Fig. 2
From: Fabrication and Optical Properties of Strain-free Self-assembled Mesoscopic GaAs Structures
AFM 5 × 5 μm2 overview images of the GaAs deposition onto the 20-nm Al0.33Ga0.67As-filled hole used as a template. a–d AFM images of 1, 2, 5, and 10 nm of GaAs covered samples. We obtain elongated MGS aligned with the [1–10] direction. The insets in (a) and (d) show a magnification of the mesoscopic structure. e Morphological study (aspect ratio, area, and height) of the MGS evolution with increasing GaAs deposition. Lines are guides for the eye