Copper vs. iron: Microwave magnetism in the metamaterial age

Acher, O.

doi:10.1016/j.jmmm.2008.10.035

Cited by 20 publications

(18 citation statements)

References 47 publications

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“…Realizations of this principle at more elevated frequencies require the use of artificial magnetic materials (metamaterials and metasurfaces), which we consider next. In fact, even for applications in microwave absorbers artificial magnetics may have advantages over natural magnetics; see a review paper [101]. However, the bandwidth of absorbers [15] and material-filled small antennas [102] is determined by the static (zero frequency) value of the permeability.…”

Section: Thin Layer Of a Homogeneous Magnetic Materials On A Pec Planementioning

confidence: 99%

Thin Perfect Absorbers for Electromagnetic Waves: Theory, Design, and Realizations

2015

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With recent advances in nanophotonics and nanofabrication, considerable progress has been achieved in realizations of thin composite layers designed for full absorption of incident electromagnetic radiation, from microwaves to the visible. If the layer is structured at a subwavelength scale, thin perfect absorbers are usually called "metamaterial absorbers," because these composite structures are designed to emulate some material responses not reachable with any natural material. On the other hand, many thin absorbing composite layers were designed and used already in the time of the introduction of radar technology, predominantly as a means to reduce radar visibility of targets. In view of a wide variety of classical and new topologies of optically thin metamaterial absorbers and plurality of applications, there is a need for a general, conceptual overview of the fundamental mechanisms of full absorption of light or microwave radiation in thin layers. Here, we present such an overview in the form of a general theory of thin perfectly absorbing layers. Possible topologies of perfect metamaterial absorbers are classified based on their fundamental operational principles. For each of the identified classes, we provide design equations and give examples of particular realizations. The concluding section provides a summary and gives an outlook on future developments in this field.

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Section: Thin Layer Of a Homogeneous Magnetic Materials On A Pec Planementioning

confidence: 99%

Thin Perfect Absorbers for Electromagnetic Waves: Theory, Design, and Realizations

2015

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“…The negative permeability could be obtained via geometrical control of high frequency currents, e.g. in arrays of split ring resonators 5 , or alternatively one could rely on spin resonances in natural magnetic materials 6,7 , as was suggested by Veselago in Ref. 2.…”

Section: Introductionmentioning

confidence: 99%

“…The age of nanotechnology therefore sets an intriguing quest for additional benefits to be gained by structuring natural magnetic materials into so called magnonic metamaterials, in which the frequency and strength of resonances based on spin waves (magnons) 8 are determined by the geometry and magnetization configuration of meta-atoms. Spin waves can have frequencies of up to hundreds of GHz (in the exchange dominated regime) [6][7][8][9] and have already been shown to play an important role in the high frequency magnetic response of composites [10][11][12][13][14] . Moreover, in view of the rapid advances in the field of magnonics 9,15,16, , which in particular promises devices employing propagating spin waves, the appropriate design of magnonic metamaterials with properties defined with respect to propagating spin waves rather than electromagnetic waves acquires an independent and significant importance.…”

Section: Introductionmentioning

confidence: 99%

Magnonic Metamaterials

Kruglyak¹,

Dvornik²,

Mikhaylovskiy³

et al. 2012

Metamaterial

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“…The antisymmetric coupling mode between the top and down surface plasmon polaritons has very important potential application, such as plasmonic sensors and optical magnetic metamaterials. 18,19,[23][24][25] As the antisymmetric coupling mode between the top and the bottom surface plasmon (corresponding to transmission coefficient peak at short wavelength) can be excited efficiently in the monolayer metal rectangle nanohole arrays with the thickness of 120 nm, the optical properties for the exemplary system of bilayer silver rectangular nanohole arrays with the same thickness of 120 nm (the longer side and short side of the rectangular nanohole are 100 nm and 20 nm respectively; the periods of nanohole arrays with the square lattice are 150 nm.) are investigated and the results will be present as follows.…”

Section: Numerical Calculationsmentioning

confidence: 99%

Coupling effects in bilayer thick metal films perforated with rectangular nanohole arrays

Chen

2013

AIP Advances

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The coupling effects in bilayer thick metal (silver) films perforated with rectangular nanohole arrays are investigated using the finite-difference time-domain technique. Many interesting light phenomena are observed as the distance between the metal rectangular nanohole arrays varies. Coupling effects are found to play very important roles on the optical and electronic properties of bilayer metal rectangular nanohole arrays: antisymmetric coupling between surface plasmon polaritons near the top and bottom film plane, and antisymmetric coupling between localized surface plasmon resonances near the two long sides of the rectangular hole, are probably excited in each layer of bilayer metal rectangular nanohole arrays; antisymmetric and symmetric magnetic coupling probably occur between the metal rectangular nanohole arrays

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Copper vs. iron: Microwave magnetism in the metamaterial age

Cited by 20 publications

References 47 publications

Thin Perfect Absorbers for Electromagnetic Waves: Theory, Design, and Realizations

Thin Perfect Absorbers for Electromagnetic Waves: Theory, Design, and Realizations

Magnonic Metamaterials

Coupling effects in bilayer thick metal films perforated with rectangular nanohole arrays

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