Fig. 2

2 keV SEM images of the neat ASA (a) and the neat PC samples (b); 30 keV iSE images of the neat ASA (c) and neat PC (d) samples, obtained in the same regions as (a) and (b), respectively.

2 keV SEM images of the neat ASA (a) and the neat PC samples (b); 30 keV iSE images of the neat ASA (c) and neat PC (d) samples, obtained in the same regions as (a) and (b), respectively.