Perfect electromagnetic absorption using graphene and epsilon-near-zero metamaterials

Lobet, Michaël; Majérus, Bruno; Henrard, Luc; Lambin, Philippe

doi:10.1103/physrevb.93.235424

Cited by 36 publications

(21 citation statements)

References 44 publications

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“…Recently, we have demonstrated that free standing multilayered structures consisting of alternating graphene monolayers and submicron‐thin polymer (PMMA) slabs are capable to absorb up to 50% of the radiation, depending on the number of graphene sheets, thus providing an efficient microwave shielding. According to admittance‐matching conditions, in case of using a proper dielectric substrate being 1/4 of wavelength thick, or metamaterials‐like type, it is possible to reach almost perfect absorption. The concept of EM components relying on graphene high absorption ability in microwave‐THz frequency range has been proposed in our recent work: high performance of graphene in shields, filters, polarizers, operating at the GHz and THz frequencies has also been recently demonstrated …”

Section: Introductionmentioning

confidence: 99%

Stretching and Tunability of Graphene‐Based Passive Terahertz Components

Батраков

Volynets

Paddubskaya

et al. 2019

Physica Status Solidi (b)

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The dependence of transmission/absorption of terahertz (THz) radiation on strain in graphene is investigated experimentally and with the aid of ab initio calculations. By applying strain to chosen graphene layer(s), the effective sheet conductance can be fine‐tuned to necessary value to design tunable passive THz components (such as shields, filters, polarizers, etc.) utilizing the high absorption ability of graphene. The positive influence of non‐perfectness of chemically vapor deposited (CVD) graphene for strong tunability versus mechanical deformations is also discussed.

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Section: Introductionmentioning

confidence: 99%

Stretching and Tunability of Graphene‐Based Passive Terahertz Components

Батраков

Volynets

Paddubskaya

et al. 2019

Physica Status Solidi (b)

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“…three graphene layers separated by a dielectric spacer and an ENZ metamaterial45, although such a structure is considerably more complex than the one proposed in this work. Regarding material choice for the dielectric in Fig.…”

Section: Discussionmentioning

confidence: 99%

Dynamical tuning between nearly perfect reflection, absorption, and transmission of light via graphene/dielectric structures

Linder

Halterman

2016

Sci Rep

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Exerting well-defined control over the reflection (R), absorption (A), and transmission (T) of electromagnetic waves is a key objective in quantum optics. To this end, one often utilizes hybrid structures comprised of elements with different optical properties in order to achieve features such as high R or high A for incident light. A desirable goal would be the possibility to tune between all three regimes of nearly perfect reflection, absorption, and transmission within the same device, thus swapping between the cases R → 1, A → 1, and T → 1 dynamically. We here show that a dielectric interfaced with a graphene layer on each side allows for precisely this: by tuning only the Fermi level of graphene, all three regimes can be reached in the THz regime and below. Moreover, we show that the inclusion of cylindrical defects in the system offers a different type of control of the scattering of electromagnetic waves by means of the graphene layers.

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“…In free air (n 1 = n 2 = 1), one needsσ = 2, which can be obtained with 6 graphene planes that would absorb 50% of the incoming em power for all frequencies below 50 GHz. If the transmission medium could be a metamaterial with near-zero refractive index (n 2 ≈ 0), for instance an epsilon-near-zero medium, 3 graphene planes would absorb almost 100% [11].…”

Section: A Absorbing Layersmentioning

confidence: 99%

Electrodynamics of graphene heterostructures and electromagnetic applications

Lambin

Majérus

Lobet

et al. 2018

2018 International Conference on Electromagnetics in Advanced Applications (ICEAA)

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Heterostructures combining graphene layers, dielectric slabs and even metallic substrates are interesting systems to look at in view of their potential applications in microwaves and terahertz. A short review of their properties is presented, together with possible applications such as shielding layers, polarizers and plasmonic devices. In the near infrared and visible range, a graphene layer modifies the Brewster angle of the substrate that supports it. This effect leads to a non-destructive technique to count the number of atomic planes the graphene is made of.

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Perfect electromagnetic absorption using graphene and epsilon-near-zero metamaterials

Cited by 36 publications

References 44 publications

Stretching and Tunability of Graphene‐Based Passive Terahertz Components

Stretching and Tunability of Graphene‐Based Passive Terahertz Components

Dynamical tuning between nearly perfect reflection, absorption, and transmission of light via graphene/dielectric structures

Electrodynamics of graphene heterostructures and electromagnetic applications

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