Results 31 to 40 of about 674 (191)

Space-time-coding digital metasurfaces [PDF]

Nature Communications, 2018
AbstractThe recently proposed digital coding metasurfaces make it possible to control electromagnetic (EM) waves in real time, and allow the implementation of many different functionalities in a programmable way. However, current configurations are only space-encoded, and do not exploit the temporal dimension. Here, we propose a general theory of space-
Lei Zhang, Xiao Qing Chen, Shuo Liu, Qian Zhang, Jie Zhao, Jun Yan Dai, Guo Dong Bai, Xiang Wan, Qiang Cheng, Giuseppe Castaldi, Vincenzo Galdi, Tie Jun Cui   +11 more
openaire   +4 more sources

Light‐Controllable Digital Coding Metasurfaces [PDF]

Advanced Science, 2018
AbstractSince the advent of digital coding metamaterials, a new paradigm is unfolded to sample, compute and program electromagnetic waves in real time with one physical configuration. However, one inconvenient truth is that actively tunable building blocks such as diodes, varactors, and biased lines must be individually controlled by a computer ...
Xin Ge Zhang, Wen Xuan Tang, Wei Xiang Jiang, Guo Dong Bai, Jian Tang, Lin Bai, Cheng‐Wei Qiu, Tie Jun Cui   +7 more
openaire   +2 more sources

Digital Metasurfaces: Light‐Controllable Digital Coding Metasurfaces (Adv. Sci. 11/2018) [PDF]

Advanced Science, 2018
A remote‐mode metasurface addressed and tuned by illuminating light is proposed and realized by Wei Xiang Jiang, Cheng‐Wei Qiu, Tie Jun Cui, and co‐workers in article number https://doi.org/10.1002/advs.201801028. By tuning the intensity of the illuminating light, a digital coding metasurface enables dynamically reconfigurable radiation beams in a ...
Zhang, Xin Ge, Tang, Wen Xuan, Jiang, Wei Xiang, Bai, Guo Dong, Tang, Jian, Bai, Lin, Qiu, Cheng‐Wei, Cui, Tie Jun   +7 more
openaire   +1 more source

Digital Polarization Programmable Metasurface for Continuous Polarization Angle Rotation and Radar Applications

Frontiers in Materials, 2022
Polarization angle manipulation has been a vital technic in radar applications. This paper proposes and demonstrates a digital polarization programmable metasurface for continuous polarization angle rotation and radar applications.
Yidan Wang, Hongyu Shi, Hongyu Shi, Juan Chen, Jianjia Yi, Liang Dong, Anxue Zhang, Haiwen Liu   +7 more
doaj   +1 more source

Programmable Manipulations of Terahertz Beams by Graphene-Based Metasurface With Both Amplitude and Phase Modulations

Frontiers in Materials, 2022
Terahertz metasurface with digital, programmable control recently gained considerable attention for its potential applications in high-speed imaging, nondestructive sensing, and wireless communication.
Chenxi Liu, Fei Yang, Xiaojian Fu, Junwei Wu, Lei Zhang   +4 more
doaj   +1 more source

Experimental demonstration of a time-domain digital-coding metasurface for a Doppler cloak

Optics Express, 2021
By generating an artificial Doppler shift, a Doppler cloak can compensate for the Doppler shift from a moving object. An object covered by a Doppler cloak will be detected as a static object, even if it is actually moving. Herein, we experimentally demonstrate the Doppler cloak in a radar system using a time-domain digital-coding metasurface.
Baiyang Liu, Yejun He, Sai-Wai Wong, Yin Li   +3 more
openaire   +2 more sources

Wide Band Beam Steering Digital Metasurface Reflectarray Antenna for Millimeter Wave Applications

IEEE Access, 2023
A compact wideband digital metasurface reflectarray antenna for millimeter-wave application is presented in this article. The metasurface reflectarray is composed of periodic arrangements of metabit unit cell elements.
Gazali Bashir, Amit K. Singh, Ankit Dubey   +2 more
doaj   +1 more source

Dual-channel near-field holographic MIMO communications based on programmable digital coding metasurface and electromagnetic theory. [PDF]

Nat Commun
Holographic multiple-input multiple-output (MIMO) method leverages spatial diversity to enhance the performance of wireless communications and is expected to be a key technology enabling for high-speed data services in the forthcoming sixth generation ...
Shao RW, Wu JW, Li J, Meng S, Xu Y, Wang ZX, Tang W, Cheng Q, Jin S, Cui TJ.   +9 more
europepmc   +2 more sources

A programmable digital metasurface structure designed using ANN technique [PDF]

, 2023
In this paper, an 8-bit programmable digital metasurface is designed in the operating frequency range from 4 to 7 GHz. A monopole antenna operating at 5 GHz is characterised by using a metasurface structure as the ground plane.
Fatih Özkan Alkurt, Alkurt, Fatih Özkan, Altıntaş, Olcay, Amir H. Nazeri, Muharrem Karaaslan, Altıntarla, Gizem, Emin Ünal, Altintarla, Gizem, Ünal, Emin, Altintas, Olcay, Gençoğlan, Duygu N., Çolak, Şule, Duygu N. Gençoğlan, Nazeri, Amir H., Şule Çolak, Olcay Altıntaş, Gizem Altıntarla   +16 more
core   +1 more source

Digital coding THz dynamical multi-band perfect absorber via graphene/diamond metasurface

, 2023
The monolayer graphene-based terahertz (THz) perfect absorber has made significant progress in switchable devices with diverse functionalities. However, the prior approaches to achieving switchability rely on either multi-layered metasurface with complex
Hongxing Wang (3165948), Huapeng Ye (5813426), Zheng Li (26302), Yang Lei (136316), Muhua Zhai (17698680), Shaowei Zhang (1415611), Yanpeng Zhang (3863932), Yangxin Gu (17698683), Hengxi Zhang (5883422), Feng Wen (454919)   +9 more
core   +1 more source