Fig. 2From: Quantitative Evaluation of the Dispersion of Graphene Sheets With and Without Functional Groups Using Molecular Dynamics SimulationsThe numbering of centroids of graphene sheets used to calculate the degree of dispersion in a nanofluid. The inset shows where the centroid occurs in the graphene sheets. If the separation between graphene sheets becomes smaller than 3.5 times the carbon–carbon Van der Waals separation, the graphene sheets are considered aggregatedBack to article page