Results 51 to 60 of about 1,192 (198)
Breaking Reciprocity with Space‐Time‐Coding Digital Metasurfaces [PDF]
Advanced Materials, 2019 AbstractMetasurfaces are artificially engineered ultrathin structures that can finely tailor and control electromagnetic wavefronts. There is currently a strong interest in exploring their capability to lift some fundamental limitations dictated by Lorentz reciprocity, which have strong implications in communication, heat management, and energy ...
Lei Zhang +7 more
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Metasurfaced Reverberation Chamber
Scientific Reports, 2018 The concept of metasurfaced reverberation chamber (RC) is introduced in this paper. It is shown that by coating the chamber wall with a rotating 1-bit random coding metasurface, it is possible to enlarge the test zone of the RC while maintaining the ...
Hengyi Sun +7 more
doaj +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) +9 more
core +1 more source
All-Metal Coding Metasurfaces for Broadband Terahertz RCS Reduction and Infrared Invisibility
Photonics, 2023 With the rapid advancement of modern technology and radar detection systems, electromagnetic (EM) stealth technology has become increasingly significant, particularly in aircraft stealth and military radar applications.
Ming Zhang +6 more
doaj +1 more source
Dynamic radiation steering with transmission-type coding metasurface
Optics Express, 2022 In this paper, we integrate continuous transmission amplitude modulation and phase coding into a metasurface, and dynamic transmitted electromagnetic field manipulation is realized in microwave regime. The active metasurface is obtained by placing a PIN diodes loaded amplitude modulation metasurface on a binary phase coding metasurface whose coding ...
Jianfeng Yang +6 more
openaire +2 more sources
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 +8 more
core +1 more source
Wide-Angle Scanning Graphene-Biased Terahertz Coding Meta-Surface
Micromachines, 2023 We demonstrate a reconfigurable beam steerable meta-surface through a graphene-biased slot-array over a grounded quartz substrate. More specifically, the graphene meta-elements can be dynamically tuned to program the radiations by applying adequate DC ...
Yangyang Xu, Rui Yang, Yan Wang
doaj +1 more source
Shaping electromagnetic waves using software-automatically-designed metasurfaces
Scientific Reports, 2017 We present a fully digital procedure of designing reflective coding metasurfaces to shape reflected electromagnetic waves. The design procedure is completely automatic, controlled by a personal computer.
Qian Zhang +5 more
doaj +1 more source
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 +4 more
doaj +1 more source
One-bit quantization is good for programmable coding metasurfaces
Science China Information Sciences, 2022 The information-carrying programmable metasurfaces has found widespread applications in communication, sensing, and other related areas. However, there is a fundamental but unresolved problem, i.e., the rigorous understanding of the quantization of metasurface coding.
Shuang, Ya +7 more
openaire +2 more sources