Figure 4.

SEM images of the resultant epitaxial gratings. (a) 500-nm period, 200-nm-wide grating; (b) 450-nm period, 200-nm-wide grating; (c) 400-nm period, 150-nm-wide grating; (d) 400-nm period, 250-nm-wide grating.

Wang et al. Nanoscale Research Letters 2011 6:117   doi:10.1186/1556-276X-6-117
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