Results 31 to 40 of about 175,630 (355)

Investigation of frequency-dependent permittivity tunability of P(VDF-TrFE) metal-ferroelectric-metal capacitor

open access: yesResults in Physics, 2019
We report on the tunability of the frequency-dependent permittivity of a metal-ferroelectric-metal (MFM) capacitor fabricated with P(VDF-TrFE), an organic ferroelectric material.
S.-W. Han   +4 more
doaj   +1 more source

Development of diverse coding metamaterial structure for radar cross section reduction applications

open access: yesScientific Reports, 2022
Despite their widespread use for performing advanced electromagnetic properties, metamaterial suffers from several restrictions in this technological era.
Tayaallen Ramachandran   +4 more
doaj   +1 more source

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

open access: yesMaterials & 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
doaj   +1 more source

Topological Insulator Metamaterials

open access: yesChemical Reviews, 2023
Confinement of electromagnetic fields at the subwavelength scale via metamaterial paradigms is an established method to engineer light-matter interaction in most common material systems, from insulators to semiconductors, from metals to superconductors.
Harish N. S. Krishnamoorthy   +3 more
openaire   +5 more sources

Tunable Broadband Transparency of Macroscopic Quantum Superconducting Metamaterials [PDF]

open access: yes, 2015
Narrow-band invisibility in an otherwise opaque medium has been achieved by electromagnetically induced transparency (EIT) in atomic systems. The quantum EIT behaviour can be classically mimicked by specially engineered metamaterials via carefully ...
Anlage, Steven. M.   +3 more
core   +3 more sources

Quantum master equation for coupling mechanism of metamaterial

open access: yesResults in Physics, 2022
In this paper, we present a full quantum description for coupling mechanism of the metamaterial. We start the derivation from quantum master equation to fit the spectrum of THz metamaterial. Therefore we can employ the quantum master equation to describe
Wei Huang   +6 more
doaj   +1 more source

A Comprehensive Survey of “Metamaterial Transmission-Line Based Antennas: Design, Challenges, and Applications”

open access: yesIEEE Access, 2020
In this review paper, a comprehensive study on the concept, theory, and applications of composite right/left-handed transmission lines (CRLH-TLs) by considering their use in antenna system designs have been provided.
M. Alibakhshikenari   +11 more
semanticscholar   +1 more source

Electrically tunable harmonics in time-modulated metasurfaces for wavefront engineering

open access: yesNew Journal of Physics, 2018
Modulation of metasurfaces in time gives rise to several exotic space–time scattering phenomena by breaking the reciprocity constraint and generation of higher-order frequency harmonics. We introduce a new design paradigm for time-modulated metasurfaces,
Mohammad Mahdi Salary   +2 more
doaj   +1 more source

Automatic design of mechanical metamaterial actuators [PDF]

open access: yesNature Communications, 2020
Mechanical metamaterial actuators achieve pre-determined input–output operations exploiting architectural features encoded within a single 3D printed element, thus removing the need for assembling different structural components.
Silvia Bonfanti   +4 more
semanticscholar   +1 more source

Transformation-Invariant Metamaterials [PDF]

open access: yesPhysical Review Letters, 2019
The fundamental semiconductor concept of doping has recently been transplanted to photonics in the platform of epsilon-near-zero (ENZ) media. By doping nonmagnetic impurities, ENZ media can exhibit almost arbitrary magnetism. However, this original photonic doping approach results only in isotropic media and thus cannot achieve impedance matching for ...
Youming Zhang   +3 more
openaire   +3 more sources

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