| Abstract: | This review article focuses on the basic physics of LSPR modes, and how they can be observed. For dipolar modes, observation is rather straightforward. However, higher order modes often require the use of more advanced experimental conditions or dedicated spectroscopic techniques such as electron energy‐loss spectroscopy (EELS). Eventually, bespoke LSPR modes can be engineered when different cavities are brought together to interact, giving rise to super‐ or sub‐radiant modes, as well as Fano resonances, which in the right conditions can evolve into plasmonic induced transparency. |
