Separable metamaterials: analytical ab-initio homogenization and chirality. (14th October 2016)

• Record Type: Journal Article
• Authors: Ciattoni, Alessandro; Rago, Domenico; Rizza, Carlo
• Is Part Of: Journal of optics. Volume 18:Number 11(2016:Nov.)
• Publication Date: 2016-10-14
• Subjects: homogenization -- chirality -- bianisotropy; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/18/11/115103
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We investigate the ab-initio homogenization of separable metamaterials with factorized dielectric permittivity profiles, which can be achieved through suitable grey-scale permittivity design techniques. Separability allows such metamaterials to be physically regarded as the superposition of three fictitious 1D generating media. We prove that, in the long-wavelength limit, separable metamaterials admit a simple and analytical description of their electromagnetic bi-anisotropic response, which can be reconstructed from the properties of the 1D generating media. Our approach provides a strategy that allows the full ab-initio and flexible design of a complex bianisotropic response by using the simple and well-known properties of 1D metamaterials.