. When the CV is swept cathodically it is observed that an under deposition of silver is initially observed at -0.2 V. By increasing the applied potential further, below -0.6 V, a rapid dendritic silver growth is observed. Dendrites continue to grow during the reverse (anodic) sweep until the applied potential is more positive than -0.6V. As the anodic sweep is swept more positive a sharp peak can be seen at a potential of ~0.1V. This sharp peak corresponds to the stripping of electrodeposited silver. Following CV characterization, SERS substrates were subsequently fabricated using an amperometric approach where a potential of -0.65 V applied to the working electrode for 10 s. A typical current vs time plot is presented in Figure (b). It can be seen that in this deposition process, the current does not plateau but instead keeps increasing exponentially as the potential is applied with time. This suggests that the overall deposition process is not diffusion limited since the growth continues laterally across the electrode surface.