Results 1 to 10 of about 1,192 (198)

Electromagnetic reprogrammable coding-metasurface holograms [PDF]

Nature Communications, 2017
Realizing metasurfaces with reconfigurability, high efficiency, and control over phase and amplitude is a challenge. Here, Li et al. introduce a reprogrammable hologram based on a 1-bit coding metasurface, where the state of each unit cell of the coding ...
Lianlin Li, Tie Jun Cui, Wei Ji, Shuo Liu, Jun Ding, Xiang Wan, Yun Bo Li, Menghua Jiang, Cheng-Wei Qiu, Shuang Zhang   +9 more
doaj   +7 more sources

Holographic communication using programmable coding metasurface [PDF]

Nanophotonics
With rapid development of holography, metasurface-based holographic communication scheme shows great potential in development of adaptive electromagnetic function. However, conventional passive metasurfaces are severely limited by poor reconfigurability,
Zhang Fan, Wang Chaohui, Feng Weike, Liu Tong, Wang Zhengjie, Wang Yanzhao, Wang Mingzhao, Xu He-Xiu   +7 more
doaj   +5 more sources

Direct Transmission of Digital Message via Programmable Coding Metasurface [PDF]

Research, 2019
In modern wireless communications, digital information is firstly converted to analog signal by a digital-analog convertor, which is then mixed to high-frequency microwave to be transmitted through a series of devices including modulator, mixer ...
Tie Jun Cui, Shuo Liu, Guo Dong Bai, Qian Ma   +3 more
doaj   +5 more sources

Multitask bidirectional digital coding metasurface for independent controls of multiband and full-space electromagnetic waves [PDF]

Nanophotonics, 2022
Full-space metasurfaces demonstrate powerful abilities in manipulating electromagnetic (EM) waves, but most of them are usually single band. Here, a multiband bidirectional digital coding metasurface is proposed for multiple tasks, which can achieve ...
Wu Liang Wei, Ma Hui Feng, Gou Yue, Wu Rui Yuan, Wang Zheng Xing, Xiao Qiang, Cui Tie Jun   +6 more
doaj   +3 more sources

Amplification and Manipulation of Nonlinear Electromagnetic Waves and Enhanced Nonreciprocity using Transmissive Space‐Time‐Coding Metasurface [PDF]

Advanced Science, 2022
A novel amplifier‐based transmissive space‐time‐coding metasurface is presented to realize strongly nonlinear controls of electromagnetic (EM) waves in both space and frequency domains, which can manipulate the propagation directions and adjust ...
Xin Wang, Jiaqi Han, Shuncheng Tian, Dexiao Xia, Long Li, Tie Jun Cui   +5 more
doaj   +3 more sources

Phase and amplitude simultaneously coding metasurface with multi-frequency and multifunctional electromagnetic modulations [PDF]

Scientific Reports
The integration of multiple functionalities into a single, planar, ultra-compact metasurface has presented significant opportunities for enhancing capacity and performance within compact 5G/6G communication systems.
Chengxin Cai, Yinfei Li, Mingxing Li, Yao Qin, Yangyang Zhou   +4 more
doaj   +3 more sources

Secure wireless communication of brain–computer interface and mind control of smart devices enabled by space-time-coding metasurface [PDF]

Nature Communications
Brain–computer interface (BCI) provides an interconnected pathway between the human brain and external devices and paves a potential route for mind manipulations.
Qiang Xiao, Lin Han Fan, Qian Ma, Yu Ming Ning, Ze Gu, Long Chen, Lianlin Li, Jian Wei You, Ya Feng Niu, Tie Jun Cui   +9 more
doaj   +3 more sources

Multifunctional movable-type coding metasurface enabling reconfigurable diffractive neural networks [PDF]

Light: Science & Applications
Optical computing holds significant promise across diverse applications due to its low latency, power efficiency, and multidimensional processing capabilities. However, current diffraction neural networks (DNNs) generally lack reconfigurability, limiting
Zhicai Yu, Xinyu Li, Ze Gu, Long Chen, Jianlin Su, Zixuan Cai, Xinyi Yu, Shilong Qin, Lei Zhang, Qian Ma, Jian Wei You, Tie Jun Cui   +11 more
doaj   +2 more sources

Continuous manipulation of electromagnetic radiation based on ultrathin flexible frequency coding metasurface [PDF]

Scientific Reports
The physical characteristics of electromagnetic waves are combined with digital information in coding metasurfaces. Coding metasurfaces enable precise control of beams by flexibly designing coding sequences.
Min Jia, Chao Zhao, Zhouhao Tang, Ziliang Jin, Ningtao Zhang, Xiaofeng Han   +5 more
doaj   +2 more sources

Switchable coding metasurface for flexible manipulation of terahertz wave based on Dirac semimetal

Results in Physics, 2022
In this study, a switchable coding metasurface was demonstrated in the terahertz (THz) frequency range to realize dynamic beam steering based on a Dirac semimXetal.
Jingjing Huang, Xiaona Yin, Man Xu, Meng Liu, Yuping Zhang, Huiyun Zhang   +5 more
doaj   +3 more sources