Figure 2

Crystal structure and chemical composition of the nanowires.
(a) Typical low-magnification TEM image of the α-Si3N4 nanowires, showing its structural uniformity. (b) The corresponding EDS spectrum recorded from the single nanowire. (c,e) High-magnification TEM images of single nanowires and (d,f) their corresponding fast Fourier transform (FFT) pattern.