C 2014 American Chemical Society

lasmonic nanostructures play an im-portant role in the development of applications in nanophotonics.1 These nanostructures have unique and interesting optical properties thanks to surface plas-mon resonances, which correspond to the collective oscillations of the conduction electrons.2 These resonances are associated with a strong scattering and absorption, as well as localization of light far below the diffraction limit.3,4 The coupling and hybri-dization between plasmon modes is a com-mon technique for tailoring and controlling their optical properties.5,6 The interaction between plasmon modes changes signifi