Paper in Optics Letters now online

After quite some time, our paper entitled “Nonlocal study of ultimate plasmon hybridization” is now available online on the Optics Letters website. In this work, we use our generalized nonlocal optical response (GNOR) model (previously described in this paper) to investigate a dimer consisting of two sodium cylinders in (sub)nanometer proximity. We calculate the extinction cross section and field enhancement, when the gap of the dimer is varied from separated via touching to overlapping dimers. The results show very good agreement with other models (such as density-functional theory) and, more importantly, with experimental observations. Using transformation optics, we consider the touching case in more detail and show that the resonance energies of macroscopic touching cylinders depends on the microscopic properties of the electron gas of the metal.