Illustration of the fabrication process of self-assembled Au droplets on GaAs (111)A. AFM side-view images of (a) the bare GaAs (111)A and (b) the surface after the 2.5-nm Au deposition. (c) Nucleation of wiggly Au nanostructure after annealing at 350°C. (d) Self-assembled Au droplets after annealing at 550°C. AFM side-view images of (a) to (d) are 1 × 1 μm2. The cross-sectional surface line profiles in (a-1) to (d-1) are acquired from the black lines in (a) to (d).
Li et al. Nanoscale Research Letters 2014 9:113 doi:10.1186/1556-276X-9-113