Figure 1
From: Fabrication of vertical GaN/InGaN heterostructure nanowires using Ni-Au bi-metal catalysts
SEM images of GaN nanowires grown by the vapor–liquid-solid mechanism. (a) SEM images of GaN nanowires grown by Ni catalysts. (b) SEM images of GaN nanowires grown by Au/Ni catalysts. (c) Cross-sectional SEM images of GaN nanowires grown by Ni catalysts. Inset of (c) shows the end of the nanowires. (d) Cross-sectional SEM images of GaN nanowires grown by Au/Ni catalysts. Inset of (d) shows the end of the nanowires. (e) Schematic illustration of the VLS process for GaN nanowire grown by Ni catalysts. (f) Schematic illustration of the VLS process for GaN nanowire grown by Au/Ni catalysts.