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Since decades, scientists were interested in the fundamental mechanisms of light matter interaction. In 1999 Pendry et al. described a material system with dimensions shorter than the impinging wavelength which showed a negative index of refraction [I]. Because of the given opportunity of artificially designing the interaction response of these new structures, the research interest in this new field...
Most reported negative index of materials (NIMs) have combined conducting split ring resonators (SRRs) to realize the magnetic response and nonresonant wires to realize the electric response. But wire media has some disadvantages in common practice. Therefore, electric resonators were introduced by researchers to replace the wire media recently. Electric resonators are convenient to control and can...
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