Figure 1From: Growth Interruption Effect on the Fabrication of GaAs Concentric Multiple Rings by Droplet EpitaxyAFM 2 × 2 micron images of Sample A (a) and B (b). Insets show a 3D-magnified picture of a single structure. Cross sectional height profiles of a single Ga droplet and concentric triple quantum ring (c)Back to article page