Results 51 to 60 of about 674 (191)

Recent advances and perspectives on space-time coding digital metasurfaces [PDF]

EPJ Applied Metamaterials, 2020
Within the overarching framework of space-time metastructures, digital metasurfaces based on spatio-temporal coding are emerging as powerful and versatile architectures for complex field manipulations, also in view of their inherently programmable nature. Here, we provide a compact survey of our recent results and ongoing studies in this research area.
Lei Zhang, Jun Yan Dai, Massimo Moccia, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +5 more
openaire   +2 more sources

4-Bit Optimized Coding Metasurface for Wideband RCS Reduction

IEEE Access, 2019
In this paper, a 4-bit reflective coding metasurface with the polarization-insensitive unit cell is designed for wideband radar cross section (RCS) reduction.
Yasir Saifullah, Abu Bakar Waqas, Guo-Min Yang, Fuheng Zhang, Feng Xu   +4 more
doaj   +1 more source

Terahertz Dual-Band Dual-Polarization 3-Bit Coding Metasurface for Multiple Vortex Beams Generation

, 2023
Terahertz technology and vortex beams have demonstrated powerful capabilities in enhancing the channel capacity of communication systems. This work proposes a design strategy of dual-band and dual-function 3-bit coding metasurface based on beam ...
Xueqi Zheng, Gong Cheng, Jun Ding, Pengcheng Tang, Tianyu Ma, Houjun Sun, Genhao Wu, Liming Si, Xiue Bao   +8 more
core   +1 more source

Design of a Wide-Angle and Polarization-Free 1-Bit Programmable Metasurface

Frontiers in Materials, 2022
Programmable metasurfaces have the powerful capability of controlling electromagnetic (EM) waves by coding the digital state of each meta-atom. However, conventional programmable metasurface units are difficult to maintain stable controllability under ...
Lu Liu, Yi Fei Huang, Hao Chi Zhang
doaj   +1 more source

A fractional phase-coding strategy for terahertz beam patterning on digital metasurfaces

Optics Express, 2020
Coding metasurfaces have drawn great attention for its digital wave manipulation in deep subwavelength-scale in the last decade, more sophisticated and flexible coding strategies suitable for terahertz wavefront manipulations are becoming more urgently demanded.
Luyang Wang, Feng Lan, Yaxin Zhang, Shixiong Liang, Wenxin Liu, Ziqiang Yang, Lin Meng, Zongjun Shi, Jing Yin, Tianyang Song, Hongxin Zeng, Pinaki Mazumder   +11 more
openaire   +2 more sources

Programmable Amplitude‐Coding Metasurface with Multifrequency Modulations

Advanced Intelligent Systems, 2021
Recently, programmable metasurfaces have aroused great attention for various applications such as beam manipulation, wireless communication, and holograms by modulating the spatial phase or amplitude.
Qiao Ru Hong, Qian Ma, Xin Xin Gao, Che Liu, Qiang Xiao, Shahid Iqbal, Tie Jun Cui   +6 more
doaj   +1 more source

A Novel Coding Metasurface for Wireless Power Transfer Applications

, 2019
We propose and implement a novel 1-bit coding metasurface that is capable of focusing and steering beam for enhancing power transfer efficiency of the electromagnetic (EM) wave-based wireless power transfer systems. The proposed metasurface comprises 16 &
Muhammad Miftahul Amri, Nguyen Minh Tran, Kae Won Choi, Sa Il Hwang, Je Hyeon Park, Dong In Kim   +5 more
core   +1 more source

Wideband RCS Reduction Using Coding Diffusion Metasurface

, 2019
This paper presents a radar cross-section (RCS) reduction technique by using the coding diffusion metasurface, which is optimised through a random optimization algorithm.
Xiaoming Chen, Luqman Ali, Jianjia Yi, Qinlong Li, Tayyab Ali Khan   +4 more
core   +1 more source

Joint Modulations of Electromagnetic Waves and Digital Signals on a Single Metasurface Platform to Reach Programmable Wireless Communications

Engineering, 2022
In current wireless communication and electronic systems, digital signals and electromagnetic (EM) radiation are processed by different modules. Here, we propose a mechanism to fuse the modulation of digital signals and the manipulation of EM radiation ...
Xiang Wan, Chaokun Xiao, He Huang, Qiang Xiao, Wei Xu, Yueheng Li, Joerg Eisenbeis, Jiawei Wang, Ziai Huang, Qiang Cheng, Shi Jin, Thomas Zwick, Tiejun Cui   +12 more
doaj   +1 more source

Generation of superhelical time-varying OAM beam with space-time-coding digital metasurface

, 2022
The recently proposed extreme-ultraviolet (EUV) beams with time-varying orbital angular momentum (OAM) realized by high-harmonic generation (HHG) provides extraordinary tools for quantum excitation control and particle manipulation.
Peixing Li (14362017), Alex M H Wong (14362020), Jensen Li (1914004), Jingxin Zhang (737647)   +3 more
core   +1 more source