Figure 2
EDX spectra taken at the top, middle and bottom sections of (a) NW2 (air) and (b) NW4 (He). The color of each line profile is correlated with the color of the arrows in Fig. 1(f) for NW2 and in Fig. 3(f) for NW4. The horizontal pink lines correspond to the peak height for each element in a non-exposed NW. |