Articles with "cross polarization" as a keyword



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A dual-wideband bi-layered chiral metamaterial to develop cross-polarization conversion and asymmetric transmission functionalities for the linearly polarized electromagnetic waves

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Published in 2019 at "AEU - International Journal of Electronics and Communications"

DOI: 10.1016/j.aeue.2019.152916

Abstract: Abstract A novel modified bi-layered chiral metamaterial (CMM) with dual-wideband cross-polarization conversion and asymmetric transmission (AT) operations is introduced for the transmission of the linearly polarized electromagnetic (EM) waves. To this end, any unit cell… read more here.

Keywords: linearly polarized; transmission; cross polarization; polarization ... See more keywords
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Design of a local quasi-distributed tuning and matching circuit for dissolution DNP cross polarization.

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Published in 2019 at "Solid state nuclear magnetic resonance"

DOI: 10.1016/j.ssnmr.2019.04.006

Abstract: Dynamic nuclear polarization (DNP) build-up times at low temperature for low-gamma heteronuclei can be unfavorably long and can be accelerated by transfer of polarization from protons. The efficiency of the cross polarization (CP) depends on… read more here.

Keywords: cross polarization; dnp; polarization; circuit ... See more keywords
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Quantifying Micromolar Crystallinity in Pharmaceutical Materials Utilizing 19F Solid-State NMR.

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Published in 2022 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.2c02828

Abstract: Quantifying low-level components in solid-state analysis presents a significant challenge for most thermal, diffractometric, vibrational, and spectroscopic techniques. In pharmaceutical analysis, identifying and quantifying the physical form of the drug substance in solid dosages is… read more here.

Keywords: quantifying micromolar; state; solid state; cross polarization ... See more keywords
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Carbon-13 Cross-Polarization Magic-Angle Spinning Nuclear Magnetic Resonance for Measuring Proanthocyanidin Content and Procyanidin to Prodelphinidin Ratio in Sainfoin ( Onobrychis viciifolia) Tissues.

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Published in 2018 at "Journal of agricultural and food chemistry"

DOI: 10.1021/acs.jafc.8b01215

Abstract: A procedure based on 13C CPMAS NMR was developed to study procyanidins (PCs) and prodelphinidins (PDs) directly in milled sainfoin plant tissues. Blackcurrant and Tilia samples enabled reference spectra of purified proanthocyanidin (PA) fractions, crude… read more here.

Keywords: cross polarization; polarization magic; content; ratio ... See more keywords
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Solid-State 77Se NMR of Organoselenium Compounds through Cross Polarization Magic Angle Spinning (CPMAS) Method

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Published in 2017 at "Scientific Reports"

DOI: 10.1038/s41598-017-06892-8

Abstract: Characterization of selenium states by 77Se NMR is quite important to provide vital information for mechanism studies in organoselenium-catalyzed reactions. With the development of heterogeneous polymer-supported organoselenium catalysts, the solid state 77Se NMR comes to… read more here.

Keywords: solid state; 77se nmr; cross polarization; state 77se ... See more keywords
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Measurement of Nanowire Optical Modes Using Cross-Polarization Microscopy

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Published in 2017 at "Scientific Reports"

DOI: 10.1038/s41598-017-18193-1

Abstract: A method to detect optical modes from vertical InGaAs nanowires (NWs) using cross-polarization microscopy is presented. Light scattered from the optical modes in the NWs is detected by filtering out the polarized direct reflection with… read more here.

Keywords: microscopy; cross polarization; using cross; polarization microscopy ... See more keywords
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Realizing of cross-polarization conversion for linearly polarized waves in multiband by orthotropic metasurface

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Published in 2021 at "Journal of Electromagnetic Waves and Applications"

DOI: 10.1080/09205071.2021.1958380

Abstract: A multiband reflective linear-polarization (LP) converter based on an anisotropic metasurface is proposed. The unit cell of the metasurface is composed of a hollow oval sheet and a rectangle patch.... read more here.

Keywords: conversion linearly; cross polarization; polarization; polarization conversion ... See more keywords
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Design of tunable silicon metasurfaces with cross-polarization transmittance over 80%

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Published in 2018 at "Physica Scripta"

DOI: 10.1088/1402-4896/aacd8b

Abstract: We designed highly efficient, mechanically tunable metasurfaces based on an array of crystalline silicon nanoposts on stretchable substrates. The metasurface can continuously tune the wavefront of light by changing the lattice constant of the silicon… read more here.

Keywords: polarization transmittance; cross polarization; design tunable; silicon ... See more keywords
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Cross-polarization ratio analysis of digital speckle patterns applied to teeth demineralization diagnosis

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Published in 2022 at "Laser Physics"

DOI: 10.1088/1555-6611/ac5cc9

Abstract: We propose using the cross-polarization ratio (CPR) of the digital speckle pattern as a parameter to detect enamel erosion. We applied such analysis to successfully detect enamel erosion caused by teeth demineralization. The speckle patterns… read more here.

Keywords: polarization ratio; speckle patterns; speckle; cross polarization ... See more keywords
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Design of 1-Bit Coding Engineered Reflectors for EM-Wave Shaping and RCS Modifications

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Published in 2018 at "IEEE Access"

DOI: 10.1109/access.2018.2883721

Abstract: In this paper, the engineered reflectors are designed and characterized for cross polarization rotation, RCS modification, and EM-wave shaping at W-band. The multiple plasmon resonances, cross-polarization rotation, reflection phase cancellation, and coding sequence principles are… read more here.

Keywords: engineered reflectors; cross polarization; wave shaping; unit cell ... See more keywords
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Low Cross-Polarization, High-Isolation Microstrip Patch Antenna Array for Multi-Mission Applications

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Published in 2019 at "IEEE Access"

DOI: 10.1109/access.2018.2889599

Abstract: The design and development of a high-performance, dual-polarization, hybrid aperture-coupled microstrip patch antenna are presented. In the presented design, the horizontal and vertical polarizations are excited using the aperture coupling method. The isolation level of… read more here.

Keywords: cross polarization; inline formula; polarization; microstrip patch ... See more keywords