Results 151 to 160 of about 674 (191)

Multifunctional metasurface coding for visible vortex beam generation, deflection and focusing. [PDF]

Nanophotonics
Tian R, Zhang Z, Gao L.
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Chiral Grayscale Imaging Based on a Versatile Metasurface of Spin-Selective Manipulation. [PDF]

Materials (Basel)
Cao Y, Sun YF, Zhu ZY, Luo QW, Zhang BX, Sun XW, Song T.   +6 more
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Broadband digital coding metasurface holography

Journal of Applied Physics, 2021
Digital coding metasurfaces composed of subwavelength meta-atoms can flexibly control electromagnetic waves to achieve holography, which has great potential in millimeter-wave imaging systems and data storage. In this paper, we propose a 3-bit reflective digital coding metasurface.
Qiang Xiao, Qian Ma, Liang Wei Wu, Yue Gou, Jia Wei Wang, Wei Han Li, Rui Zhe Jiang, Xiang Wan, Tie Jun Cui   +8 more
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Programmable Digital-coding-feeding Metasurfaces

2021 International Applied Computational Electromagnetics Society (ACES-China) Symposium, 2021
Metasurfaces, which could control electromagnetic (EM) waves in different characteristics by arranging the artificial micro-structures on a flat interface. In recent years, programmable metasurface is introduced to control the EM waves with multi-function.
Si Jia Li, Zhuo Yue Li, Bo Wen Han, Guo Shuai Han, Xiang Yu Cao   +4 more
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Intelligent autoencoder for space-time-coding digital metasurfaces

Applied Physics Letters, 2023
Space-time-coding (STC) digital metasurfaces provide a powerful platform for simultaneous spatiotemporal modulations of electromagnetic waves. Therefore, the fast and accurate generation of STC matrices based on desired harmonic scattering patterns can help STC metasurfaces enhance their practicality in various applications.
Xiao Qing Chen, Lei Zhang, Tie Jun Cui
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Recent Advances in Space-Time-Coding Digital Metasurfaces

2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), 2020
We provide a compact summary of our recent results and ongoing research on digital metasurfaces based on spatio-temporal coding. Examples of field manipulations include harmonic beam steering and/or shaping and programmable nonreciprocal effects. Possible applications range from wireless communications to radars and imaging.
L. Zhang, X. Q. Chen, R. W. Shao, J. Y. Dai, Q. Cheng, M. Moccia, G. Castaldi, T. J. Cui, V. Galdi   +8 more
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Multitasking Shared Aperture Enabled with Multiband Digital Coding Metasurface

Advanced Optical Materials, 2018
AbstractDigital coding metasurface is aimed at building up a bridge between physics and information science. Higher information capacity of the digital coding metasurface means more powerful ability to control electromagnetic waves. Here, a multiband digital coding metasurface to improve the information capacity is proposed.
Shahid Iqbal, Lei Bao, Tie Jun Cui
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Machine‐Learning Designs of Anisotropic Digital Coding Metasurfaces

Advanced Theory and Simulations, 2018
Abstract Digital coding representations of meta‐atoms make it possible to realize intelligent designs of metasurfaces by means of machine learning algorithms. Here, a machine‐learning method to design anisotropic digital coding metasurfaces is proposed, and meta‐atoms may require any absolute phase values at different positions and ...
Qian Zhang, Che Liu, Xiang Wan, Lei Zhang, Shuo Liu, Yan Yang, Tie Jun Cui   +6 more
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Restriction on the Purity of OAM Modes Generated by Digital and Coding Metasurfaces

2021 IEEE 4th International Conference on Electronic Information and Communication Technology (ICEICT), 2021
We studied the influence of digital metasurfaces with different phase quantization levels on the purity of OAM modes, and proposed the concept of phase sampling frequency. It is verified by simulation, and the results are in good agreement with the theory.
Sizhe Zhang, Li Deng, Chen Zhang, Shufang Li, Botao Feng, Lijie Chen   +5 more
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Space-Energy Digital-Coding Metasurface Based on an Active Amplifier

Physical Review Applied, 2019
Power amplifiers display some interesting physical phenomena, such as nonreciprocity, but their characteristics have not been fully explored. In this study of the detailed relationship between supply power and amplification, the authors combine a coding metasurface with active amplifiers to realize arbitrary editing of the spatial distribution of a ...
Lei Chen, Qian Ma, Hong Bo Jing, Hao Yang Cui, Yi Liu, Tie Jun Cui   +5 more
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