Figure 2.

Nucleation of self-assembled Au clusters and wiggling nanostructures. The variation of annealing temperature (Ta) done after 2.5-nm Au deposition on GaAs (111)A. The corresponding Ta is indicated with labels in the (a-d) AFM top-view images of 1 × 1 μm2. (a-1) to (d-1) are the cross-sectional surface line profiles acquired from the white lines in (a) to (d). (a-2) to (d-2) show the corresponding 2-D FFT power spectra.

Li et al. Nanoscale Research Letters 2014 9:113   doi:10.1186/1556-276X-9-113
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