Figure 2.

Filled-state STM image taken after deposition of 0.1 ML Ni onto Ag/Ge(111)-√3 × √3 surface at RT. The image size is 80 × 80 nm2, and the bias voltage is -1.6 V. Inset: small-scale (24 × 22 nm2) image showing that clusters are randomly distributed on the surface.

Fu et al. Nanoscale Research Letters 2013 8:416   doi:10.1186/1556-276X-8-416
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