Atomically Thin Surface Cloak Using Graphene Monolayers

Chen, Pai Yen; Alù, Andrea

doi:10.1021/nn201622e

Cited by 626 publications

(399 citation statements)

References 44 publications

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“…[2][3][4][5] Hence, one can tailor the local conductivity by a bias voltage, and it might provide exciting venues to achieve wave-guiding in simple graphene flakes without additional nanostructures, which have been suggested to perform transformation optics and cloaking on a one-atom-thick surface. 6,7 Engineering plasmonic nanostructures in graphene, such as disks and ribbons, enables rich functionalities to be obtained, such as modulating the emitter radiation, 8 enhancing the light matter interaction, and realizing plasmon wave-guiding. 9,10 These kinds of structures have also been demonstrated theoretically to achieve a very high optical absorption.…”

Section: Introductionmentioning

confidence: 99%

Edge magnetoplasmons and the optical excitations in graphene disks

Apell

Kinaret

2012

Phys. Rev. B

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We discuss the edge magnetoplasmon properties in highly doped graphene disks, and the corresponding optical excitations. Edge magnetoplasmons with nonzero angular momentum (l = 0) have two branches corresponding to different edge current rotations with respect to the magnetic field. The resonance energies of one branch are blueshifted and the other redshifted relative to energies at B = 0, with the energy differences linearly proportional to the magnetic field. Recently, the l = 1 dipole mode has been investigated by two experiments using optical transmission spectroscopy [Crassee et al., Nano Lett. 12, 2470 Yan et al., ibid. 12, 3766 (2012)], and classical cyclotron resonances were found in highly doped graphene samples. These are determined by graphene magneto-optical conductivities, which behave like a conventional two-dimensional electron system in the high doping limit.

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Section: Introductionmentioning

confidence: 99%

Edge magnetoplasmons and the optical excitations in graphene disks

Apell

Kinaret

2012

Phys. Rev. B

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“…Here, e is the charge of an electron, k B the Boltzmann constant, T the temperature in K, and µ c the chemical potential which we assume to take the values between 0.1-0.5 eV [33]. These expressions show that the interband contribution plays the leading role around the absorption threshold, ω ≈ 2µ, while the intraband contribution is important at relatively low frequencies, ω < 2µ.…”

Section: Theoretical Modelmentioning

confidence: 99%

Tunable Metamaterials Made of Graphene-Liquid Crystal Multilayers

Madani¹,

Zhong²,

Tajalli³

et al. 2013

PIER

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Abstract-The dispersion properties of an anisotropic metamaterial composed of periodic stacking of graphene-liquid crystal layers are investigated in the far-infrared region. It is represented that this structure is able to show both the elliptic and hyperbolic dispersions using the tunable properties of the graphene and liquid crystal. The switching between two dispersion phases via control of the temperature, voltage and external electric field is studied. It is shown that this switching can be used to control of the transmission and reflection at the interface of the metamaterial and air.

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“…A new fresh impetus to the progress in this field has been given by the concept of metamaterials 1 , allowing to design a cloaking structure that surrounds an object making it invisible to an outside observer. Different approaches to achieve invisibility cloaking have been proposed including multilayered shells that may make even plasmonic particle invisible 2 being also tuned by graphene 3 or nonlinear layers imbedded into multi-shell structures 4 , or magneto-optical shell activated by an external magnetic field 5 . It was recognized that the invisibility cloaking become possible as a product of the powerful concepts of the so-called transformation optics [6][7][8][9] , and it was studied for a variety of applications including radar detection, sensors and detectors [10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Switchable invisibility of dielectric resonators

et al. 2017

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The study of invisibility of an infinite dielectric rod with high refractive index is based on the two-dimensional Mie scattering problem, and it suggests strong suppression of scattering due to the Fano interference between spectrally broad nonresonant waves and narrow Mie-resonant modes. However, when the dielectric rod has a finite extension, it becomes a resonator supporting the Fabry-Perot modes which introduce additional scattering and eventually destroy the invisibility. Here we reveal that for shorter rods with modest values of the aspect ratio r/L (where r and L are the radius and length of the rod, respectively), the lowest spectral window of the scattering suppression recovers completely, so that even a finite-size resonator may become invisible. We present a direct experimental verification of the concept of switchable invisibility at microwaves using a cylindrical finite-size resonator with high refractive index.

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Atomically Thin Surface Cloak Using Graphene Monolayers

Cited by 626 publications

References 44 publications

Edge magnetoplasmons and the optical excitations in graphene disks

Edge magnetoplasmons and the optical excitations in graphene disks

Tunable Metamaterials Made of Graphene-Liquid Crystal Multilayers

Switchable invisibility of dielectric resonators

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