Browsing by Keywords "Negative refraction"
Now showing items 1-20 of 21
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Bilayer metamaterial: analysis of left-handed transmission and retrieval of effective medium parameters
(Institute of Physics Publishing Ltd., 2007)We report an experimental and numerical analysis of a planar metamaterial designed for normal-to-plane propagation, and operating at microwave frequencies. The metamaterial consists of cutwire and wire patterns, which are ... -
Development of left-handed composite materials and negative refracting photonic crystals with subwavelength focusing
(2005)We review the studies conducted in our group concerning electromagnetic properties of metamaterials and photonic crystals with negative effective index of refraction. In particular, we demonstate the true left handed ... -
EU NoE metamorphose: Metamaterials research activities
(2005)We will present the activities of METAMORPHOSE a network of excellence (NoE) formed under EU-FP6 on the area of metamaterials. The main scientific objective of the partners of this consortium is to develop new types of ... -
Experimental analysis of true left-handed behaviour and transmission properties of composite metamaterials
(Elsevier, 2005-12)We report the true left-handed transmission of a composite metamaterial (CMM) consisting of periodically stacked split-ring resonator (SRR) and wire elements. The negative permeability (μ < 0) gap is demonstrated explicitly ... -
Experimental demonstration of negative refraction and subwavelength imaging by left-handed composite metamaterials
(2006)We report a true left-handed (LH) behavior and focusing in a composite metamaterial consisting of periodically arranged split ring resonator (SRR) and wire structures. The magnetic resonance of the SRR structure is ... -
Experimental demonstration of sub-wavelength imaging by left handed metamaterials
(2007)We review the studies conducted in our group concerning electromagnetic properties of metamaterials and photonic crystals with negative effective index of refraction. In particular, we demonstate the true left handed ... -
Experimental demonstration of subwavelength focusing of electromagnetic waves by labyrinth-based two-dimensional metamaterials
(Optical Society of America, 2006-03-15)We studied focusing in a two-dimensional metamaterial that was based on a labyrinth structure. We theoretically showed that the labyrinth-based metamaterial exhibits negative indices of refraction between 6 and 6.4 GlIz. ... -
Highly directive radiation and negative refraction using photonic crystals
(Institute of Physics Publishing, 2005)In this article, we present an experimental and numerical study of certain optical properties of two-dimensional dielectric photonic crystals (PCs). By modifying the band structure of a two-dimensional photonic crystal ... -
Metamaterials with negative permeability and negative refractive index: Experiments and simulations
(Institute of Physics Publishing Ltd., 2007)We report the transmission characteristics of split-ring resonator and left-handed metamaterials (LHM) in the microwave frequency regime. A left-handed transmission band is observed at the frequencies where both dielectric ... -
Negative refraction and imaging beyond the diffraction limit by a two-dimensional left-handed metamaterial
(Elsevier BV, 2008)We report our experimental results on two-dimensional left-handed metamaterials (LHM) exhibiting negative refraction and subwavelength imaging. Transmission and reflection spectra of LHM are studied and a left-handed ... -
Negative refraction and subwavelength focusing in two-dimensional photonic crystals
(Springer-Verlag, 2007)We experimentally and theoretically demonstrate negative refraction and focusing on electromagnetic (EM) waves by using two-dimensional photonic crystal slabs at microwave frequencies. Negative refraction is observed both ... -
Negative refraction and subwavelength focusing using photonic crystals
(2005)We review certain novel optical properties of two-dimensional dielectric photonic crystals (PCs) which exhibit negative refraction behavior. We investigate two mechanisms which utilize the band structure of the PC and lead ... -
Observation of negative refraction and focusing in two-dimensional photonic crystals
(Institute of Physics Publishing Ltd., 2006)We experimentally and theoretically demonstrate the negative refraction and focusing of electromagnetic (EM) waves by twodimensional photonic crystal slabs at microwave frequencies. The negative refraction is observed both ... -
Observation of negative refraction and negative phase velocity in true left-handed metamaterials
(SPIE - International Society for Optical Engineering, 2005)We report a true left-handed (LH) behavior in a composite metamaterial consisting of periodically arranged split ring resonator (SRR) and wire structures. The magnetic resonance of the SRR structure is demonstrated by ... -
Observation of negative refraction and negative phase velocity in true left-handed metamaterials
(2007)We report a true left-handed (LH) behavior in a composite metamaterial consisting of periodically arranged split ring resonator (SRR) and wire structures. The magnetic resonance of the SRR structure is demonstrated by ... -
Physics and applications of photonic crystals
(Nanotechnology Research Center NANOTAM, 2004)In this article, we investigate how the photonic band gaps and the variety of band dispersions of photonic crystals can be utilized for various applications and how they further give rise to completely novel optical ... -
Physics and applications of photonic nanocrystals
(2004)Photonic nanocrystals are periodic dielectric or metallic structures having photonic bands in analogy to electronic bands of semiconductors. The presence of photonic band-gaps, where the propagation of photons of certain ... -
Physics and applications of photonic nanocrystals
(Inderscience Publishers, 2004)Photonic nanocrystals are periodic dielectric or metallic structures having photonic bands in analogy to electronic bands of semiconductors. The presence of photonic band-gaps, where the propagation of photons of certain ... -
A plain photonic crystal for generating directional radiation from embedded sources
(Institute of Physics Publishing Ltd., 2007)We investigate experimentally the generation of highly directional radiation from a plain two-dimensional photonic crystal structure where an embedded source couples to a photonic crystal band having Bloch modes of even ... -
Review of experimental studies on microwave left-handed metamaterials
(2007)We review experimental studies on left-handed metamaterials operating at microwave frequencies. Left-handed transmission is obtained from a composite metamaterial consisting of periodic split ring resonator and wire arrays. ...
