Figure 6
From: Carbon clusters on substrate surface for graphene growth- theoretical and experimental approach

The surface profiles of carbon films on (a) strontium titanate (SrTiO\(_{3}\)(001)), (b) sapphire (Al\(_{2}\)O\(_{3}\)(001)), (c) magnesium oxide (MgO(001)) and (d) silicon (Si(001)) substrates.