Results 11 to 20 of about 5,269,093 (368)

A Broadband 1-Bit Single-Layer Reconfigurable Reflectarray Unit Cell Based on PIN Diode Model

open access: yesIEEE Access, 2023
Microstrip reconfigurable reflectarray antennas (RRAs) have great potential for advanced systems including satellite communications and the 6th generation (6G) wireless mobile communication networks.
Hoang Dang Cuong   +4 more
doaj   +1 more source

Evaluation of Adding Natural Gum to Pectin Extracted from Ecuadorian Citrus Peels as an Eco-Friendly Corrosion Inhibitor for Carbon Steel

open access: yesMolecules, 2022
The production and use of eco-friendly corrosion inhibitors allows valuable compounds contained in plant waste to be identified and repurposed while reducing the use of polluting synthetic substances. Pectin extracted from Tahiti limes (Citrus latifolia)
Jorge Núñez-Morales   +3 more
doaj   +1 more source

Design and Development of Biodegradable 3D Printed RDRA for Polarization Reconfigurability [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2023
In this article, a 3D printed rectangular dielectric resonator antenna which is capable of polarization reconfiguration has been designed. Dielectric resonator is composed of environment friendly and biodegradable material, which is Polylactic Acid.
Maganti Apparao, Godi Karunakar
doaj   +1 more source

Linear Polarization Demosaicking for Monochrome and Colour Polarization Focal Plane Arrays

open access: yesComputer graphics forum (Print), 2021
Division‐of‐focal‐plane (DoFP) polarization image sensors allow for snapshot imaging of linear polarization effects with inexpensive and straightforward setups.
Simeng Qiu   +3 more
semanticscholar   +1 more source

Narrow Linewidth 49 W All Fiber Linearly Polarized Picosecond Laser Operating at 1016 nm

open access: yesIEEE Photonics Journal, 2022
An all fiber linearly polarized narrow linewidth pulsed fiber laser operating at 1016 nm is demonstrated in a master oscillator power amplification (MOPA) configuration.
Chao Zhang   +3 more
doaj   +1 more source

Linear polarization in the nucleus of M87 at 7 mm and 1.3 cm [PDF]

open access: yesAstronomy & Astrophysics, 2020
We report on high angular resolution polarimetric observations of the nearby radio galaxy M87 using the Very Long Baseline Array at 24 GHz (λ = 1.3 cm) and 43 GHz (λ = 7 mm) in 2017–2018.
E. Kravchenko   +6 more
semanticscholar   +1 more source

Pixelated metasurfaces for linear-polarization conversion and absorption

open access: yesJournal Electromagnetic Waves and Applications, 2021
Terahertz metasurfaces with pixelated meta-atoms were designed for linear-polarization conversion and absorption. The differences between the two functionalities emerged from the number and arrangement of metal-dielectric combos patching some but not ...
Rajan Agrahari   +3 more
semanticscholar   +1 more source

Corrosion Experimental Research on Local Damage of Epoxy-Coated Steel Bars in Concrete Under Marine Environment

open access: yesFrontiers in Materials, 2022
Epoxy coating has been proven to protect steel bars from corrosion. However, the damage of epoxy coating is inevitable, and this may lead to more serious corrosion of steel bar.
Hongfei Cao   +10 more
doaj   +1 more source

Liquid crystal integrated metamaterial for multi-band terahertz linear polarization conversion

open access: yesChinese Optics Letters (COL), 2021
We experimentally investigate the linear polarization conversion for terahertz (THz) waves in liquid crystal (LC) integrated metamaterials, which consist of an LC layer sandwiched by two orthogonally arranged sub-wavelength metal gratings.
Shitong Xu   +4 more
semanticscholar   +1 more source

Characterizing the Accuracy of ALMA Linear-polarization Mosaics [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 2020
We characterize the accuracy of linear-polarization mosaics made using the Atacama Large Millimeter/submillimeter Array (ALMA). First, we observed the bright, highly linearly polarized blazar 3C 279 at Bands 3, 5, 6, and 7 (3 mm, 1.6 mm, 1.3 mm, and 0.87
C. Hull   +11 more
semanticscholar   +1 more source

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