Fig. 2From: Copper-Assisted Direct Growth of Vertical Graphene Nanosheets on Glass Substrates by Low-Temperature Plasma-Enhanced Chemical Vapour Deposition ProcessSEM of VG on glass substrate without and with copper catalyst. SEM images of the VG grown on a glass substrate for 20 min without copper catalyst (a) and for 12 min with copper catalyst (b). The inset images are the cross-sectional SEM images of the samplesBack to article page