Results 121 to 130 of about 570,053 (282)

Metasurfaces and Metadevices for Topological Electromagnetic Waves

Advanced Physics Research, EarlyView.
Optical topologies refer to diverse topological localized structures made by diverse parameters of light fields, such as vortices, skyrmions, and hopfions. This article navigates a direction of metasurface‐based integrated devices for generation, manipulation and detection of novel topologies of light, which would be a rapidly growing interdisciplinary
Rensheng Xie, Nilo Mata‐Cervera, Xi Xie, Yijie Shen   +3 more
wiley   +1 more source

Multifunctional Metasurfaces for Bridging Terahertz Waves in Free Space and Waveguides

Advanced Physics Research, EarlyView.
A multifunctional terahertz metasurface capable of simultaneous orthogonal polarization conversion and phase modulation is integrated onto a dielectric slab waveguide, thereby enabling efficient free‐space‐to‐guided‐wave coupling. By implementing tailored phase gradients on the metasurface, we demonstrate the formation of a focused spot within the ...
Jinhui Lu, Yushan Chen, Min Zhang, Hong Su, Ling Li, Huawei Liang   +5 more
wiley   +1 more source

Reconfigurable Metasurface Antenna Based on the Liquid Metal for Flexible Scattering Fields Manipulation. [PDF]

Micromachines (Basel), 2021
Qian T.
europepmc   +1 more source

High-Gain Dual-Polarization Microstrip Antenna Based on Transmission Focusing Metasurface

Materials
In this paper, a single-feed microstrip antenna (MA) equipped with a transmission-mode focusing metasurface (MS) is proposed to achieve dual-polarization capabilities and superior high-gain radiation performance.
Yibo Sun, Bin Cai, Lingling Yang, Lingxiao Wu, Yongzhi Cheng, Hui Luo, Fu Chen, Xiangcheng Li   +7 more
semanticscholar   +1 more source

Metalens‐Enabled Twisted Chromatic Dispersion

Advanced Physics Research, EarlyView.
We successfully demonstrate visible broadband twisted dispersion metalenses. As a proof of concept, we realized two distinct devices: the conical helical and the spring‐like dispersion‐controlled metalenses. These results rigorously validate the universality of our approach in customizing arbitrary continuous 3D dispersion trajectories, thereby ...
Shiyu Zheng, Boyan Fu, Hong Zhang, Shuming Wang   +3 more
wiley   +1 more source

Beam steerable MIMO antenna based on conformal passive reflective metasurface for 5G millimeter wave applications

Scientific Reports
A conformal reflective metasurface fed by a dual-band multiple-input multiple-output (MIMO) antenna is proposed for low-cost beam steering applications in 5G Millimeter-wave frequency bands.
Bilal Tariq Malik, Shahid Khan, Slawomir Koziel   +2 more
doaj   +1 more source

Automated Synthesis of Metasurface Antennas

, 2021
This paper proposes an algorithm for the automated design of metasurface antennas. From the knowledge of an objective radiation field and of an incident field, it allows to synthesize the required surface impedance on the radiating aperture. A scalar impedance boundary condition is employed in the integral equation formulation of the electromagnetic ...
Zucchi, Marcello, Vernì,Francesco, Righero, Marco, Vecchi, Giuseppe   +3 more
openaire   +1 more source

Halide perovskites in wide‐spectrum photodetection

Bulletin of the Korean Chemical Society, EarlyView.
Recent advances in perovskite‐based photodetectors (PPDs), phototransistors, and photoconductors are technically discussed in this review. Moreover, the mechanism behind different harvesting processes in perovskite following the energy of photons is explained, where the gamma or x‐rays are ionizing.
Somayeh Gholipour, Reza Rahighi, Mohammad Panahi, Muhammad Naufal Lintangpradipto, Reza Ghayoor, Michael Saliba   +5 more
wiley   +1 more source

Metasurface Enhanced Photothermal Cement Foam for Robust and High‐Throughput Seawater Desalination

Carbon Energy, EarlyView.
Schematic of 3D metasurface‐enhanced cement foam for robust and high‐throughput seawater desalination. This study presents a cement‐based solar evaporator (CSE) fabricated in one step via viscoelastic lithography with simple negative pressure. In addition to boosting solar‐to‐vapor conversion efficiency via excellent light‐harvesting capacity, the ...
Jianjun Guo, Zhenxing Du, Wenqiang Zuo, Zhangyu Wu, Wei She   +4 more
wiley   +1 more source

Design of High-Gain Linear Polarized Fabry–Perot Antenna Based on Minkowski Fractal Structure

Fractal and Fractional
High-gain linear polarized antennas are widely used in wireless communications. However, the insertion loss of the feed network increases, limiting the potential for enhancing antenna gain.
Wei Hu, Liangfu Peng, Tao Tang, Maged A. Aldhaeebi, Thamer S. Almoneef   +4 more
doaj   +1 more source