Figure 6.

One layer AFM 1 × 1 μm image of In0.4Ga0.6As QDs in samples grown under different conditions. Sample A (left) shows 1D chain-like ordering along the <a onClick="popup('','MathML',630,470);return false;" target="_blank" href="">View MathML</a> direction. Sample B (right) shows mostly isotropic or randomized dot distribution in the (001) plane.

Villegas-Lelovsky et al. Nanoscale Res Lett 2011 6:56   doi:10.1007/s11671-010-9786-8