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Broadband Control of Topological Nodes in Electromagnetic Fields

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Abstract

We study topological nodes in electromagnetic wave interactions with structures. We show that, when the nodes exist, it is possible to bind certain nodes to a mirror plane in the structure. Such binding does not rely on any resonances in the structure, thus is effective over a wide wavelength range. As an implication of such broadband binding, we demonstrate that the topological nodes can be used for hiding of metallic objects over a broad wavelength range.

© 2018 The Author(s)

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