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Modular Analysis of Arbitrary Dipolar Scatterers
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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9
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Physical Review Applied, Volume 12, issue 2
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.
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Asadchy, V & Tretiakov, S 2019, 'Modular Analysis of Arbitrary Dipolar Scatterers', Physical Review Applied, vol. 12, no. 2, 024059. https://doi.org/10.1103/PhysRevApplied.12.024059