Figure 13. SEM image of a single GaN nanowires placed between gold patterns on a sapphire substrate using a nanomanipulator. The inset shows a magnified image of the nanowires, where “A” denotes the larger diameter end of the nanowires and “B” denotes the smaller diameter end [95]

From

Review of GaN Nanostructured Based Devices

Ahmed M. Nahhas

American Journal of Nanomaterials. 2018, 6(1), 1-14 doi:10.12691/ajn-6-1-1