Figure 3
TEM images and XANES spectrum. Plan-view TEM image of the diamond film grown by the microwave Ar-1%CH4-10%H2 plasma jet at (a) 100 and (b) 30 Torr. (c) Enlarged TEM image of (b); the inset shows the corresponding NBD pattern of a single diamond nanograin. (d) The XANES spectrum of the UNCD film grown from the LPLT (30 Torr/460°C) plasma jet technique.