Metamaterial structure based on split ring resonators (SRR) is proposed in order to produce a negative refractive index. For this structure we have used a new approach, instead of applying light perpendicularly incident. We apply horizontally incident input waves. A model of SRR is used to ...
Metamaterials are artificially engineered structures that have properties, such as a negative refractive index1,2,3,4, not attainable with naturally occurring materials. Negative-index metamaterials (NIMs) were first demonstrated for microwave frequencies5,6, but it has been challenging to design NIMs ...
Negative refractive index can be realized originating from chiral configuration of this metamaterial. With precious tuning of rotated angle in each metallic foil pair and dielectric thickness h, different chirality parameters and negative refraction indices can be obtained. These results help to give a...
Metamaterials (MMs) refer to artificial structures or composite materials with extraordinary physical properties that can not be found in natural materials, such as electromagnetic/acoustic cloak [1–5], zero/negative Poisson's ratio [6–10], negative refractive index [11–15], etc. To realize ...
Metamaterials are artificially engineered structures that have properties, such as a negative refractive index, not attainable with naturally occurring materials. Negative-index metamaterials (NIMs) were first demonstrated for microwave frequencies, but it has been challenging to design NIMs f...
A generalized negative-refractive-index transmission-line (NRI-TL) metamaterial is proposed with two left-handed (backward) and two right-handed (forward) passbands. A condition for closing the corresponding two stopbands between these alternating left-handed and right-handed bands is derived. More...
The material exhibits a high electromagnetic activity and relatively low refractive index; the joined effect of both factors results into negative values for the refraction index for one of the two circular eigenmodes in a 0.4 GHz bandwidth above the resonance frequency....
Waxing and waning of lunar surface producing frequency based selective band width becoming negative refractive index medium with refractio9n and amplification as focal length becomes a curvature as f=R/1-n .This gives a clue that along the plane of hologram with solar rays interference the medium...
A uniplanar transmission-line (TL) network has been loaded with lumped elements (chip or printed), enabling one to achieve a two-dimensional (2D) uniplanar negative-refractive-index (NRI) metamaterial. The metamaterial consists of a 2D array of unit cells, composed of TL sections connected in ...
Leaky-wave antennas (LWAs) are designed based on supercells which are expanded versions of conventional negative-refractive-index transmission line (NRI-TL) unit cells. In the proposed LWAs with NRI-TL supercells, the number and values of inductors are reduced by half, decreasing the complexity...