Results 11 to 20 of about 42,935 (288)
A mathematically defined 3D auxetic metamaterial with tunable mechanical and conduction properties
Materials & 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.
Xiaoyang Zheng +2 more
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Aperiodic-metamaterial-based absorber
APL Materials, 2017 The periodic-metamaterial-based perfect absorber has been studied broadly. Conversely, if the unit cell in the metamaterial-based absorber is arranged aperiodically (aperiodic-metamaterial-based absorber), how does it perform?
Quanlong Yang +9 more
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Design of a Small Array Antenna with an Extended Cavity Structure for Wireless Power Transmission [PDF]
Journal 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
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Coding metamaterials, digital metamaterials and programmable metamaterials [PDF]
Light: Science & Applications, 2014 Smart materials offering great freedom in manipulating electromagnetic radiation have been developed. This exciting new concept was realized by Tie Jun Cui and co-workers at the Southeast University, China, who developed digital metamaterials consisting of two kinds of unit cells whose different phase responses allow them to act as ‘0’ and ‘1’ bits ...
Tie Jun Cui +4 more
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Modular Metamaterials for Adaptable MRI Signal Control: Combining Dipole Array With a New Hexagon-Based Artificial Dielectrics. [PDF]
Adv Sci (Weinh)A flexible, hexagonally packed artificial dielectric providing a wide range of effective permittivities (εr ≈ 30–1400) without lumped elements was developed for clinical and ultra‐high‐field MRI. Combined with modular passive‐dipole arrays, the system enables adaptable RF field shaping through electric‐ and magnetic‐dipole tuning.
Maurya SK, Goldberg I, Schmidt R.
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Research progress and development suggestions on aeronautical electromagnetic metamaterial
Journal 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
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Nature Materials, 2014 Balancing the complexity and the simplicity has played an important role in the development of many fields in science and engineering. As Albert Einstein was once quoted to say: 'Everything must be made as simple as possible, but not one bit simpler'. The simplicity of an idea brings versatility of that idea into a broader domain, while its complexity ...
Della Giovampaola, Cristian +1 more
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Optics Letters, 2022 We study the dispersion of electromagnetic waves in a spatially dispersive metamaterial with Lorentz-like dependence of principal permittivity tensor components on the respective components of the wave vector performing the analysis of isofrequency contours. The considered permittivity tensor describes a triple non-connected wire medium.
D. Sakhno, E. Koreshin, P. Belov
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Long pulse delays in thin metamaterial slabs [PDF]
, 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
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Role of supersaturated Al-C phases in mechanical properties of Al/fullerene composites
Scientific 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
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