Artificial Magnetism via Mie Resonances

Achieving artificial magnetism is a long-standing aim of metamaterials research. Generally, artificial magnetism is realized by considering the average response of complex structures, such as arrays of subwavelength particles or split-rings. However, these standard approaches break down at deeply su...

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Bibliographic Details
Main Authors: Contestabile, A., Castaldi, G., Galdi, V., Galante, A., Alecci, M., Burov, D., Rizza, C.
Format: Conference Proceeding
Language:English
Subjects:
Dispersion
Electromagnetics
Magnetic devices
Magnetic materials
Magnetic multilayers
Magnetic resonance
Metamaterials
Numerical models
Performance evaluation
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Summary:Achieving artificial magnetism is a long-standing aim of metamaterials research. Generally, artificial magnetism is realized by considering the average response of complex structures, such as arrays of subwavelength particles or split-rings. However, these standard approaches break down at deeply subwavelength scales. Here, we suggest a route for achieving artificial magnetism for near-field manipulations. We show that, at a Mie resonance, a highindex hollow sphere can support an outer near-field distribution accurately reproducing the one of a negative-permeability hollow sphere with the same size. Our results suggest a new strategy for developing magnetic devices for custom near-field manipulation.
ISSN:2573-2706
DOI:10.1109/Metamaterials62190.2024.10703292