Figure 2.

SEM pictures (3.5 μm × 3.5 μm) of QD chains on 60-nm partially relaxed GaInP and GaInAs layers. Figures ad correspond to samples A–D, respectively. The layer material and growth temperature of each sample are indicated in the figure

Hakkarainen et al. Nanoscale Research Letters 2010 5:1892-1896   doi:10.1007/s11671-010-9747-2