Figure 2.

a SEM image of the Au–Zn nucleation sites formed on the substrates at early stages of growth. b and c SEM-EDX done on point A and point B as marked in figure (a). d shows STEM elemental spectral analysis done on an individual nanowire.

Kar et al. Nanoscale Res Lett 2011 6:3   doi:10.1007/s11671-010-9738-3