Fig. 2
From: Aligned Chemically Etched Silver Nanowire Monolayer as Surface-Enhanced Raman Scattering Substrates
SEM images of self-assembled as-synthesized (a) and etched Ag nanowire film on the surface of silicon wafers using 200 μL (b), 300 μL (c), and 400 μL (d) 9:1 ammonia-to-hydrogen peroxide etchant solution