Results 31 to 40 of about 903 (183)
Terahertz frequency coding metasurface
Acta Physica Sinica, 2019 Metasurface is an artificial structure composed of sub-wavelength units which can realize the arbitrary control of electromagnetic wave energy by coding and arranging metasurface. Unlike the previous coding metasurface with a fixed phase difference of the neighbor coding unit cells, the frequency coding metasurface possesses the main feature that it ...
Shao-He Li, Jiu-Sheng Li, Jian-Zhong Sun
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Results in Physics, 2023 Multifunctional coding metasurfaces can provide more options for highly integrated terahertz modulators, which has become one of the current research focus. This study proposed a tunable chiral metasurface based on a Dirac semimetal (DSM).
Zhenkai Li +7 more
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An Ultra-Wideband Circular Polarization-Maintaining Metasurface and Its Application in RCS Reduction
IEEE Access, 2021 In this work, a circular polarized (CP) maintaining metasurface is proposed, which can realize ultra-wideband CP-maintaining reflection and make its co-polarization reflection coefficient under CP incidence close to 1.0 in the frequency band 6.2-26.4GHz;
Baoqin Lin +5 more
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Frequency coding metasurface for multiple directions manipulation of terahertz energy radiation
AIP Advances, 2019 A multifunctional frequency coding metasurface is proposed in terahertz frequency band. Different from the previous coding metasurface with a fixed phase difference of the neighbor coding unit cells in the whole working frequency band, the proposed ...
Shao-He Li, Jiu-Sheng Li
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Suppressing Edge Back-Scattering of Electromagnetic Waves Using Coding Metasurface Purfle
Frontiers in Physics, 2020 Edge scattering is one of the main scattering sources for metal objects, especially for those with thin front edges. In this paper, based on the principle of scattering cancelation, a coding metasurface purfle is proposed and employed to suppress the ...
Xinghua Li +7 more
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Manipulation of Terahertz Wave Using Coding Pancharatnam–Berry Phase Metasurface
IEEE Photonics Journal, 2018 Coding metasurface offers a promising way for manipulating electromagnetic waves using several structural metaparticles or changing the metaparticle geometry parameters. It leads to time-consuming optimization in multibit coding designs.
Jiu-sheng Li, Jian-quan Yao
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A New Coding Metasurface for Wideband RCS Reduction [PDF]
Radioengineering, 2018 In this paper, two novel artificial magnetic conductors (AMC) structures are designed to realize 180 degrees of phase difference in a wideband frequency. These two AMC structures are encoded as unit “0”and unit “1”, respectively.
L.R.Ji-Di +5 more
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Digital coding metasurface for Multi-Beam and Multi-Mode OAM in Full-Space
Results in Physics, 2023 A digital coding metasurface is proposed to generate multi-beam and multi-mode orbital angular momentum (OAM) wave in the full space. The 3-bit coding elements are designed for multifunctional integrated digital coding metasurface (MIDCMS) based on the ...
Xiaobin Liu +4 more
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Programmable VO2 metasurface for terahertz wave beam steering
iScience, 2022 Summary: Programmable vanadium dioxide (VO2) metasurface is proposed at THz frequencies. The insulating and metallic states of VO2 can be switched via external electrical stimulation, resulting in the dynamical modulation of electromagnetic response. The
Daquan Yang +6 more
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Breaking Reciprocity with Space‐Time‐Coding Digital Metasurfaces [PDF]
Advanced Materials, 2019 AbstractMetasurfaces are artificially engineered ultrathin structures that can finely tailor and control electromagnetic wavefronts. There is currently a strong interest in exploring their capability to lift some fundamental limitations dictated by Lorentz reciprocity, which have strong implications in communication, heat management, and energy ...
Lei Zhang +7 more
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