Negative refraction and subwavelength focusing using left-handed composite metamaterials
Date
2008-01
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Source Title
Proceedings - Photonic Crystal Materials and Devices - Integrated Optoelectronic Devices 2008
Print ISSN
0277-786X
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SPIE
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Pages
1 - 7
Language
English
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Abstract
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.
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Keywords
Left-handed metamaterial , Metamaterials , Negative refractive index , Superlens , Magnetic permeability , Microwave frequencies , Permittivity , Refraction , Refractive index , Resonators , Computer networks , Light refraction , Materials science , Optics , Subwavelength focusing , Composite metamaterials , Left handed (LH) , Left-handed metamaterials (LHM) , Metamaterial structures , Metamaterials (MTM) , Negative permeability , Negative permittivity , Negative refractions , Periodic arrays , Point sources , Split ring resonator (SRR) , Subwavelength focussing , Super lens , Wire meshes , Composite materials , Electronic equipment