Extremely subwavelength planar magnetic metamaterials


Journal Article

We present highly subwavelength magnetic metamaterials designed for operation at radio frequencies (rf's). A dual-layer design consisting of independent planar spiral elements enables the experimental demonstration of a unit cell size (a) that is ∼700 times smaller than the resonant wavelength (λ 0). Simulations indicate that utilization of a conductive via to connect spiral layers permits further optimization and we achieve a unit cell that is λ 0/a∼2000. Magnetic metamaterials are characterized by a time domain method which permits determination of the complex magnetic response. Numerical simulations are performed to support experimental data and we find excellent agreement. These designs make metamaterial low-frequency experimental investigations practical and suggest their use for the study of magnetoinductive waves, levitation, and to further enable potential rf applications. © 2012 American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Chen, WC; Bingham, CM; Mak, KM; Caira, NW; Padilla, WJ

Published Date

  • May 16, 2012

Published In

Volume / Issue

  • 85 / 20

Electronic International Standard Serial Number (EISSN)

  • 1550-235X

International Standard Serial Number (ISSN)

  • 1098-0121

Digital Object Identifier (DOI)

  • 10.1103/PhysRevB.85.201104

Citation Source

  • Scopus