Results 1 to 10 of about 119,525 (367)

Perfect metamaterial absorber. [PDF]

open access: yesPhysical Review Letters, 2008
We present the design for an absorbing metamaterial (MM) with near unity absorbance A(omega). Our structure consists of two MM resonators that couple separately to electric and magnetic fields so as to absorb all incident radiation within a single unit ...
N. Landy   +4 more
semanticscholar   +6 more sources

Design of a Small Array Antenna with an Extended Cavity Structure for Wireless Power Transmission [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2020
This paper proposes a design of a small array antenna with an extended cavity structure for wireless power transmission. The proposed array element consists of a square radiating loop, which is designed to resonate at 5.8 GHz, and an extended cavity ...
Jun Hur, Hosung Choo
doaj   +1 more source

Ultra-broadband metamaterial absorbers from long to very long infrared regime

open access: yesLight: Science & Applications, 2021
Broadband metamaterials absorbers with high absorption, ultrathin thickness and easy configurations are in great demand for many potential applications. In this paper, we first analyse the coupling resonances in a Ti/Ge/Ti three-layer absorber, which can
Yu Zhou   +6 more
semanticscholar   +1 more source

Research progress and development suggestions on aeronautical electromagnetic metamaterial

open access: yesJournal of Aeronautical Materials, 2023
Electromagnetic metamaterial is an artificial composite composed of periodic subwavelength microstructure,which has a strong conduction regulation or absorption effect on electromagnetic wave,and it has been widely studied in the field of stealth design ...
JING Zhi, ZHANG Jian
doaj   +1 more source

A Dual-Polarized Reconfigurable Reflectarray Antenna Based on a Symmetrically Rotated Sub-Array

open access: yesIEEE Access, 2023
This paper proposes a novel method for designing a dual-polarized reconfigurable reflectarray antenna (RRA) based on a symmetrically rotated sub-array operating in a single-band.
Sun-Gyu Lee, Jeong-Hae Lee
doaj   +1 more source

Role of supersaturated Al-C phases in mechanical properties of Al/fullerene composites

open access: yesScientific Reports, 2021
We investigated the reinforcing effect of supersaturated Al-C phases on the mechanical properties of Al/C60 composites produced via powder metallurgy followed by thermal treatment.
Seungjin Nam   +5 more
doaj   +1 more source

Metamaterial-Inspired Antennas: A Review of the State of the Art and Future Design Challenges

open access: yesIEEE Access, 2021
Metamaterials are artificial structures with the ability of exhibiting unusual and exotic electromagnetic properties such as the realisation of negative permittivity and permeability.
Christos Milias   +7 more
semanticscholar   +1 more source

Advanced Processing of 3D Computational Microwave Polarimetry Using a Near-Field Frequency-Diverse Antenna

open access: yesIEEE Access, 2020
Polarimetry is typically restricted to far-field characterization of a target using beam-like waves, which results in a 2 x 2 scattering matrix representation under two orthogonal in-plane polarization bases.
Rixi Peng   +3 more
doaj   +1 more source

All-metal terahertz metamaterial biosensor for protein detection

open access: yesNanoscale Research Letters, 2021
In this paper, a terahertz (THz) biosensor based on all-metal metamaterial is theoretically investigated and experimentally verified. This THz metamaterial biosensor uses stainless steel materials that are manufactured via laser-drilling technology.
Gangqi Wang   +5 more
semanticscholar   +1 more source

Structured graphene metamaterial selective absorbers for high efficiency and omnidirectional solar thermal energy conversion

open access: yesNature Communications, 2020
An ideal solar-thermal absorber requires efficient selective absorption with a tunable bandwidth, excellent thermal conductivity and stability, and a simple structure for effective solar thermal energy conversion.
Keng-Te Lin   +3 more
semanticscholar   +1 more source

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