Fig. 9From: Simultaneous synthesis of nanodiamonds and graphene via plasma enhanced chemical vapor deposition (MW PE-CVD) on copperResults obtained from reduced substrate–plasma-interaction. The application of a higher process pressure (65 mbar instead of 50 mbar) leads to a compressed plasma ball and therefore reduces the plasma–substrate-interaction. Left Overview of surface of sample. The size of the nanodiamond spheres could be further diminished. Right A characteristic Raman spectrum reveals an improved film quality with respect to the defect densityBack to article page