Experimental study of subwavelength focusing by lefthanded metamaterials with a negative refractive index
Date
2007
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Source Title
Journal of Nanophotonics
Print ISSN
19342608
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Volume
1
Issue
1
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Language
English
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Abstract
Two dimensional (2D) left-handed metamaterials (LHM) exhibiting negative refraction and subwavelength imaging are studied experimentally. A left-handed transmission band is observed at the frequencies where both dielectric permittivity and magnetic permeability are simultaneously negative. 2D LHM structure is verified to have a negative refractive index by measuring the refraction through a prism-shaped sample. Subwavelength focusing is observed by using a flat LHM superlens.
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Keywords
Left-handed metamaterial , Negative refractive index , Superlens , Dielectric permittivities , Experimental studies , Left handed metamaterial , Negative refractions , Negative refractive index , Subwavelength focusing , Subwavelength imaging , Superlens , Superlenses , Transmission band , Light refraction , Magnetic permeability , Metamaterials , Refraction , Refractometers , Refractive index