Broadband metasurface
WebJun 1, 2015 · 779 wileyonlinelibrary.com C O M M U N IC A IO N In this article, we introduce a metasurface-based broadband fl at-lens array functioning in the terahertz regime. Being functional devices consisted of a number of regularly arranged lenslets, lens arrays not only possess superior focusing and imaging functionalities but also have many intriguing … WebMar 18, 2024 · Fig. 1: Metasurface design for signal multiplexing in space and frequency. a, The phases of a unit cell are controlled by an FPGA device and vary periodically. Two …
Broadband metasurface
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WebMar 29, 2024 · Notably, the proposed metasurface unit cell maintains a good circular-polarization efficiency in a broadband range of 6.82-9.96 GHz (fractional bandwidth of … WebConclusion. The current and pattern modeling result obtained from the finite array are qualitatively similar to the results reported in [1]. For other types of metasurface …
WebSep 18, 2024 · An important consideration when designing metasystems is the strong chromatic dispersion of metasurface elements. While chromatic dispersion can be a feature in certain instruments, in imaging systems, it leads to chromatic aberrations, hindering broadband operation. WebAug 4, 2014 · A broadband and broad-angle low-scattering metasurface is designed, fabricated and characterized. Based on the optimization algorithm and far-field scattering pattern analysis, we propose a rapid ...
WebSep 12, 2016 · In this article, we propose a novel scheme of a broadband metasurface hologram in which we simultaneously tailor the five-level amplitude and eight-level phase … WebElectromagnetic metasurfaces have been intensively used as ultra-compact and easy-to-integrate platforms for versatile wave manipulations from optical to terahertz (THz) and …
WebJan 8, 2024 · By precisely designing the parameters of each unit, a metasurface composed of eight detuned units is finally obtained with a superior broadband absorption spectrum. …
WebApr 5, 2024 · In this paper, a new fractal-based broadband metasurface absorber is developed, which is based on the excellent space-filling ability of the Hilbert fractal. Each unit cell in absorber consists of a micro perforated panel (MPP) and a coplanar coiled cavity. In order to gain a deep insight into the sound absorption mechanism and perform a rapid ... fps metzWebParticle swarm optimization is used to discover different broadband reflector designs, each with different performance advantages including ultra-wide broadband reflectance and polarization independence. All designs exhibit a reflectance of R ≥ ~99% over the range of at least Δ λ / λ0 ≥ ~20% centered at the wavelength λ0 = 1.55 µm. fps mutatóWebA broadband active metasurface is designed around quantum-cascade (QC) gain material for use in a broadband tunable QC vertical external-cavity surface-emitting laser … fps nba 2k21Generally, our design principle can be used to realize various flat optical components without chromatic effect like the broadband achromatic gradient metasurface (BAGMS). The design of a BAGMS to deflect a normally incident light by the same angle in a broad wavelength range is demonstrated (Fig. 5a). The … See more As the most basic and important functional element, converging lens plays a crucial role in various optical systems. The typical distribution of phase retardation for a metalens follows: where \(R{\rm{ = }}\sqrt {x_0^2{\rm{ + … See more In our design, the basic building blocks of the BAML are metallic nano-rods (MNRs) and their assemblies, coupled MNRs. The metal-dielectric-metal structural configuration (insets … See more Employing the proposed policy, a broadband achromatic converging metalens with numerical aperture (NA) = 0.268 is designed and demonstrated. Figure 3a shows the … See more fps na tela cs goWebElectromagnetic metasurfaces have been intensively used as ultra-compact and easy-to-integrate platforms for versatile wave manipulations from optical to terahertz (THz) and millimeter wave (MMW) ranges. In this paper, the less investigated effects of the interlayer coupling of multiple metasurfaces cascaded in parallel are intensively exploited and … fps olcmeWebCross border merger and acquisitions are of two types Inward and Outward. Inward cross border M&A’s involve an inward capital movement due to the sale of an domestic firm to … fps nettbankWebA mode is the means of communicating, i.e. the medium through which communication is processed. There are three modes of communication: Interpretive Communication, … fps omzetter