International Symposium on Antennas and Propagation
Enhanced Interaction of Plasmonic Nanocylinders and Other Cylindrical Structures
Guangyuan Si, Haoyuan She, Jinghua Teng, Aaron Danner,
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Light scattering by two dimensional photonic crystal structures has been studied thoroughly using SMM (scattering matrix method) [1-2]. Periodic structures are also attracting attention [3-4]. With the development of nanoscience and nanotechnology, it becomes possible and important to investigate optical properties of nanoscaled objects. The enhancement of the near-field energy of a single plasmonic nanocylinder has been discussed in . In this paper, we now study the interaction of a dielectric nanocylinder with an array of plasmonic nanocylinders; significantly enhanced energy intensity is observed. The total cross-section can also be enhanced greatly. This phenomenon happens when the incident wave is a TE-polarized plane wave. In this case, Rayleigh scattering for small arguments of the lossless scatterers cannot be used because it will theoretically allow a nanocylinder to have an infinitely large cross section which is known as the divergence problem. For low damping cases, the exact solutions, i.e., Mie scattering theory should be applied to calculate the optical properties. Enhanced backscattering of a metallic nanocylinder with a random rough surface was studied using the method of stochastic functional approach .