Results 91 to 100 of about 1,189,790 (336)

Planar microstrip YAGI antenna array [PDF]

open access: yes, 1993
A directional microstrip antenna includes a driven patch surrounded by an isolated reflector and one or more coplanar directors, all separated from a ground plane on the order of 0.1 wavelength or less to provide end fire beam directivity without ...
Huang, John
core   +1 more source

Coexisting Rashba/Dresselhaus Spin Splitting in Solution‐Processed Bournonite Films Using Circular Photogalvanic Effect

open access: yesAdvanced Functional Materials, EarlyView.
Circular photogalvanic effect measurements and first‐principles calculations reveal spin‐splitting states in solution‐processed bournonite films (CuPbSbS3) due to structural and bulk inversion asymmetry. The results provide experimental confirmation of coexisting Rashba and Dresselhaus spin‐splitting states in this non‐centrosymmetric chalcogenide ...
Aeron McConnell   +5 more
wiley   +1 more source

Design of circularly polarized phosphorescence materials guided by transfer learning

open access: yesNature Communications
It is highly desirable that artificial circularly polarized phosphorescent materials with high luminescence asymmetry factor (g lum), narrowband emission and tunable chiral phosphorescent performance can be constructed.
Xu Liu   +11 more
doaj   +1 more source

Image Restoration of Highly Reflective Polarization Targets in Turbid Media Based on Circularly Polarized Light

open access: yesIEEE Access
The traditional underwater active polarization imaging system primarily employs linearly polarized light as its illumination source. However, in cases where the target exhibits high light polarization upon reflection in a turbid medium, the difference ...
Cheng Qian, Wang Yinmin, Liu Yao
doaj   +1 more source

The Circular Polarization Diversity Antennas Achieved by a Fractal Defected Ground Structure

open access: yesIEEE Access, 2019
This paper proposes the circularly polarized (CP) antennas with a restored radiation pattern for the polarization diversity applications. The proposed CP antennas have dual polarizations, the left-handed circularly polarized (LHCP) antenna is designed ...
Kun Wei, Bocheng Zhu, Mingliang Tao
doaj   +1 more source

A Multi-Band U-Strip and SRR Loaded Slot Antenna with Circular Polarization Characteristics

open access: yesAdvanced Electromagnetics, 2020
A compact multiband circularly polarized slot antenna is proposed here. An F-shaped microstrip feedline is used to excite the square slot antenna loaded with a U-shaped strip and a split ring resonator (SRR) to generate three circularly polarized bands ...
P. M. Paul, K. Kandasamy, M. S. Sharawi
doaj   +1 more source

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

open access: yesAdvanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park   +3 more
wiley   +1 more source

Parabolic reflector horn feed with spillover correction Patent [PDF]

open access: yes, 1965
Device for improving efficiency of parabolic reflector horn for linearly or circularly polarized ...
Nixon, D. L., Schuster, D. M.
core   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

open access: yesAdvanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado   +6 more
wiley   +1 more source

Experimental verification of SAM-OAM coupling of tightly focused elliptically polarized light

open access: yesScientific Reports
Polarized beams, such as circularly polarized beams and linearly polarized beams, have been found to be able to automatically move particles under the tight focusing condition.
Yu Liu, Yixuan Wu, Shaohua Tao
doaj   +1 more source

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