Results 31 to 40 of about 67,247 (341)
Perfect Anomalous Reflection with a Binary Huygens' Metasurface [PDF]
, 2018 In this paper we propose a new metasurface that is able to reflect a known incoming electromagnetic wave into an arbitrary direction, with perfect power efficiency.
Eleftheriades, George V. +1 more
core +6 more sources
Metasurface-driven full-space structured light for three-dimensional imaging
Nature Communications, 2022 Structured light (SL)-based depth-sensing technology illuminates the objects with an array of dots, and backscattered light is monitored to extract three-dimensional information.
Gyeongtae Kim +9 more
semanticscholar +1 more source
Parametric Testing of Metasurface Stirrers for Metasurfaced Reverberation Chambers [PDF]
Sensors, 2019 In this paper, the correlation coefficients and the total scattering cross sections (TSCSs) for different types of metasurfaced stirrers and the traditional metallic stirrer, and the effects on field uniformity when such stirrers are used in reverberation chambers, are analyzed.
Hengyi Sun +9 more
openaire +7 more sources
Shaping elastic wavefront through zigzag-folded metasurfaces
Frontiers in Physics, 2023 We present a reconfigurable elastic metasurface design composed of an array of zigzag-folded sheets with parallel corrugations to control the wavefront of the refracted A0 Lamb mode wave.
Zhenkun Lin, Serife Tol
doaj +1 more source
Controllable Manipulation of Wi-Fi Signals Using Tunable Metasurface
Leida xuebao, 2021 In this paper, we propose the utilization of a programmable metasurface for flexibly manipulating ambient Wi-Fi signals. First, we propose a new and efficient optimization algorithm CWGS (Complex Weighted Gerchberg-Saxton), which is based on an ...
Ya SHUANG +4 more
doaj +1 more source
Design of Planar and Conformal, Passive, Loss-less Metasurfaces that Beamform [PDF]
, 2021 A general technique for synthesizing both planar and conformal beamforming metasurfaces is presented that utilizes full-wave modeling techniques and rapid optimization methods. The synthesized metasurfaces consist of a patterned metallic cladding supported by a finite-size grounded dielectric substrate.
arxiv +1 more source
A Differential Modulation Scheme for Metasurface-Based Terahertz Communications
Frontiers in Communications and Networks, 2021 Metasurface-based terahertz (THz) modulators, which carry information by changing the spatial pattern of the metasurface at every symbol time, are an important component to establish low-cost low-energy–consuming THz communication systems.
Shuaishuai Guo, Jia Ye, Peng Zhang
doaj +1 more source
Journal of Optics, 2019 Abstract Metasurfaces are thin two-dimensional metamaterial layers that allow or inhibit the propagation of electromagnetic waves in desired directions. For example, metasurfaces have been demonstrated to produce unusual scattering properties of incident plane waves or to guide and modulate surface waves to obtain desired radiation ...
Nikitas Papasimakis +34 more
openaire +10 more sources
Nature Reviews Materials, 2018 Acoustic metasurfaces derive their characteristics from the interaction between acoustic waves and specifically designed materials. The field is driven by the desire to control acoustic wave propagation using compact devices and is governed by fundamental and physical principles that provide the design rules and the functionality of a wave.
Badreddine Assouar +5 more
openaire +4 more sources
Active nonlocal metasurfaces [PDF]
Nanophotonics, 2020 AbstractActively tunable and reconfigurable wavefront shaping by optical metasurfaces poses a significant technical challenge often requiring unconventional materials engineering and nanofabrication. Most wavefront-shaping metasurfaces can be considered “local” in that their operation depends on the responses of individual meta-units.
Adam C. Overvig +4 more
openaire +5 more sources