In this paper we present a short divulgative revision related to metallic nanostructres with diverse geometry, their optical response of localized surface plasmons resonance and some selected aplications. These metallic nanostructures with sizes in the range of 1-100 nm, showed an interesting localized surface plasmons resonance phenomenon which is presented for interacting with ligth. The most common nanostructures are Silver (Ag) and Gold (Au) spherical nanoparticles, which surface plasmons are very well know in the literature. Thus, the plasmonic property generates several aplications in nanocience and nanotechnology. Regarding the latter, in this work we cite the most representatives references in the topics such as: bacteria miti...