Figure 7.

Selective growth and functionalization at pointed apexes. (a) Schematic of the site-controlled InGaN QD in the GaN nanopyramid structure. Red islands indicate single InGaN QDs, while the green region is an InGaN quantum well. (b) Structure after silver deposition. The scale bars in the SEM images (insets) represent 500 nm. (c) Plasmonic nanofocusing self-aligned with the QD. (a–c) Adapted with permission from ref (74). Copyright 2015 National Academy of Sciences. (d) Different steps for selective attachment of single QDs on top of gold nanocones. Reproduced with permission from ref (77). Copyright 2015 The Royal Society of Chemistry.