Viability of focusing effect by left-handed stacked subwavelength hole arrays.
Physica B: Condensed Matter
In this work we present advances in the design of lenses based on left-handed extraordinary transmission metamaterials which provide high transmission and focusing despite the subwavelength size of their constituent apertures. Due to the effective negative index of refraction of the close-stack of subwavelength hole arrays, concave profiles are required for focusing instead of the convex geometries of dielectric lenses. An analysis of the foci produced by plano- and bi-concave lens is carried out.. © 2010 Elsevier B.V. All rights reserved.
|Title:||Viability of focusing effect by left-handed stacked subwavelength hole arrays|
|Keywords:||Extraordinary transmission, Left-handed medium, Metallic lens, Metamaterial|
|UCL classification:||UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
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