Figure 5

Morphological variations of Ag nanosheets. Top-view SEM images of Ag nanosheets grown in the electrolyte composed of 20 μM AgNO₃ and 1.32 mM NH₄OH for 120 min. Comparing the deposition condition (V_R = 15 V, V_O = 0.2 V, 100 Hz, and 3%) for the sample shown in Figure 1, the reduction potential (V_R) was varied as (a) −10 and (b) −20 V, and the oxidation potential (V_O) as (c) 0.05 and (d) 0.4 V, respectively. (The insets are magnified top-view SEM images.).