Which method of graphene production involves the deposition of reduced graphene oxide onto the substrate at ultrahigh speed?

Which method of graphene production involves the deposition of reduced graphene oxide onto the substrate at ultrahigh speed? Correct Answer Supersonic spray

The supersonic spray method uses a graphene spray gun to deposit one atom thick layer of graphene onto the substrate. The de Laval nozzle is inserted with reduced graphene oxide. These molecules are then converted into fine particles during its exposure to supersonic speed gas stream. These are further transformed into tiny droplets in the air. The graphene droplets evaporate and evenly disperse, while being suspended in air. Upon coming in contact with substrate, the energy of the impact rearranges the carbon atoms into flawless graphene.