\textbf{Formation of graphene flakes from oxidation of SiC nanoparticle}

We have performed the largest (112 million atoms) reactive molecular dynamics simulation using reactive force fields to study the oxidation of a SiC nanoparticle on the full Blue Gene/P machine. The SiC nanoparticle of diameter 100 nm is surrounded by O$_{\mathrm{2}}$ gas and heated to 2,800 K. Subsequently, we let the SiC nanoparticle oxidize at 2,800K. We observe formation of graphene-like flakes despite the harsh oxidation condition. We find the fractal dimension of the flakes is 1.85. We will discuss the implication of reaction kinetics on the structure and distribution of graphene flakes.