Highly Subwavelength, Superdirective Cylindrical Nanoantenna

Publication Type:
Journal Article
Citation:
Physical Review Letters, 2018, 120 (23)
Issue Date:
2018-06-06
Metrics:
Full metadata record
Files in This Item:
Filename Description Size
Arslanagic_Ziolkowski_LN15412_2018_05_01.pdfAccepted Manuscript Version761.1 kB
Adobe PDF
© 2018 American Physical Society. 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.
Please use this identifier to cite or link to this item: