Graphene metasurface
WebAug 10, 2024 · Graphene-based metasurface nearly perfect absorbers (MPAs) can be used as an efficient tool for the active control and manipulation of waves in the terahertz (THz) gap. WebJan 7, 2024 · The resulting electron-optics-based components are large in size and operate at low temperatures to avoid violating the ballistic transport limits. In this paper, Dirac …
Graphene metasurface
Did you know?
WebJan 12, 2024 · Graphene-Based Metasurface for Tunable Absorption and Transmission Characteristics in the Near Mid-Infrared Region Abstract: This article reports a graphene-based metasurface to work at terahertz domain as a wideband tunable absorber along with a property of electromagnetic transmittivity. WebAug 23, 2024 · The TH power outflow of the proposed nonlinear graphene metasurface (black solid line) has the largest value in figure 5 compared to all the other scenarios: (a) the same dimensions as the graphene micro-ribbon metasurface on top of the same thickness dielectric layer but without gold substrate (purple dash-dotted line), (b) a uniform …
WebMar 23, 2024 · The metasurface is designed by placing graphene ribbons on a dielectric cavity resonator, where interplay between geometric plasmon resonances in the ribbons and Fabry-Perot resonances in the cavity is used to achieve a 2 π phase shift. As a proof of concept, we demonstrate that the wave front of the field reflected from a triangular bump ... WebApr 13, 2024 · A graphene metasurface placed over a glass substrate is presented. The proposed graphene metasurface can also be applied for the detection of Sodium Cyanide (NaCN), Potassium Cyanide (KCN), and Hydrogen Cyanide (HCN). The detection capacity of all three graphene metasurface sensor (GMSS) structures has been investigated and …
WebJan 25, 2024 · We propose a heat-reconfigurable metasurface composed of the silicon-based gold grating. The asymmetric Fano-like line shape is formed due to the mutual … WebApr 3, 2024 · In addition, graphene-based THz metasurface amplitude modulators are designed. When the depth of amplitude modulation is achieved by bias voltage modulation of the Fermi energy level of graphene, the maximum modulation amplitude is 23.42 dB, with a minimal modulation accuracy of 0.05 THz eV −1. In the article, the designed …
WebThe development of patterned graphene metasurface absorbers (PGMAs) brings solution avenues to achieve light weight, thin thickness, wide absorption bandwidth, and tunable …
Web1 day ago · Researchers report record-high magnetoresistance that appears in graphene under ambient conditions. Materials that strongly change their resistivity under magnetic … diabetic basics lotionWebresponds to anticlockwise rotation of the top active graphene metasurface. During the numerical calculation, the temperature of bot-tom passive layer T 1 is fixed at room … cindy lagroneWebAug 20, 2024 · A graphene-only metasurface device of the same design was fabricated and found to not possess observable resonant behavior up to 50 V applied voltage (see Supplementary Fig. 3 ). This was... diabetic basketball playerWebApr 13, 2024 · A graphene metasurface placed over a glass substrate is presented. The proposed graphene metasurface can also be applied for the detection of Sodium … diabetic banana nut muffins recipeWebNov 12, 2024 · Graphene metasurface is composed of large array of graphene cells, which results in collective plasmonic behaviour excited on the surface, realizing extraordinary electromagnetic properties. The … diabetic baskets christmasWebA graphene-based metasurface structure comprises periodical ϕ-shaped graphene on the top surface of a noble-metal-backed dielectric silicon dioxide (SiO2) that converts the incident linearly polarized wave into cross-polarized components with a peak polarization conversion ratio of more than 0.9 over a large band. cindy lafoon carwileWebGraphene-empowered dynamic metasurfaces and metadevices Article navigation > Opto-Electronic Advances > 2024 Vol. 5 > No. 4 > 200098 Citation: Zeng C, Lu H, Mao D, Du YQ, Hua H et al. Graphene-empowered dynamic metasurfaces and metadevices. Opto-Electron Adv 5, 200098 (2024). doi: 10.29026/oea.2024.200098 Review Open Access cindy lafond facebook