Graphene-based hyperbolic metamaterial

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August undefined, 2024

WebMar 18, 2024 · Based on the optimized processing parameters, we fabricated a large-area graphene-based metamaterial absorber (25 × 50 mm 2, Fig. 3b) and tested its photothermal performance. The absolute ...

Goos–Hänchen effect on a graphene-based hyperbolic …

WebFeb 10, 2014 · A kind of tunable hyperbolic metamaterial (HMM) based on the graphene-dielectric layered structure at near-infrared frequencies is presented, and the engineered surface Bloch waves between graphene-based HMM and isotropic medium are investigated. Our calculations demonstrate that the frequency and f … WebSep 10, 2024 · The GH effect at the interface of a graphene-based hyperbolic metamaterial slab is investigated. A Gaussian beam with TM polarization in a total … east lansing press conference

Plasmonic Terahertz Amplification in Graphene-Based …

WebThis work introduces a parallel computing framework to characterize the propagation of electron waves in graphene-based nanostructures. The electron wave dynamics is modeled using both “microscopic” and effective medium formalisms and the numerical solution of the two-dimensional massless Dirac equation is determined using a Finite-Difference Time … WebApr 10, 2024 · Coupling of surface plasmon polaritons (SPPs) supported by graphene and hyperbolic phonon polaritons (HPPs) supported by hyperbolic materials (HMs) could effectively promote photo WebWe introduce graphene-based hyperbolic metamaterial for terahertz frequencies. The LDOS as well as the scattered power by a microsphere at its surface are enhanced by … cultural competency continuum chart and why

Polariton hybridization phenomena on near-field ... - ResearchGate

WebDec 22, 2014 · Here we theoretically propose and numerically analyze a graphene based tunable slow light device from the concept of controlling the group velocity of light in … WebThe proposed graphene-based harmonic sensor may potentially benefit a wide range of sensing applications, including, but not limited to, power-efficient, real-time monitoring of chemical/gas ... east lansing police department scannerWebOct 7, 2024 · We have theoretically shown that a complex resonator containing an asymmetric hyperbolic material based on a periodic nanostructure, including layers of inverted graphene and semiconductor, allows single-mode generation of THz radiation. east lansing prayer times

"WebA kind of tunable hyperbolic metamaterial (HMM) based on the graphene-dielectric layered structure at near-infrared frequencies is presented, and the engineered surface Bloch waves between graphene-based HMM and isotropic medium are investigated. Our calculations demonstrate that the frequency and frequency range of surface Bloch waves … " - Graphene-based hyperbolic metamaterial

Graphene-based hyperbolic metamaterial

WebApr 1, 2024 · In this work, we propose a tunable hyperbolic graphene-polar dielectric metamaterial in the far-infrared range. Here, we employ LiF as a strongly dispersive photonic material which can support surface plasmon polariton within its polaritonic gap. The proposed metamaterial has been analyzed using effective medium approximation … WebJul 13, 2013 · Graphene-based hyperbolic metamaterial Abstract: We introduce a graphene-based composite multilayer structure that exhibits hyperbolic-like wavevector dispersion at terahertz and mid-infrared frequencies. The multilayer structure comprises graphene sheets separated by dielectric layers.

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WebNov 28, 2013 · Graphene-based hyperbolic metamaterials exhibit a strong Purcell effect that could be used for boosting terahertz emission in semiconductor devices. Nature Photonics offers a unique mix of news and reviews alongside top-quality … WebMar 2, 2024 · A tunable graphene-based hyperbolic metamaterial is designed and numerically investigated in the mid-infrared frequencies. Theoretical analysis proves that by adjusting the chemical potential of graphene from 0.2 eV to 0.8 eV, the reflectance can be blue-shifted up to 2.3 µm. Furthermore, by modifying the number of graphene …

WebNov 29, 2024 · The structure under consideration (Fig. 1) consists of two building blocks: grating made of Si (\(\varepsilon = \varepsilon_{g} = 12.25\)) and a slab of graphene-dielectric metamaterial.The function of the first building block is creation of higher-order transmission channel(s). In such a case, the coupling of the incident waves differs for the … WebJun 7, 2024 · Photoexcited graphene can behave as the gain medium aiming to come up with the coherent radiation at low THz spectral region. However, its response is very …

WebJan 28, 2024 · graphene and hyperbolic metamaterial-based structure. IEEE Photonics. Journal, 11(4), pp.1-10. Citations (0) References (41) ResearchGate has not been able to resolve any citations for this ... WebRef. studied an NFTPV system consisting of a tungsten-nanowire-based hyperbolic metamaterial emitter and an In 0.2 Ga 0.8 Sb cell. By optimizing the filling ratio of Al 2 O 3, the maximum electric power peaked at 58.0 W/cm 2 thanks to the high temperature difference between the emitter and the receiver. Ref.

WebFeb 1, 2024 · The graphene plasmonic nano-ribbons are used and silicon slabs are improvised between the graphene to reduce its drawback by providing a hyperbolic metamaterial lens. Abstract Demand for an antenna with high gain and directivity for medical sensing is necessary so the Vivaldi antenna in the THz spectrum with …

WebOct 28, 2013 · We demonstrate that 100% light absorption can be achieved in a graphene-based hyperbolic metamaterial, consisting of periodically arranged graphene layers which are tilted with respect to the interface. The geometrical parameters of the multilayered structure and the chemical potential of graphene are chosen in such a way that the in … cultural competency checklistWebSep 1, 2024 · The combination of graphene and metallic metamaterials is the best means to attain active control of the electromagnetic wave. A C-shaped unit cell with a graphene … cultural competency course onlineWebFeb 5, 2024 · A tunable graphene-based hyperbolic metamaterial is designed and numerically investigated in the mid-infrared frequencies. Theoretical analysis proves that by adjusting the chemical potential of ... east lansing police miWebDec 22, 2014 · On the other hand, due to two dimensional nature and metallic characteristics of graphene in the frequency range where hexagonal Boron Nitride behaves as a type-I hyperbolic Metamaterial, we have ... east lansing mi to howell miWebFeb 4, 2016 · Graphene is a two-dimensional (2D) semi-metal with a thickness of only one atom 22, 23. It has been shown that doped graphene is a good infrared plasmonic material in terms of material loss 24.... cultural competency and humility trainingWebApr 21, 2015 · We propose and theoretically explore terahertz amplification, based on stimulated generation of plasmons in graphene asymmetric hyperbolic metamaterials … east lansing pizza houseWebMar 2, 2024 · A tunable graphene-based hyperbolic metamaterial is designed and numerically investigated in the mid-infrared frequencies. Theoretical analysis proves … cultural competency diversity training