Figure 4.

SEM morphologies of the grassy surfaces fabricated by self-masked etch. SEM morphologies of the grassy surfaces fabricated by the self-masked etch process of glass substrates with etch times of (A) 1, (B) 4, (C) 7, and (D) 10 min, respectively. Scale bar, 1 μm.

Song et al. Nanoscale Research Letters 2013 8:505   doi:10.1186/1556-276X-8-505
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