Figure 2

SEM micrographs of the Aerographite-GaN 3D hybrid network.
(a–c) Growth of the GaN nano- and microcrystals on the Aerographite tabular network from partial to complete coverage. (d–f) Uniformity and morphology of the grown GaN nano- and microstructures on the AG tubes. (g) Illustrates the growth of GaN nano- and microcrystals on the both surfaces (inner and outer) of the Aerographite tubes. (h–i) Low and corresponding high magnification SEM images demonstrating the growth of hexagonally facetted GaN nanocrystals at the inner surface of the tube.