Results 21 to 30 of about 963 (133)

Microwave Speech Recognizer Empowered by a Programmable Metasurface. [PDF]

Adv Sci (Weinh)
AbstractSpeech recognition becomes increasingly important in the modern society, especially for human–machine interactions, but its deployment is still severely thwarted by the struggle of machines to recognize voiced commands in challenging real‐life settings: oftentimes, ambient noise drowns the acoustic sound signals, and walls, face masks or other ...
Zhang H, Ruan H, Zhao H, Wang Z, Hu S, Cui TJ, Del Hougne P, Li L.   +7 more
europepmc   +5 more sources

Programmable topological metasurface to modulate spatial and surface waves in real time

Nanophotonics
We propose a programmable topological metasurface to integrate intelligent modulations of spatial and surface waves. A general design method is presented to design the programmable metasurface elements with PIN diodes. The surface waves can be controlled
Jian Wei You, Tie Jun Cui, Yu Ming Ning
exaly   +2 more sources

Wireless microwave-to-optical conversion via programmable metasurface without DC supply [PDF]

Nature Communications
Microwave-optical interaction and its effective utilization are vital technologies at the frontier of classical and quantum sciences for communication, sensing, and imaging.
Xin Ge Zhang, Ya Lun Sun, Bingcheng Zhu, Han Wei Tian, Bo Yuan Wang, Zaichen Zhang, Cheng-Wei Qiu, Tie Jun Cui, Wei Xiang Jiang   +8 more
doaj   +2 more sources

A Dual‐Polarization Programmable Metasurface for Green and Secure Wireless Communication [PDF]

Advanced Science
Dual‐polarization programmable metasurfaces can flexibly manipulate electromagnetic (EM) waves while providing approximately twice the information capacity. Therefore, they hold significant applications in next‐generation communication systems.
Zheng Xing Wang, Jun Wei Wu, Hui Xu, Jun Yan Dai, Shuo Liu, Qiang Cheng, Tie Jun Cui   +6 more
doaj   +2 more sources

Programmable polariton canalization in reconfigurable metasurfaces. [PDF]

Sci Adv
The topological transition of polariton dispersion in twisted van der Waals layers at the photonic magic angle results in the diffraction-less and collimated propagation state, termed canalization regime. This type of robust transport of polaritons (i.e., polariton canalization) holds promise for subwavelength control of energy flows. However, the lack
Xu Y, Su X, Deng F, Wang Y, Yang Y, Alonso-González P, Chen H, Li J, Duan J, Guo Z.   +9 more
europepmc   +4 more sources

Broadband Achromatic Programmable Electromagnetic Camouflage via Fluidic‐Accessible Metasurface [PDF]

Advanced Science
Broadband and reconfigurable illusion camouflage remains a major challenge in electromagnetic wave manipulation, as it imposes concurrent demands for precise dispersion control together with reliable real‐time switching across wide frequency ranges ...
Shipeng Liu, Jiahao Zhang, Jiale Wang, Zeyao Chen, Zhaotong Yu, Jinhong Luo, Jiabao Luo, Rujia Cao, Shuxi Gong, Qingxin Guo, Ping Li, Rujiang Li, Ke Chen, Yongtao Jia, Ying Liu   +14 more
doaj   +2 more sources

Physics‐Informed Inverse Design of Programmable Metasurfaces

Advanced Science
Emerging reconfigurable metasurfaces offer various possibilities for programmatically manipulating electromagnetic waves across spatial, spectral, and temporal domains, showcasing great potential for enhancing terahertz applications.
Yucheng Xu, Jia‐Qi Yang, Kebin Fan, Sheng Wang, Jingbo Wu, Caihong Zhang, De‐Chuan Zhan, Willie J. Padilla, Biaobing Jin, Jian Chen, Peiheng Wu   +10 more
doaj   +3 more sources

On the Use of Programmable Metasurfaces in Vehicular Networks [PDF]

2021 IEEE 22nd International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2021
Peer ...
Saeed, Taqwa, Aziz, Waqar, Pitsillides, Andreas, Vassiliou, Vasos, Akyildiz, Ian, Taghvaee, Hamidreza, Abadal Cavallé, Sergi, Liaskos, Christos, Tsioliaridou, Ageliki, Ioannidis, Sotiris, Emoyon-Iredia, Ehizogie, Lestas, Marios   +11 more
openaire   +1 more source

Controllable Manipulation of Wi-Fi Signals Using Tunable Metasurface

Leida xuebao, 2021
In this paper, we propose the utilization of a programmable metasurface for flexibly manipulating ambient Wi-Fi signals. First, we propose a new and efficient optimization algorithm CWGS (Complex Weighted Gerchberg-Saxton), which is based on an ...
Ya SHUANG, Li LI, Zhuo WANG, Menglin WEI, Lianlin LI   +4 more
doaj   +1 more source

All‐Dielectric Programmable Huygens' Metasurfaces [PDF]

Advanced Functional Materials, 2020
AbstractLow‐loss nanostructured dielectric metasurfaces have emerged as a breakthrough platform for ultrathin optics and cutting‐edge photonic applications, including beam shaping, focusing, and holography. However, the static nature of their constituent materials has traditionally limited them to fixed functionalities.
Leitis, Aleksandrs, Heßler, Andreas, Wahl, Sophia, Wuttig, Matthias, Taubner, Thomas, Tittl, Andreas, Altug, Hatice   +6 more
openaire   +6 more sources