Tunable multiband directional electromagnetic scattering from spoof Mie resonant structure

We demonstrate that directional electromagnetic scattering can be realized in an artificial Mie resonant structure that supports electric and magnetic dipole modes simultaneously. The directivity of the far-field radiation pattern can be switched by changing wavelength of the incident light as well...

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Bibliographic Details
Published in:Scientific reports 2018-06, Vol.8 (1), p.8817-8, Article 8817
Main Authors: Wu, Hong-Wei, Chen, Hua-Jun, Xu, Hua-Feng, Fan, Ren-Hao, Li, Yang
Format: Article
Language:English
Subjects:
639/624/399/1015
639/766/400/1103
Humanities and Social Sciences
Light
Light scattering
multidisciplinary
Nanoparticles
Science
Science (multidisciplinary)
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Summary:We demonstrate that directional electromagnetic scattering can be realized in an artificial Mie resonant structure that supports electric and magnetic dipole modes simultaneously. The directivity of the far-field radiation pattern can be switched by changing wavelength of the incident light as well as tailoring the geometric parameters of the structure. In addition, we further design a quasiperiodic spoof Mie resonant structure by alternately inserting two materials into the slits. The results show that multi-band directional light scattering is realized by exciting multiple electric and magnetic dipole modes with different frequencies in the quasiperiodic structure. The presented design concept is suitable for microwave to terahertz region and can be applied to various advanced optical devices, such as antenna, metamaterial and metasurface.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-27268-6