Results 101 to 110 of about 526,512 (257)

Metasystems for Space Plasma Propulsion and Emerging Applications: New Fabrication Strategies, Coupled Architectures and Structured Plasma Elements

Aerospace
This perspective consolidates recent advances that position plasma and metamaterials as a unified metasystem for next-generation space micropropulsion systems.
Igor Levchenko, Claudia Riccardi, Hector Eduardo Roman, Shuyan Xu, Michael Keidar, Uros Cvelbar, Oleg Baranov, Katia Alexander   +7 more
doaj   +1 more source

Non‐Uniform Space‐Time‐Coding Modulation for Low‐Complexity Diagnostics of Reconfigurable Intelligent Surfaces

Advanced Electronic Materials, EarlyView.
A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen, Lei Zhang, Yi Ning Zheng, Bing Bing Zhu, Marco Rossi, Giuseppe Castaldi, Shuo Liu, Vincenzo Galdi, Tie Jun Cui   +8 more
wiley   +1 more source

Dissipative loss in resonant metamaterials

, 2013
Metamaterials allow for the creation of electromagnetic media with properties that are not found in or, are much weaker in, natural materials. The authors discuss design methods to minimize dissipative loss and the use of gain to compensate dissipation ...
Soukoulis, C. M.,, Soukoulis, C. M., Koschny, T., Koschny, T.,, Tassin, Philippe,, Tassin, Philippe, Éric Lheurette   +6 more
core   +1 more source

ISOTROPY ANALYSIS OF METAMATERIALS

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2015
Metamaterials – artificial periodic structures with subwavelength feature sizes – can be characterized with macroscopic electromagnetic properties, like refractive index and wave impedance, just like homogeneous materials.
Arnold Kalvach, Zsolt Szabó
doaj   +1 more source

Studies of electromagnetically induced transparency in metamaterials

Optics Express, 2010
We have studied electromagnetically induced transparency (EIT) in metamaterials for various schemes corresponding to those in an atomic medium. We numerically calculate a symmetric dolmen scheme of metamaterials corresponding to a tripod model of EIT-based optical switching and illustrate plasmonic double dark resonances.
Hua, Xu, Yuehui, Lu, YoungPak, Lee, Byoung Seung, Ham   +3 more
openaire   +2 more sources

Updatable Closed‐Form Evaluation of Arbitrarily Complex Multiport Network Connections

Advanced Electronic Materials, EarlyView.
The inverse design of electrically large wave devices often uses reduced‐order multiport models with discrete optimization, requiring many evaluations of complex interconnections between subsystems that differ only in a few blocks. This paper introduces a closed‐form framework enabling efficient Woodbury low‐rank updates of related, previous ...
Hugo Prod'homme, Philipp del Hougne
wiley   +1 more source

AI-driven approaches in electromagnetic metamaterials design and application: a review

EPJ Applied Metamaterials
At present, the increasingly sophisticated functional demands for electromagnetic metamaterials pose significant challenges to conventional design approaches reliant on numerical simulation and empirical knowledge, particularly in terms of computational ...
Yu Haoyang, Liu Zixuan, Hou Rui, Zhang Zidong   +3 more
doaj   +1 more source

Free-standing THz electromagnetic metamaterials

Optics Express, 2008
Using micromanufactured S-shaped gold strings suspended in free space by means of window-frames, we experimentally demonstrate an electromagnetic meta-material (EM(3)) in which the metallic structures are no longer embedded in matrices or deposited on substrates such that the response is solely determined by the geometrical parameters and the ...
Moser, H.O., Kong, J.A., Jian, L.K., Chen, H.S., Liu, G., Bahou, M., Kalaiselvi, S.M.P., Maniam, S.M., Cheng, X.X., Wu, B.I., Gu, P.D., Chen, A., Heusslerl, S.P., Bin Mahmood, S., Wen, L.   +14 more
openaire   +2 more sources

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Control of the Electromagnetic Fields by Metamaterials

, 2018
Metamaterials are engineered composites. Much of the effort in the electrical engineering, material science, physics, and optics communities emphasized constructing efficient metamaterials and using them for potentially novel applications in antenna and ...
Trofimov, Aleksej, Gric, Tatjana
core   +1 more source