Articles with "wave vector" as a keyword



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P-wave vector magnitude predicts the left atrial low-voltage area in patients with paroxysmal atrial fibrillation.

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Published in 2019 at "Journal of electrocardiology"

DOI: 10.1016/j.jelectrocard.2019.12.015

Abstract: BACKGROUND P-wave amplitude (PWA) parameters can be the surrogate measures of the left atrial low-voltage areas (LVAs). METHODS We measured PWAs using an automated system in 50 patients with paroxysmal atrial fibrillation (AF). We examined… read more here.

Keywords: lead pwa; left atrial; vector magnitude; wave vector ... See more keywords
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Spatial damping of extraordinary-Bernstein wave

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Published in 2019 at "Physics of Plasmas"

DOI: 10.1063/1.5089748

Abstract: The spatial propagation and attenuation of an extraordinary (X) mode wave are investigated by numerically solving the dispersion relation for Maxwellian velocity distribution. The solutions are found by taking the wave vector to be complex… read more here.

Keywords: dispersion relation; wave; wave vector; mode wave ... See more keywords
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Cooperative Ru(4d)−Ho(4f) magnetic ordering and phase coexistence in the 6H perovskite multiferroic Ba3HoRu2O9

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Published in 2020 at "Physical Review B"

DOI: 10.1103/physrevb.102.020409

Abstract: We report cooperative magnetic orderings in a 6H-perovskite multiferroic system, Ba3HoRu2O9, via comprehensive neutron powder diffraction measurements. This system undergoes long-range antiferromagnetic ordering at TN1 ~ 50 K with a propagation wave vector of K1… read more here.

Keywords: wave vector; magnetic ordering; cooperative magnetic; phase ... See more keywords
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Spin-wave dynamics controlled by tunable ac magnonic crystal

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Published in 2023 at "Physical Review B"

DOI: 10.1103/physrevb.107.l180404

Abstract: The magnonic crystal, which has a spatial modulation wave vector $q$, couples the spin wave with wave vector $k$ to the one with wave vector $k-q$. For a conventional magnonic crystal with direct current (dc)… read more here.

Keywords: crystal; wave vector; magnonic crystal; omega omega ... See more keywords
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Wave-Vector Dependence of the Dynamics in Supercooled Metallic Liquids.

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Published in 2020 at "Physical review letters"

DOI: 10.1103/physrevlett.125.055701

Abstract: We present a detailed investigation of the wave-vector dependence of collective atomic motion in Au_{49}Cu_{26.9}Si_{16.3}Ag_{5.5}Pd_{2.3} and Pd_{42.5}Cu_{27}Ni_{9.5}P_{21} supercooled liquids close to the glass transition temperature. Using x-ray photon correlation spectroscopy in a previously uncovered spatial… read more here.

Keywords: dependence dynamics; dynamics supercooled; wave vector; vector dependence ... See more keywords
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Criterion to determine the wave vector range of heterodyne near-field exposure time-dependent spectrum.

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Published in 2022 at "Applied optics"

DOI: 10.1364/ao.452850

Abstract: Recently, image methods for measuring dynamics of nanoparticles have garnered attention; however, the low-speed frame rate of normal image sensors limits their application. Applying a low-speed detector can extract fast dynamic information by the method… read more here.

Keywords: criterion; wave vector; exposure time; vector range ... See more keywords
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Simple algorithm for partial wave expansion of plasmonic and evanescent fields.

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Published in 2017 at "Optics express"

DOI: 10.1364/oe.25.004201

Abstract: Based on an expansion formula for unit dyadic in terms of the vector spherical wave functions, we derive explicit partial wave coefficients for a complex wave vector field that is characterized by a single wave… read more here.

Keywords: expansion; field; wave; wave vector ... See more keywords
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Quasi-omnidirectional retroreflective metagrating for TE-polarized waves based on wave-vector reversions.

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Published in 2022 at "Optics express"

DOI: 10.1364/oe.452180

Abstract: Structuring elements of gratings brings more freedom in manipulating diffraction waves, e.g., retroreflection using diffraction orders other than the 0th order. Most retroreflective metagratings (RMs) can achieve retroreflection only under one particular direction, limiting their… read more here.

Keywords: wave vector; retroreflection; based wave; polarized waves ... See more keywords
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Flat distorting mirrors via metasurfaces.

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Published in 2021 at "Optics letters"

DOI: 10.1364/ol.427994

Abstract: Traditional distorting mirrors utilize curved surfaces to produce distorted virtual images, i.e., illusions. Here we propose the concept of flat distorting mirrors (FDMs) based on gradient metasurfaces and investigate the shape, orientation, and position of… read more here.

Keywords: flat distorting; distorting mirrors; virtual images; wave vector ... See more keywords