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Figure 2 | Nanoscale Research Letters

Figure 2

From: III-Nitride grating grown on freestanding HfO2 gratings

Figure 2

SEM images of a freestanding HfO 2 grating template. (a) SEM image of freestanding HfO2 grating template; (b) epitaxial III-nitride grating with air opening of 400 nm, and the inset is the zoom-in image; (c) epitaxial III-nitride grating with an air opening of 200 nm, and the inset is the zoom-in image; (d) epitaxial III-nitride grating with an air opening of 600 nm, and the inset is the zoom-in image; (e) 700-nm period epitaxial circular III-nitride grating; and (f) 500-nm period epitaxial circular III-nitride grating.

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