Figure 3
Cross section of the zb-/diamond-structure NWires growing along the [001] axis with a square cross section and four {001} interfaces for run index i = 3 and (a) expansive morphing with index j = −3, and (b) reductive morphing with index j = 2. The latter morphing is not considered useful since a 90° rotation yields to expansive morphing at a lower run index i, thereby restricting j to negative integers (here: i = 1 and j = −2). Yellow atoms show the outer limit of the nominal cross section (i = 3 and j = 0) in part (a) and white atoms in part (b) present `ghost atoms' to fill up the nominal cross section. Interior atoms are grey, atoms with two interface bonds are blue and atoms with three interface bonds are green. |