Superbackscattering nanoparticle dimers

Publication Type:
Journal Article
Nanotechnology, 2015, 26 (27)
Issue Date:
Full metadata record
Files in This Item:
Filename Description Size
dug.pdfPublished Version1.35 MB
Adobe PDF
© 2015 IOP Publishing Ltd. 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 has been also addressed. Moreover, the numerical examples reveal that the dimers can attain close to a fourfold enhancement of the single nanoparticle response even in the presence of high losses.
Please use this identifier to cite or link to this item: