Results 1 to 10 of about 40,326 (144)

A mathematically defined 3D auxetic metamaterial with tunable mechanical and conduction properties

open access: yesMaterials and Design, 2021
An auxetic metamaterial is a type of mechanical metamaterial that has a negative Poisson's ratio. Most auxetic metamaterials are truss-based or originate from Boolean operations of simple geometries.
Ikumu Watanabe   +2 more
exaly   +4 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

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

Effect of Thermal and Mechanical Deformation of Metamaterial FDM Components [PDF]

open access: yes, 2009
At Lancaster University, research is currently investigating the use of rapid manufacturing (RM) to realise metamaterials, although key to the success of this project is the development of an understanding of how coated RM parts deform under thermal and ...
Tan, Yap   +3 more
core   +4 more sources

Metamaterial-based graphene thermal emitter [PDF]

open access: yes, 2017
A thermal emitter composed of a frequency-selective surface metamaterial layer and a hexagonal boron nitride-encapsulated graphene filament is demonstrated.
I Luxmoore (21873875)   +3 more
core   +6 more sources

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

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

Long pulse delays in thin metamaterial slabs [PDF]

open access: yes, 2007
We provide experimental evidence that an electromagnetic pulse can be significantly delayed with minimum loss and distortion, while propagating through a new type of planar meta-materials that supports modes weakly coupled to free-space radiation ("dark ...
Fedotov, Vassili A.   +3 more
core   +2 more sources

Development and prospects of metamaterial in wireless power transfer

open access: yesIET Power Electronics, 2021
As a unique group of advanced artificial materials, metamaterials have found many interesting applications in various devices due to the ability to control electromagnetic fields.
Xiutao Huang   +5 more
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

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