Modular Analysis of Arbitrary Dipolar Scatterers

Viktar Asadchy*, Sergei Tretiakov

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)
312 Downloads (Pure)

Abstract

Within the paradigm of metamaterials and metasurfaces, the electromagnetic properties of composite materials can be engineered by shaping or modulating their constituents, the so-called meta-atoms. Synthesis and analysis of complex-shaped meta-atoms with general polarization properties is a challenging task. In this paper, we demonstrate that the most general dipolar response of any small object can be conceptually decomposed into a set of basic fundamental polarization phenomena, which enables immediate all-direction characterization of the electromagnetic properties of arbitrary linear materials and metamaterials. The proposed platform for modular characterization is tested on several examples of bianisotropic and nonreciprocal meta-atoms. As a demonstration of the potential of this modular analysis, we use it to design a single-layer metasurface of vanishing thickness with unitary circular dichroism. The analysis approach developed in this paper is supported by a ready-to-use computational code and can be further extended to meta-atoms engineered for other types of wave interactions, such as in acoustics and mechanics.

Original languageEnglish
Article number024059
Number of pages9
JournalPhysical Review Applied
Volume12
Issue number2
DOIs
Publication statusPublished - 28 Aug 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • SPLIT-RING RESONATORS
  • METAMATERIALS
  • OPTICS

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