Figure 1. Schematic illustration of Ge MF-on-NS hybrid assemblies.

(a) Synthesis of Ge MF-on-NS hybrids, involving selective etching and carbon-filling processes. The simplified illustration was drawn by J.-C. Kim and D.-W. Kim. (b) Ge MF-on-NS hybrid after etching the GeO_x sheath, giving the appearance of a dandelion. The digital photograph (left) and transmission electron microscopy image (right) were taken from G.-H. Lee.