Propagation phase metasurface
WebFeb 25, 2024 · A transmission phase-shifted metasurface (PSM) array has been proposed for non-diffractive beam deflection. A PSM element consists of two identical semicircular … WebNov 4, 2024 · A metasurface with novel dual linear polarization reflective element generates two OAM modes is analyzed and designed. The element consists of a cross patch and four phase delay lines on both sides of the substrate, connected by metal vias for cell minimization. The simulation results show that the phase and amplitude of two modes on …
Propagation phase metasurface
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WebMar 15, 2024 · Metasurfaces, the equivalent two-dimensional (2D) metamaterials, are thin-film functional devices constructed by subwavelength structures. Abrupt phase changes can be obtained in the planar metasurface structures over the subwavelength scale, which provide a new avenue to enable a variety of applications, including large scale planar … WebOct 26, 2024 · Here, a dynamic phase-change metasurface design that enables transmissive phase modulation covering over 240° with high-level transmisstance maintained over 0.8 …
WebApr 12, 2024 · This metasurface, introduced in Nature Electronics, was created using a series of self-biased magnetic meta-atoms made of lanthanum(La)-doped barium hexaferrite (BaFe 12 O 19). "We report a self-biased non-reciprocal metasurface based on magnetic meta-atoms made from La-doped BaFe 12 O 19," Weihao Yang, Jun Qin and … WebApr 1, 2024 · Phase-modulated metasurfaces (PMMs) have attracted considerable attention because of their widespread application in many fields. However, the most existing PMMs are only available in a relatively narrow band. In this paper, we propose a design of a broadband PMM based on vanadium dioxide (VO2) patches. The unit cell of the proposed …
WebThe metasurface approach is distinct in that it provides continuous control of the phase profile (i.e., from 0 to 2π) with a binary structure (only two levels of thickness), circumventing the fundamental limitation of multiple diffraction orders while maintaining the size, weight, and ease-of-fabrication advantages of planar diffractive optics ( … WebPhase gradient metasurface (PGM) is an anisotropic artificial surface with sub-wavelength ... propagation with phase discontinuities: Generalized laws of reflection and refraction, ...
WebMar 7, 2024 · This phase profile is obtained assuming that the light propagation within the metasurface behaves as a Fabry–Perot cavity where multiple coherent reflections interfere to form the output beam. Once optimized, the phase is realized using a library of dielectric nanostructures obtained using finite-difference time domain (FDTD) simulations.
WebAug 15, 2024 · The Marius' law and Propagation phase can control the size and rotation angle of meta-atoms to encode grayscale amplitude images and holographic phase images. Finite-difference time-domain simulation results reveal that dual channel metasurface under a single line source achieves the same display effect as the dual channel metasurface … bishop gilbert sheldonWebFeb 21, 2024 · Metasurface is an artificial material composed of a series of subwavelength structure units and has unique electromagnetic characteristics. Based on the ability of manipulating the phase, amplitude, and polarization of electromagnetic wave, various kinds of metasurfaces are designed to realize wavefront manipulations, such as beam focusing, … bishop gilpin half termWebOct 28, 2024 · Nonresonant propagation phase realized through open-ended transmission line is introduced as an additional degree of freedom to achieve totally independent phase responses of the orthogonal... bishop gilbert patterson prayerWebThe metasurface breaks the symmetry and realizes different functions for opposite propagation directions, such as deflection and focusing, orbital angular momentum (OAM) mode generation, and holographic imaging. ... θ 1, and θ 2 of the Janus metasurface, the desired phase values can be obtained, which provide further possibilities for the ... dark king rayleigh bountyWebHarvard University bishop gilpin admissionsWebAug 31, 2015 · Here, we show a metasurface platform based on high-contrast dielectric elliptical nanoposts that provides complete control of polarization and phase with subwavelength spatial resolution and an... bishop gilbert patterson funeral youtubeWebOct 18, 2024 · The propagation phase associated with the geometric phase of rectangular dielectric nanostructures plays a critical role to embed a dual phase response into a … bishop gilpin term dates