Graphene metasurface
WebAug 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 … Web1 day ago · Researchers report record-high magnetoresistance that appears in graphene under ambient conditions. Materials that strongly change their resistivity under magnetic …
Graphene metasurface
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WebFeb 24, 2024 · A KAIST research team in collaboration with the University of Wisconsin-Madison theoretically developed a graphene-based active metasurface capable of … WebThe development of patterned graphene metasurface absorbers (PGMAs) brings solution avenues to achieve light weight, thin thickness, wide absorption bandwidth, and tunable terahertz (THz) absorption properties. In order to optimize the absorption properties of PGMA, the absorption spectrum is usually used as an important evaluation metric ...
WebIn this work, a double-layer graphene metasurface based absorber (GMSA) with tunable absorption window and intensity has been proposed for the THz regime. Utilizing the electrically tunable property of graphene, the two graphene layers play the roles of absorption window modulation layer and absorption intensity modulation layer … WebAug 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...
WebNov 16, 2015 · We use a one-port resonator model to explain the essential features of the proposed metasurface, and we show that graphene is a gate-tunable loss material that … 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 …
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 …
WebA 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. church collision centerWebDec 5, 2014 · We demonstrate efficient terahertz (THz) modulation by coupling graphene strongly with a broadband THz metasurface device. This THz metasurface, made of periodic gold slit arrays, shows near unity broadband transmission, which arises from coherent radiation of the enhanced local-field in the slits. church collision winston salem ncWebNov 3, 2024 · Owing to the outstanding physical properties of graphene, its biosensing applications implemented by the terahertz metasurface are widely concerned and studied. Here, we present a novel design of the graphene metasurface, which consists of an individual graphene ring and an H-shaped graphene structure. The graphene … church collision center winston salem ncWebMay 23, 2024 · The strong Smith–Purcell radiation on the graphene metasurface is due to the interaction between the electron bunch and periodic surface plasmon polaritons … church color for june 2022Webresponds 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 … church coloring pagesWebAug 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. de\u0027vine heavenly acres wikipediaWebMar 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 … church collection plate gif