Zobrazeno 1 - 10
of 505
pro vyhledávání: '"Anomalous reflection"'
Publikováno v:
Materials, Vol 17, Iss 19, p 4730 (2024)
The manipulation of electromagnetic waves using metasurfaces is important in areas such as stealth and communication. In this paper, we reported on the use of an element-based polarizer for the first step, which enables the incident electromagnetic w
Externí odkaz:
https://doaj.org/article/1ed114f477a748bebc686f526650a5e1
Publikováno v:
Materials, Vol 17, Iss 9, p 2003 (2024)
Reconfigurable intelligent surfaces (RISs) have the potential to improve wireless communication links by dynamically redirecting signals to dead spots. Although a reconfigurable surface is best suited for environments in which the reflected signal mu
Externí odkaz:
https://doaj.org/article/2380854e86f14a97b1a471b3c1d7d695
Akademický článek
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Autor:
Hongyuan Zhu, Zhengyong Song
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 4, Pp 1-5 (2022)
Benefiting from the unprecedented superiority of phase change material on manipulating electromagnetic wave, germanium antimony telluride-based optical devices attract a lot of attention. Here, based on Pancharatnam-Berry phase, reflective metasurfac
Externí odkaz:
https://doaj.org/article/433bf684822a4e5e8d4f123a49f2d4a3
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 4, Pp 1-5 (2022)
Metasurfaces with dynamically switchable functions have received extensive attention, and are in high demand in various applications. In this work, dynamically switchable metasurfaces are proposed based on phase change material-vanadium dioxide. They
Externí odkaz:
https://doaj.org/article/5aff10dad7454a49ade8caee1db1e45d
Autor:
Ali Araghi, Mohsen Khalily, Mahmood Safaei, Amirmasood Bagheri, Vikrant Singh, Fan Wang, Rahim Tafazolli
Publikováno v:
IEEE Access, Vol 10, Pp 2646-2655 (2022)
Here, we first aim to explain practical considerations to design and implement a reconfigurable intelligent surface (RIS) in the sub-6 GHz band and then, to demonstrate its real-world performance. The wave manipulation procedure is explored with a di
Externí odkaz:
https://doaj.org/article/21d026bd2f1b49b2a44e5a6f403daf67
Akademický článek
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Publikováno v:
Crystals, Vol 13, Iss 5, p 846 (2023)
We numerically and experimentally investigated the behavior of high-frequency underwater ultrasounds reflected by gradient acoustic metasurfaces. Metasurfaces were fabricated with a periodic array of gradient slits along the surface of a steel specim
Externí odkaz:
https://doaj.org/article/9ef1957c12d74ffcbc1ad71106fe1c29
Wave Scattering by a Planar Junction Between Anomalously Reflecting Metasurface and Impedance Sheets
Autor:
Suleyman Burak Celik, Huseyin Canbolat
Publikováno v:
IEEE Access, Vol 9, Pp 135689-135696 (2021)
Metasurface technology has become one of the promising structures for controlling and manipulating of the phase and amplitude characteristics of the electromagnetic waves in recent years. For this reason, the determination of the exact diffracted fie
Externí odkaz:
https://doaj.org/article/0d624812bf5647feb4f66b63a8c772d2
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 1, Pp 26-40 (2020)
This paper addresses the analysis and design of a new class of metasurface leaky-wave antennas (LWAs) that inherently have low monostatic radar cross section (RCS) for normal incidence parallel polarization. The impedance profile of these antennas is
Externí odkaz:
https://doaj.org/article/120c1ce340104e7e88c15ad25171d412