Figure 1

SEM image of LBZA NSs on Si and typical EDS spectra. (a) SEM image of LBZA NSs on Si, showing the sheet like morphology of most of the growth as well as a hexagonal crystal (black arrow). The image was acquired at 1 kV without metal coating. The crosses labeled I and II refer to locations similar to where the EDS spectra of (b) were acquired. (b) Typical EDS spectra corresponding to the locations shown in (a). The EDS spectra were acquired at 3 kV to minimize charging and excitation volume.