Fig. 3From: Copper-Assisted Direct Growth of Vertical Graphene Nanosheets on Glass Substrates by Low-Temperature Plasma-Enhanced Chemical Vapour Deposition ProcessSEM images of growth time effect on VG. SEM images of the VG grown for 1 min (a), 4 min (b), 8 min (c) and 12 min (d). The inset image in (a) shows a scratch made by tweezers. e Cross-sectional SEM images of the VG grown on glass with growth times of 1, 4, 8 and 12 min, respectivelyBack to article page