Graphene metasurface
WebMar 23, 2024 · Figure 1 shows the schematic of the graphene silica layered based broadband metasurface polarizer structure. Figure 1a and b show the three-dimensional view and top view of the polarizer structure. Figure 1c shows the side view and the graphene stack arrangement of the polarizer structure. The graphene sheet has been … WebApr 12, 2024 · Broadband Transmission-Coding Metasurface with Multi-Vortex-Beam. In article number 2200842, Si Jia Li and co-workers develop a new type of transmission-coding metasurface by changing the size of metal patches based on the principle of propagation phase and phase superposition, which digitally realize the vortex waves with wide-band, …
Graphene metasurface
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WebNov 1, 2024 · In this paper, we focus on the realization of metasurface carpet cloak with broadband, wide-angle and polarization-insensitive invisibility. For this purpose, an … WebFeb 20, 2024 · A KAIST research team in collaboration with the University of Wisconsin-Madison theoretically suggested a graphene-based active metasurface capable of independent amplitude and phase control of ...
WebNov 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 … Graphene was grown on a piece of copper foil (0.025 mm thick, 99.8%, Alfa Aesar) in a home-built LPCVD system44,45. The copper foil was first loaded in a quartz tube and annealed at 1000 °C for 1 h while maintaining the H2/Ar pressure at 1 Torr under a 200 sccm flow. Graphene was then grown for 30 min by … See more Figure 1a schematically illustrates the field-effect transistor (FET) structure for tuning graphene conductivity, which consists of a 150 nm-thick Au ground plane by e-beam … See more Each pixel of the 6 × 6 pixel array was independently connected to one of the 36 channels (output voltage, −4V ∼+8 V) of a DAC evaluation board (EVAL-AD5370, Analog Devices Inc.), which was then controlled by a … See more A simplified high-frequency circuit model of the device was developed, as shown in the inset to Fig. 2a, where CE (CG) represents the … See more
WebMar 8, 2024 · The combination of graphene and a metasurface holds great promise for dynamic manipulation of the electromagnetic wave from low terahertz to mid-infrared. The optical response of graphene is significantly enhanced by the highly-localized fields in the meta-atoms, and the characteristics of meta-atom … WebJan 12, 2024 · Graphene-Based Metasurface for Tunable Absorption and Transmission Characteristics in the Near Mid-Infrared Region. Abstract: This article reports a …
WebJun 13, 2024 · Hence, the EM response of the graphene metasurface can be electronically controlled. Design and Simulation of Meta-Atoms. The 3D schematic and profile of the …
WebJan 1, 2024 · Abstract. We study an independently tunable Fano resonance from quasibound state in the continuum and polarization-independent toroidal dipole resonance in hybrid graphene–dielectric metasurface consisting of a nanoring and a cross-shaped nanobar. The unique structural properties of the proposed metasurface can support … da breastwork\u0027sWebJan 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. dabridge22 twitterWebJan 25, 2024 · Graphene is a promising platform for configurable terahertz (THz) devices due to its reconfigurability, but most researches focus on its electrical tunability. Here, we … dab receivers amplifiersWebMay 5, 2024 · A graphene metasurface designed to give a 0 − 2π phase shift due to the interplay between plasmon and Fabry-Perot resonances can be employed for cloaking, … bing wallpaper of the day informationWebApr 1, 2024 · DOI: 10.1016/j.rinp.2024.106420 Corpus ID: 257947348; Multimode tunable terahertz absorber based on a quarter graphene disk structure @article{Ye2024MultimodeTT, title={Multimode tunable terahertz absorber based on a quarter graphene disk structure}, author={Zhibin Ye and Pinghui Wu and Hai-li Wang … bing wallpaper on windows 10WebJan 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 … bing wallpaper of the day infoWebSep 16, 2024 · Graphene is the name of a material formed using a two-dimensional honeycomb structure. It has emerged as one of the most important and practical metamaterials due to its exceptional electrical, thermal and optical features which makes it a good choice for next generation technology (Baringhaus et al. 2014; Mishra and Panwar … bing wallpaper photos