The nanoclusters
FESEM images of (a) the original eggshell membrane; (b) as-prepared PbS/eggshell membrane nanocomposites showing the overview; (c), (d), (e) showing higher magnifications of image (b), and TEM image of (f) the sample PbS/eggshell membrane treated ultrasonically in ethanol for 6 h, inset in (f) giving the SEAD pattern of PbS nanocrystallites. Credit: Smart Materials and Structures