Transformation optics and metamaterials

Chen, Huanyang; Chan, Che Ting; Sheng, Ping

doi:10.1038/nmat2743

Cited by 1,077 publications

(705 citation statements)

References 131 publications

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“…With the aid of the full range of available effective permittivity and permeability provided by metamaterials, people have been able to realize many exotic optical phenomena and devices, including invisible cloaks, illusion optics, optical black holes, beam shifters, field rotators, light concentrators, lossless waveguide bends and many more. 81,82 We first take the invisible cloak as an example to elaborate the basic concept of transformation optics, [83][84][85][86][87] as illustrated in Fig. 9(a).…”

Section: Transformation Opticsmentioning

confidence: 99%

“…Meanwhile, the form invariance of Maxwell's equations implies that the coordinate transformation can instead be applied to the permittivity and permeability, giving rise to the prescription of the spatial profile of the material property that enables us to achieve the desired light flow. [81][82][83][84]88 The resulting medium is normally highly anisotropic and spatially complex. The first proof-ofprinciple cloak is built by ten cylindrical layers of SRRs working over a band of microwave frequencies.…”

Section: Transformation Opticsmentioning

confidence: 99%

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Metamaterials: a new frontier of science and technology

Liu¹,

2011

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Metamaterials, artificial composite structures with exotic material properties, have emerged as a new frontier of science involving physics, material science, engineering and chemistry. This critical review focuses on the fundamentals, recent progresses and future directions in the research of electromagnetic metamaterials. An introduction to metamaterials followed by a detailed elaboration on how to design unprecedented electromagnetic properties of metamaterials is presented. A number of intriguing phenomena and applications associated with metamaterials are discussed, including negative refraction, sub-diffraction-limited imaging, strong optical activities in chiral metamaterials, interaction of meta-atoms and transformation optics. Finally, we offer an outlook on future directions of metamaterials research including but not limited to three-dimensional optical metamaterials, nonlinear metamaterials and ''quantum'' perspectives of metamaterials (142 references).

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Section: Transformation Opticsmentioning

confidence: 99%

Section: Transformation Opticsmentioning

confidence: 99%

Metamaterials: a new frontier of science and technology

Liu¹,

2011

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“…The investigations of optical negativeindex [1] metamaterials (NIM) using the nanostructured metaldielectric composites already have led to both fundamental and applied achievements that have been realized in various structures [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Spectrum of Cherenkov Radiation in Dispersive Metamaterials With Negative Refraction Index

Burlak¹

2012

PIER

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Abstract-We numerically studied the spectrum of Cherenkov optical radiation by a nonrelativistic anisotropic electron bunch crossing 3D dispersive metamaterial. A practically important case when such a medium is described by Drude model is investigated in details. In our theory only parameters of a metamaterial are fixed. The frequency spectrum of internal excitations is left to be defined as a result of the numerical simulation. It is found that a periodic field structure coupled to plasmonic excitations is arisen when the dispersive refractive index of a metamaterial becomes negative. In this case the reversed Cherenkov radiation is observed.

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“…There exist various cloaking mechanisms, among which is the transformation optics approach [1][2][3][4][5][6][7][8][9][10][11][12][13]. The fundamental idea is the invariance of Maxwell's equations under a space-deforming transformation if the material properties are altered accordingly.…”

Section: Introductionmentioning

confidence: 99%

Polarization-Invariant Directional Cloaking by Transformation Optics

Agarwal¹,

Chen²,

Li³

et al. 2011

PIER

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Abstract-We propose a three-dimensional directional cloak for arbitrarily polarized incoming electromagnetic waves, motivated by the fact that there will be negligible scattering when the direction of impinging wave coincides with the axial direction of a very thin and elongated perfectly electric conducting (PEC) scatterer. The performance of the cloak under different polarizations of incoming waves are numerically investigated. The case in which the direction of incoming wave is perturbed off the ideal direction is also quantitatively studied. Numerical simulations show that the directional cloaking device is able to tolerate a large range of tilted angles of incoming waves.

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Transformation optics and metamaterials

Cited by 1,077 publications

References 131 publications

Metamaterials: a new frontier of science and technology

Metamaterials: a new frontier of science and technology

Spectrum of Cherenkov Radiation in Dispersive Metamaterials With Negative Refraction Index

Polarization-Invariant Directional Cloaking by Transformation Optics

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