Figure 3

Morphology and structural studies of Au-NDs nanostructures.

(a) Bright field TEM image of Au-NDs nanoplatelets aggregates. (b) EDX spectral image probed on (Fig. 3a). (c) Bright field TEM image of single nanoplatelets. (d) EDP taken from (Fig. 3c) shows distinct and spotted diffraction rings corresponding to the ND cubic phase (white dot arcs) and diffraction spots belonging to the face-centered-cubic Au phase (yellow circles). (e) High resolution TEM image at the edge of an Au nanoplatelet and NDs labeled by white stars. Insets: left side, FFT pattern of Au crystallite of hexagonal shape; right side, simulated HRTEM image of fcc Au along <111> zone axis. (f) High resolution TEM image of (Fig. 3e) with different defocus conditions. Inset: simulated HR-TEM image of fcc Au along <111> zone axis.