Figure 4.
(a) STEM – HAADF micrograph of 2 nm Ag/17 nm GeOx/SiOx/Si(100) @800 C annealed in air, with selected directions indexed from this 2D projection. (b) Reconstructed 3D tomography view of one of the endotaxial islands, showing that the silver embedment is terminated by {111} facets and an (001) base. (c) Result of the Wulff construction, explaining this pyramidal shape and its orientation theoretically in terms of interface energy.