Near field imaging in microwave regime using double layer split-ring resonator based metamaterial
Date
2006
Authors
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Source Title
Opto-electronics Review
Print ISSN
1230-3402
Electronic ISSN
1896-3757
Publisher
Sciendo
Volume
14
Issue
3
Pages
213 - 216
Language
English
Type
Journal Title
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Volume Title
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Abstract
A planar metamaterial structure consisting of two layers of split-ring resonator (SRR) arrays is demonstrated to form the image of a point source with subwavelength resolution. The source frequency is swept through the resonance gap of the metamaterial layers and the lateral field intensity distribution is recorded on the transmission side of the metamaterial. When the source is tuned to the resonance frequency of SRRs, the metamaterial acts as a high permeability medium and a distinct image with subwavelength resolution in the lateral direction is obtained. Increasing the distance between the individual SRR layers reduces the interlayer coupling, and the intensity and spatial resolution of the image decrease rapidly.