FESEM morphology and TEM images of N2-UNCD nanorods. (a) FESEM morphology of the N2-UNCD nanorods, which are fabricated from N2-UNCD films grown using N2 (94%)/CH4 (6%) plasma at 700°C, using RIE etching process with nanodiamond particles as masking materials. (b) High resolution TEM image of N2-UNCD nanorod with the upper-right inset showing the low magnification TEM image of N2-UNCD nanorod and the corresponding SAED pattern. The insets 1 and 2 show the Fourier-transformed diffractogram (FT images) of the areas marked as 1 and 2, indicating that the UNCD nanorods are encased in a thin shell of graphite content of around 2 to 3 nm thickness. d, diamond; g, graphite.
Sankaran et al. Nanoscale Research Letters 2012 7:522 doi:10.1186/1556-276X-7-522