Figure 1.

AFM images showing 2-μm scans of the topography of pristine and O7+-irradiated samples, with increasing fluence. (a) Pristine, (b) 1 × 1011 ions/cm2, (c) 1 × 1012 ions/cm2, and (d) 1 × 1013 ions/cm2.

Attri et al. Nanoscale Research Letters 2013 8:433   doi:10.1186/1556-276X-8-433
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