Negative Refractive Index Ferromagnetic Materials with Negative Permeability at Zero Applied Magnetic Field

2009 ◽  
Vol 36 (1) ◽  
pp. 69-80 ◽  
Author(s):  
E. Demirel ◽  
M. Ozdemir ◽  
B. Aktas
Keyword(s):  
Magnetic Field ◽  
Refractive Index ◽  
Applied Magnetic Field ◽  
Negative Refractive Index ◽  
Ferromagnetic Materials ◽  
Negative Permeability

Metamaterials from Amorphous Ferromagnetic Microwires: Interaction between Microwires

2009 ◽  
Vol 152-153 ◽  
pp. 357-360 ◽  
Author(s):  
Andrei V. Ivanov ◽  
A.N. Shalygin ◽  
V.Yu. Galkin ◽  
A.V. Vedyayev ◽  
V.A. Ivanov
Keyword(s):  
Magnetic Field ◽  
Refractive Index ◽  
Optical Properties ◽  
External Magnetic Field ◽  
Electromagnetic Waves ◽  
Negative Refractive Index ◽  
Magnus Effect ◽  
Amorphous Ferromagnet ◽  
Wide Scale ◽  
Optical Magnus Effect

For inhomogeneous mediums the оptical Magnus effect has been derived. The metamaterials fabricated from amorphous ferromagnet Co-Fe-Cr-B-Si microwires are shown to exhibit a negative refractive index for electromagnetic waves over wide scale of GHz frequencies. Optical properties and optical Magnus effect of such metamaterials are tunable by an external magnetic field.

Analysis of properties of metamaterial-based composite system

2019 ◽  
Vol 33 (15) ◽  
pp. 1950154 ◽  
Author(s):  
N. Abirami ◽  
K. S. Joseph Wilson
Keyword(s):  
Magnetic Field ◽  
Refractive Index ◽  
Resonance Frequency ◽  
Applied Magnetic Field ◽  
Effective Refractive Index ◽  
Composite System ◽  
The Real ◽  
Left Handed

Magneto tunable left-handed material (LHM) which acts as a composite system has been theoretically demonstrated. The variation of the real and imaginary parts of the effective refractive index of the system is studied. The resonance that occurs in these studies are analyzed. The variation of impedance, reflectivity, absorptivity with frequency of the composite system was observed. The changes in resonance frequency with applied magnetic field are investigated. It is found that the resonance frequency increases with applied magnetic field.

scholarly journals METAMATERIALS AND TRANSFORMATION OPTICS

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Borivoje Milošević ◽  
Slobodan Obradović
Keyword(s):  
Magnetic Field ◽  
Refractive Index ◽  
Optical Materials ◽  
Negative Refractive Index ◽  
Scientific Field ◽  
Transformation Optics ◽  
Electric And Magnetic Field ◽  
Exciting Potential ◽  
New Type ◽  
Sub Wavelength

The paper discusses one of the most popular fields in the optical research of materials that has undergone a remarkable transformation. The study of metamaterials gives birth to a whole new scientific field called „transformation optics“ which promises to greatly increase the potential of manufacturing of synthetic nano-optical materials whose structure is located within the sub-wavelengths. Interactions of electric and magnetic field waves with modules of sub-wavelength produce effects that are impossible to get in natural materials, such as negative refractive index, unlimited degree of inertia and so on. Their development has offered an exciting potential to design a completely new type of optical materials.

Dual-band tunable negative refractive index metamaterial with F-Shape structure

Open Physics ◽  
2014 ◽  
Vol 12 (8) ◽  
Author(s):  
Muhammad Rizwan ◽  
Hai-Bo Jin ◽  
Fida Rehman ◽  
Zhi-Ling Hou ◽  
Jing-Bo Li ◽  
...  
Keyword(s):  
Refractive Index ◽  
Negative Refractive Index ◽  
Broad Band ◽  
Dual Band ◽  
Electromagnetic Simulation ◽  
Negative Permeability ◽  
Effective Media ◽  
Shape Structure ◽  
Potential Applications ◽  
Tunable Metamaterial

AbstractThis paper presents a negative refractive index tunable metamaterial based on F-Shape structure which is capable of achieving dual-band negative permeability and permittivity, thus dual-band negative refractive index. An electromagnetic simulation was performed and effective media parameters were retrieved. Numerical investigations show clear existence of two frequency bands in which permeability and permittivity both are negative. The two negative refractive index bandwidths are from 23.8 GHz to 24.1 GHz and from 28.3 GHz to 34.9 GHz, respectively. The geometry of the structure is simple so it can easily be fabricated. The proposed structure can be used in multiband and broad band devices, as the band range in second negative refractive index region is 7 GHz, for potential applications instead of using complex geometric structures and easily tuned by varying the separation between the horizontal wires.

MULTI-PLASMON RESONANCES SUPPORTING THE NEGATIVE REFRACTIVE INDEX IN "SINGLE-ATOM" METAMATERIALS

2012 ◽  
Vol 21 (02) ◽  
pp. 1250019
Author(s):  
D. T. VIET ◽  
N. T. TUNG ◽  
N. T. HIEN ◽  
Y. P. LEE ◽  
B. S. TUNG ◽  
...  
Keyword(s):  
Refractive Index ◽  
Negative Refractive Index ◽  
Effective Medium ◽  
Single Atom ◽  
Negative Permeability ◽  
Dispersion Diagram ◽  
Plasmon Resonances

The search for a simple meta-system with negative refractive index has attracted a lot of attention recently. In this paper, we study a negative refractive transmission operating at 300 GHz by using "single-atom" metamaterials which were initially designed for achieving negative permeability. The nature of the negativity is discussed extensively by the effective medium analysis and confirmed by the dispersion diagram.

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