Study On Carbon-based Films Growth With Carbonaceous Mesophase On Different Substrates By Pirolysis

Carbon films containing graphene and diamond-like films, has becomepopular new materials in carbon family due to their unique characteristics.The technology of preparing graphene and diamond-like films now ismature but complex and costly at the same time.My article research utilizes carbonaceous mesophase as the precursorto deposit carbon-based films. Carbonaceous mesophase here is a kind ofliquid crystal derived from natural materials such as wood shavings andstraws. We have used the bulk made of carbonaceous metaphase to getdiamond-like films, which proves that it could be used as a kind of goodprecursor.In this article I use the pyrolysis to the make graphene films anddiamond films, and results show that graphene membrane grow in thesurface of silicon carbide, and diamond-like films grow on stainless steelsurface.So study about the induction mechanism of different substrates oncarbonaceous mesophase is carried out.In addition, the project also studied the influence of differentparameters and how carbon-based films transform under these conditionssuch as temperature, the different content of carbonaceous mesophaseprecursor, the different deposition times. The condition of preparinggraphene and diamond-like films and the energy they need are different.Usually graphite and diamond can mutually transform in given condition. We know graphite is bulk structure with Van der Wals power existed inadjacent layers. Graphene single layer actually is wrinkled membranewhich Van der Wals hardly exists. So it is possible for graphene totransform into diamond-like films. The research would verify thisassumption according to the results of experiments.The issue presents the preparation process and condition of grapheneand diamond-like films with pyrolysis for practice use and puts forwardmesophase induced self-assembly effect on different substrates fromtheoretical study.