Fig. 2. SEM images of Ag nanostructures electrodeposited onto Si substrates at a current density of 2 mA cm⁻² for 12 min in two different electrolyte solutions containing 0.1 mM AgNO₃, 0.14 M HF, 0.1 mM PVP and 0.1 mM L-AA: (a) aqueous solution and (b) ethanol solution.