Results 31 to 40 of about 207,029 (307)

Is the cosmic microwave background circularly polarized? [PDF]

open access: yesPhysics Letters B, 2003
The primordial anisotropies of the cosmic microwave background (CMB) are linearly polarized via Compton-scattering. The Faraday conversion process during the propagation of polarized CMB photons through regions of the large-scale structure containing magnetized relativistic plasma, such as galaxy clusters, will lead to a circularly polarized ...
Cooray, Asantha   +2 more
openaire   +2 more sources

Circularly polarized patch antenna with frequency reconfiguration

open access: yes, 2015
A novel circularly polarized (CP) patch antenna with frequency reconfiguration is presented. The antenna consists of a rectangular patch etched with a rectangular-ring slot. Four pairs of varactor diodes are symmetrically placed along the slot.
Ge, Lei, Gu, Hui, Wang, Jianpeng
core   +1 more source

Circularly polarized reflection spectra of a photonic beetle and preparation of tunable circularly polarized light reflecting device consisting of conductive polymer/beetle exoskeleton

open access: yesNext Materials
The surface structure of the exoskeleton of Anomala albopilosa as a photonic insect is visually examined, followed by the measurement of the circularly polarized laser reflection spectrum to assess the reflection of circularly polarized light from the ...
Hiromasa Goto   +2 more
doaj   +1 more source

Polarization multiplexing and bifocal optical vortex metalens

open access: yesResults in Physics, 2020
In this article, we demonstrate several optical vortex metalens (OVMs) based on the Pancharatnam–Berry (PB) geometric phase concept utilizing silicon nanobricks.
Wei Wang   +4 more
doaj   +1 more source

Broadband Circularly Polarized Filtering Antennas [PDF]

open access: yesIEEE Access, 2018
This paper consists of two parts. The first part presents a review of the recent development in broadband circularly polarized filtering antennas. The second part presents a novel design of broadband integrated filtering antenna based on eighth-mode SIW (EMSIW) resonators for rectenna applications. This work has three main novel contributions.
Yazhou Dong   +10 more
openaire   +2 more sources

Recyclable soft photonic crystal film with overall improved circularly polarized luminescence

open access: yesNature Communications, 2023
Existing circularly polarized luminescence materials can hardly satisfy the requirements of both large luminescence dissymmetry factor and high luminescent quantum yield, which hinders their practical applications.
Yonghong Shi   +5 more
doaj   +1 more source

Experimental characterization of the Xe 5p photoionization by angle- and spin-resolved photoelectron spectroscopy [PDF]

open access: yes, 1986
Heckenkamp C, Schäfers F, Schönhense G, Heinzmann U. Experimental characterization of the Xe 5p photoionization by angle- and spin-resolved photoelectron spectroscopy. Zeitschrift für Physik D: Atoms, Molecules and Clusters.
U. Heinzmann   +7 more
core   +1 more source

Circularly Polarized Luminescence in a Möbius Helicene Carbon Nanohoop. [PDF]

open access: yes, 2022
We present the first helicene carbon nanoohop that integrates a [6]helicene into [7]cycloparaphenylene. The [6]helicene endows the helicene carbon nanohoop with chiroptical properties and configurational stability typical for higher helicenes, while the ...
Mora‐Fuentes, Juan P.   +19 more
core   +2 more sources

SANTANA- Smart Antenna Terminal Design [PDF]

open access: yes, 2005
This project is embedded in SANTANA (Smart Antenna Terminal) project. The project goal is to design a Ka-band circularly polarized antenna radiator for the receiver SANTANA system.
Liu, Ying, Ying, Liu
core  

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

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