Negative refraction and subwavelength focusing using left-handed composite metamaterials
Proceedings - Photonic Crystal Materials and Devices - Integrated Optoelectronic Devices 2008
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We review experimental studies performed on left-handed metamaterials (LHM) at microwave frequencies. The metamaterial structure is composed of periodic arrays of split-ring resonators and wire meshes and exhibits a left-handed propagation band at frequencies of negative permittivity and negative permeability. Negative refraction is verified using prism shaped LHM and also by beam-shifting method. Subwavelength focusing of a point source is achieved with a resolution of 0.13λ, through a flat LHM superlens.
Negative refractive index
Left handed (LH)
Left-handed metamaterials (LHM)
Split ring resonator (SRR)
Published Version (Please cite this version)http://dx.doi.org/10.1117/12.777405
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