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TEM images of the 1.4, 1.9 and 9.5 wt% SiO2-coated nanosilver as-prepared (a,b,c) and after their sintering or annealing for 4 hours at 500 °C (d,e,f). Please note the difference in magnification (d,e). Partially-coated nanosilver with SiO2 (a,b) grows substantially (d,e). In contrast, fully-coated nanosilver (c) hardly grows upon annealing (f) consistent with Figure 4.
