Highly Subwavelength, Superdirective Cylindrical Nanoantenna

Samel Arslanagić and Richard W. Ziolkowski
Phys. Rev. Lett. 120, 237401 – Published 6 June 2018; Erratum Phys. Rev. Lett. 121, 249901 (2018)
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Abstract

A superdirective cylindrical nanoantenna is demonstrated with a multilayered cylindrical metamaterial-inspired structure. Targeting specific scattering coefficients for the dipole and higher-order modes, the ideal limit of needle radiation is demonstrated. A five-layer system is optimized to demonstrate its approach to the theoretical directivity bound. While the resulting structure is scalable to any frequency regime, its highly subwavelength overall size (λ0/10) takes advantage of combinations of positive and negative permittivity materials in the optical regime.

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  • Received 11 January 2018

DOI:https://doi.org/10.1103/PhysRevLett.120.237401

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsAtomic, Molecular & Optical

Erratum

Erratum: Highly Subwavelength, Superdirective Cylindrical Nanoantenna [Phys. Rev. Lett. 120, 237401 (2018)]

Samel Arslanagić and Richard W. Ziolkowski
Phys. Rev. Lett. 121, 249901 (2018)

Authors & Affiliations

Samel Arslanagić1 and Richard W. Ziolkowski2,3

  • 1Technical University of Denmark, Lyngby DK-2800, Denmark
  • 2University of Technology Sydney, Ultimo, New South Wales 2007, Australia
  • 3The University of Arizona, Tucson, Arizona 85721, USA

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Issue

Vol. 120, Iss. 23 — 8 June 2018

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