Considering that electrodeposition takes only 10 s (vide infra), the present approach is rapid, low cost, scalable (multiple electrodes can be coated at the same time) and environmentally friendly approach. Also, unlike silver nanoparticle synthesis using wet chemistry, the nanostructures do not require stabilizing agents and are pure silver, allowing easy postsynthesis functionalization via, e.g., thiol chemistry. This method also ensures that no residues, such as citric acid, would be incorporated into the metallic nanostructured surface which could potentially interfere with the recorded spectra.