Negative permittivity and permeability in the infrared due to dielectric spheres

2005 ◽  
Author(s):  
Mark S. Wheeler ◽  
J. Stewart Aitchison ◽  
Mohammad Mojahedi
Keyword(s):  
Negative Permittivity ◽  
Permittivity And Permeability ◽  
Dielectric Spheres

Refractometric sensor based on slab waveguides of simultaneously negative permittivity and permeability materials

2020 ◽  
Vol 52 (12) ◽  
Author(s):  
Sofyan A. Taya ◽  
Nael Doghmosh ◽  
Zaher M. Nassar ◽  
Murugan Senthil Mani Rajan ◽  
Dhasarathan Vigneswaran
Keyword(s):  
Negative Permittivity ◽  
Slab Waveguides ◽  
Permittivity And Permeability

Comparing guided modal properties of surface waves along single- and double-negative indexed slab waveguides

2010 ◽  
Vol 18 (4) ◽  
Author(s):  
K. Kim ◽  
Y. Cho
Keyword(s):  
Surface Waves ◽  
Negative Permittivity ◽  
Double Negative ◽  
Dispersion Characteristics ◽  
Slab Waveguides ◽  
Normalized Frequency ◽  
Guided Mode ◽  
Permittivity And Permeability ◽  
Frequency Regime ◽  
Mode Characteristics

AbstractThe guided dispersion characteristics of the fundamental symmetric and asymmetric modes of surface waves along single- and double-negative indexed slab waveguides are investigated, and a comparative analysis made when varying the single- and double-negative permittivity and permeability. While the values of the permittivity and permeability of the slab region are varied to obtain a salient picture of the guided dispersion characteristics, identical absolute product values are used for both slab cases to facilitate a reasonable comparison. In particular, in common ranges where guided mode solutions coexist for both the single- and double-negative indexed slabs, the guided mode characteristics are similar with a lower normalized frequency regime, indicating that the sign of the material parameters has a negligible effect, whereas the characteristics become quite different as the normalized frequency increases. Some other anomalous guided dispersion properties are also discussed and compared with previously reported results.

Toward a constructive homogenization theory of composite metamaterials

2006 ◽  
Vol 919 ◽  
Author(s):  
Alexandru I Cabuz ◽  
Didier Felbacq
Keyword(s):  
Effective Medium ◽  
Negative Permittivity ◽  
Homogenization Theory ◽  
Holy Grail ◽  
Permittivity And Permeability ◽  
Effective Medium Approach

AbstractIn the homogenization of composite metamaterials the role played by the relative positions of the wires and resonators is not well understood, though essential. We present an effective medium approach which can systematically account for these effects. It involves independently homogenizing rows of wires and planes of resonators as slabs with negative permittivity and permeability respectively. The metamaterial is then treated as a 1D single negative anisotropic stack. Using this approach we show that it is in principle possible to satisfy the requirements of Pendry's superlens, [mu]=[epsilon]=-1 , up to losses. We propose a class of structure geometries which seems promising for achieving this holy grail of metamaterial science.

ELECTROMAGNETIC GUIDED WAVES IN A METAMATERIAL-MAGNETIC WAVEGUIDE STRUCTURE

2011 ◽  
Vol 25 (32) ◽  
pp. 4543-4551 ◽  
Author(s):  
H. M. MOUSA ◽  
M. M. SHABAT
Keyword(s):  
Guided Waves ◽  
Waveguide Structure ◽  
Negative Permittivity ◽  
Physical Parameters ◽  
Dispersion Characteristics ◽  
Permittivity And Permeability ◽  
Magnetic Waveguide ◽  
And Behavior

The growing and rapid interest in new artificial metamaterials, whose properties differ from the normal materials has motivated further investigations. The metamaterials have simultaneously negative permittivity and permeability. In this work, we have demonstrated theoretically the existence and behavior of the TE guided waves in a ferromagnetic/metamaterial/antiferromagnetic waveguide structure. The dispersion characteristics are performed for different kinds of metamaterials. The existence and the type of the solutions to the guided waves with respect to different physical parameters are also investigated and discussed. It has been shown that the metamaterials can lead to different, new unusual properties.

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