The evanescent waves in metallic strip gratings and complex structures in subwavelength regime

Date
2015-09-19
Authors
Iftimie, Nicoleta
Tascu, Sorin
Salaoru, Iulia
Steigmann, Rozina
Savin, Adriana
Irimia, Mihaela
Iacomi, F.
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Publisher
Elsevier
Peer reviewed
Yes
Abstract
The paper investigates the formation of evanescent waves in metallic strip gratings on the Ag/ZnO/SiO2/Si structure with silver strips when TEz incident wave in the radiofrequency range was used. The Ag/ZnO/SiO2/Si structure was fabricated by vacuum thermal evaporation technique and Scanning Electron Microscopy was used to evidence its high quality structure with parallel silver strips of same width and thickness. Simulation of the evanescent wave formation at the edge of Ag strips, with thicknesses in the range of micrometers, was performed, before performing the test in the subwavelength regime by the mean of a new transducer improved with metamaterials lens. The generation in slits, in air, of the electric evanescent mode, when metallic strip grating was excited with a TEz polarized wave at a frequency of 474 MHz, was successfully demonstrated.
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Citation
Iftimie, N. et al. (2015) The evanescent waves in metallic strip gratings and complex structures in subwavelength regime. Materials Today: Proceedings, 2 (6), pp. 3846-3852
Research Institute
Institute of Engineering Sciences (IES)