Articles with "spatial dispersion" as a keyword



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The non-uniform spatial dispersion of graphene oxide: A step forward to understand the inconsistent properties of cement composites

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Published in 2020 at "Construction and Building Materials"

DOI: 10.1016/j.conbuildmat.2020.120729

Abstract: Abstract Graphene oxide (GO) has been extensively employed to improve the mechanical strength, hydration and durability of cement composites. Recently, an interesting phenomenon can be found that the variation of cement performances is inconsistent with… read more here.

Keywords: graphene oxide; properties cement; cement composites; inconsistent properties ... See more keywords
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Modelling spatial dispersion of contaminants from shipping lanes in the Baltic Sea.

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Published in 2021 at "Marine pollution bulletin"

DOI: 10.1016/j.marpolbul.2021.112985

Abstract: Major sources of pollution from shipping to marine environments are antifouling paint residues and discharges of bilge, black, grey and ballast water and scrubber discharge water. The dispersion of copper, zinc, naphthalene, pyrene, and dibromochloromethane… read more here.

Keywords: sea; spatial dispersion; baltic sea; modelling spatial ... See more keywords

Spatial dispersion of the high-frequency conductivity of two-dimensional electron gas subjected to a high electric field: Collisionless case

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Published in 2018 at "Applied Physics Letters"

DOI: 10.1063/1.5041322

Abstract: We present the analysis of high-frequency (dynamic) conductivity with the spatial dispersion, $\sigma (\omega, {\bf q})$, of two-dimensional electron gas subjected to a high electric field. We found that at finite wavevector, ${\bf q}$, and… read more here.

Keywords: high frequency; frequency; spatial dispersion; conductivity ... See more keywords
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An antiferromagnet as a tunable single-phase elastic hyperbolic medium with spatial dispersion

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Published in 2020 at "Low Temperature Physics"

DOI: 10.1063/10.0001549

Abstract: For a plane and quasi-plane SH-type bulk wave incident from the outside onto a system of equidistant antiferromagnetic dielectric layers, the inclusion of the spatial dispersion in the antiferromagnet as a hyperbolic magnetoacoustic medium induces… read more here.

Keywords: medium; tunable single; antiferromagnet tunable; spatial dispersion ... See more keywords

Exploring spatial dispersion in helical wired media: an effective field theory approach

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Published in 2024 at "Journal of Physics A: Mathematical and Theoretical"

DOI: 10.1088/1751-8121/adb6dd

Abstract: The study investigates electromagnetic wave propagation in helical media exhibiting spatial dispersion. A general permittivity tensor with helical symmetry is derived, and its specific form for conducting spiral wires with pitch 2π/|q| and chirality sgn(q)… read more here.

Keywords: dispersion helical; band; spatial dispersion; exploring spatial ... See more keywords

Optical activity and transport in twisted bilayer graphene: Spatial dispersion effects

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Published in 2023 at "Physical Review B"

DOI: 10.1103/physrevb.107.195141

Abstract: This study investigates optical activity and quantum transport in twisted bilayer graphene (TBG) systems, demonstrating that the former results from spatial dispersion effects. The transfer matrix method is used to solve the propagation of electromagnetic… read more here.

Keywords: transport twisted; optical activity; bilayer graphene; conductivity ... See more keywords

Extreme Spatial Dispersion in Nonlocally Resonant Elastic Metamaterials

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Published in 2022 at "Physical Review Letters"

DOI: 10.1103/physrevlett.130.207201

Abstract: To date, the vast majority of architected materials have leveraged two physical principles to control wave behavior, namely Bragg interference and local resonances. Here, we describe a third path: structures that accommodate a finite number… read more here.

Keywords: dispersion nonlocally; extreme spatial; resonant elastic; dispersion ... See more keywords

Role of spatial dispersion of repolarization in reentry around a functional core versus reentry around a fixed anatomical core

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Published in 2019 at "Annals of Noninvasive Electrocardiology"

DOI: 10.1111/anec.12647

Abstract: Successful initiation of spiral wave reentry in the neonatal rat ventricular myocyte (NRVM) monolayer implicitly assumes the presence of spatial dispersion of repolarization (DR), which is difficult to quantify. We recently introduced a NRVM monolayer… read more here.

Keywords: reentry; spatial dispersion; reentry around; dispersion repolarization ... See more keywords

Customizing longitudinal electric field profiles using spatial dispersion in dielectric wire arrays.

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Published in 2018 at "Optics express"

DOI: 10.1364/oe.26.002478

Abstract: We show how spatial dispersion can be used as a mechanism to customize the longitudinal profiles of electric fields inside modulated wire media, using a fast and remarkably accurate 1D inhomogeneous model. This customization gives… read more here.

Keywords: field; spatial dispersion; wire; field profiles ... See more keywords

Influence of spatial dispersion on phase and lateral shifts near the reflection dip in the Kretschmann-Raether structure.

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Published in 2022 at "Optics express"

DOI: 10.1364/oe.453472

Abstract: The influence of spatial dispersion of metals on phase and Goos-Hänchen (GH) shifts near the reflection dip has been investigated in the Kretschmann-Raether configuration, within the hydrodynamic model framework. We have derived an analytical expression… read more here.

Keywords: spatial dispersion; shifts near; near reflection; reflection ... See more keywords

Spatial dispersion control with Laue-geometry Photonic crystals

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Published in 2025 at "Optics Express"

DOI: 10.1364/oe.575375

Abstract: We propose and experimentally demonstrate an integrated approach to suppress Kerr self-focusing by engineering the spatial dispersion of a medium using photonic crystals of Laue geometry (Laue-type PhC). The PhC, featuring longitudinally chirped and constant-period… read more here.

Keywords: photonic crystals; spatial dispersion; dispersion control; geometry ... See more keywords