by the laser reduction method, which allows the patterning of conductive rGO surrounded by insulating GO. The chemical synthesis of GO from graphite has evolved into a viable technique of producing graphene sheets on a large scale. The exfoliation process consists of breaking the interlayer bonds existing in between the layers of GO, whether by sonication or mechanical stirring, or by chemical compounds with surfactant properties. Raman spectroscopy uses a monochromatic laser to interact with the molecular vibrational modes in a sample. The laser‐assisted selective photo‐thermal reduction of GO into rGO makes it possible to generate accurate conductive patterns isolated by the GO on virtually any stable insulating substrate.