“…This fact is largely due to their advantage in manipulating light at the nanoscale by exploiting the interaction of light with metallic nanostructures, which exhibit interesting surface plasmon resonance (SPR) phenomena. 1,2 The plasmonic behaviors of metallic nanostructures have drawn enormous scientific interest due to their unique and unusual physicochemical properties and functionalities compared to their bulk counterparts. These properties make them attractive in various applications such as plasmonics, 3,4 nanoelectronics, 5,6 biotechnology 7,8 and nanophotonics.…”