Figure 7.

AFM surface morphologies of ordered nanorings with 2 nm Si capping. (a) Post-annealing for 0.5 h at 610°C. (b) Post-annealing for 1 h at 610°C.

Ma et al. Nanoscale Research Letters 2011 6:205   doi:10.1186/1556-276X-6-205
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