Graphene-based hyperbolic metamaterial

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August undefined, 2024

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 … 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 …

Tunable terahertz structure based on graphene hyperbolic …

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. 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 … date of easter 1995

Tunable far-infrared hyperbolic metamaterial based on …

WebDec 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 ... WebApr 21, 2015 · We propose and theoretically explore terahertz amplification, based on stimulated generation of plasmons in graphene asymmetric hyperbolic metamaterials … 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 … bizbuysell volusia county

Graphene-based tunable hyperbolic microcavity Scientific Rep…

Realization of mid-infrared graphene hyperbolic metamaterials

WebFigure 1. Graphene-based multilayer HM topology, comprises graphene sheets as inductive surfaces stacked with dielectric spacers leading to hyperbolic dispersion at terahertz and … WebJun 27, 2014 · The numerical calculations for the effective permittivities of the graphene-based hyperbolic metamaterials, the theoretical absorption spectrum and the … date of easter 2025WebMar 25, 2013 · A graphene-based tunable hyperbolic metamaterials was designed for enhanced absorption in far-infrared frequencies 13. The tunable propagation properties … date of easter 1988

"WebOct 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. " - Graphene-based hyperbolic metamaterial

Graphene-based hyperbolic metamaterial

Perfect Narrowband Absorber Based on Patterned Graphene …

WebApr 21, 2015 · We propose and theoretically explore terahertz amplification, based on stimulated generation of plasmons in graphene asymmetric hyperbolic metamaterials (AHMM), strongly coupled to terahertz radiation. In contrast to the terahertz amplification in resonant nanocavities, AHMM provides a wide-band THz amplification without any … WebNov 27, 2024 · Some composite structures based on graphene and natural hyperbolic materials are proposed to regulate the spontaneous emission [ 52, 53 ]. In this paper, we study the spontaneous emission of a quantum emitter near a sandwich structure stacked by graphene, HMMs made from SiC nanowires, and graphene.

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WebMay 24, 2024 · Hexagonal boron nitride (hBN) exhibits natural hyperbolic dispersion in the infrared (IR) wavelength spectrum. In particular, the hybridization of its hyperbolic phonon polaritons (HPPs) and surface plasmon resonances (SPRs) induced by metallic nanostructures is expected to serve as a new platform for novel light manipulation. In this … 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 ...

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 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 …

WebGraphene based hyperbolic metamaterial for tunable mid-infrared biosensing Sarah Cynthia, a Rajib Ahmed, b Sharnali Islam, a Khaleda Ali a and Mainul Hossain *a Author affiliations Abstract Plasmonic biosensors, operating in the mid-infrared (mid-IR) region, are well-suited for highly specific and label-free optical biosensing. 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 …

WebJun 15, 2024 · HMMs are considered by employing multiple stacked photoexcited graphene sheets divided by dielectric spacers. Herein, we study and characterize the hyperbolic …

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 ... date of easter calculationWebJun 9, 2024 · Graphene-based hyperbolic metamaterials are well known for their optical anisotropy, high absorption of electromagnetic radiation, and low energy loss. We proposed a novel multilayer graphene-silica hyperbolic metamaterial designed as a grating structure providing narrowband near-perfect absorption of radiation in a mid-infrared band. The … bizbuysell vitality bowls franchiseWebOct 15, 2024 · Huihui Li, Weiming Hao, Xiang Yin, Shuqi Chen, Lin Chen, “Broadband generation of Airy beams with hyperbolic metamaterials,” Adv. Opt. Mater. 7, ... Zhancheng Li, and Jianguo Tian, “Dynamically tunable broadband mid-infrared cross polarization converter based on graphene metamaterial,” Appl. Phys. Lett. 103, 223102 (2013). bizbuysell washingtonWebJun 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 … date of easter by yearWebApr 1, 2024 · A tunable hyperbolic graphene-polar dielectric metamaterial is proposed. The proposed metamaterial is analyzed using transfer matrix method. The proposed … date of easter in 1974WebMar 2, 2024 · A tunable graphene-based hyperbolic metamaterial is designed and numerically investigated in the mid-infrared frequencies. Theoretical analysis proves … date of easter 1989WebJul 13, 2013 · Graphene-based hyperbolic metamaterial. Abstract: We introduce a graphene-based composite multilayer structure that exhibits hyperbolic-like … date of easter in 2018