Meta–surfaces or 2D metamaterials are generally considered in the far-field. Because of their resonant properties, they possess also an interesting band structure in the near-field. A meta–surface made of a set of parallel nano- wires deposited on a surface was studied. Bloch waves localized on the surface exist in the vicinity of the anti-resonances of the nano-wires. This band-structure leads to strong variations in the efficiencies of the meta- surface seen as a diffraction grating.

Date Published: 27 August 2014
PDF: 4 pages
Proc. SPIE 9172, Nanostructured Thin Films VII, 917203 (27 August 2014); doi: 10.1117/12.2060649

Published in SPIE Proceedings Vol. 9172:
Nanostructured Thin Films VII
Akhlesh Lakhtakia; Tom G. Mackay; Motofumi Suzuki, Editor(s)