Superbackscattering Nanoparticle Dimers
Optics
2015-02-03 v1
Abstract
The theory and design of superbackscattering nanoparticle dimers are presented. We analytically derive the optimal configurations and the upper bound of their backscattering cross-sections. In particular, it is demonstrated that electrically small nanoparticle dimers can enhance the backscattering by a factor of 6.25 with respect to single dipolar particles. We demonstrate that optimal designs approaching this theoretical limit can be found by using a simple circuit model. The study of practical implementations based on plasmonic and high-permittivity particles reveal that fourfold enhancement factors might be attainable even with realistic losses.
Cite
@article{arxiv.1502.00264,
title = {Superbackscattering Nanoparticle Dimers},
author = {Iñigo Liberal and Iñigo Ederra and Ramón Gonzalo and Richard. W. Ziolkoski},
journal= {arXiv preprint arXiv:1502.00264},
year = {2015}
}