Figure 4
Top and side views of the first four members of w-structured NWires growing along the [0001] axis with a hexagonal cross section and six interfaces, odd series: (a) X32 (i = 1), (b) X84 (i = 2), (c) X160 (i = 3) and (d) X260 (i = 4). For atom colours, see Fig. 3. |