Results 21 to 30 of about 5,007 (212)

Circular Antenna Array With Beam Direction and Polarization Control

IEEE Access
In this paper, a circular antenna array is presented for indoor communication. The antenna array consists of 8 dual-polarization antenna elements. At first, the circular antenna array is fed identically, an azimuthal omnidirectional pattern is obtained ...
Pei-Yu Li, Xin-Ran Jin, Guo-Wen Ding, Xin-Yao Luo, Shen-Yun Wang   +4 more
doaj   +1 more source

On possibility of time reversal symmetry violation in neutrino elastic scattering on polarized electron target

European Physical Journal C: Particles and Fields, 2018
In this paper we indicate a possibility of utilizing the elastic scattering of Dirac low-energy ($$\sim 1$$ ∼1 MeV) electron neutrinos ($$\nu _e$$ νe s) on a polarized electron target (PET) in testing the time reversal symmetry violation (TRSV).
W. Sobków, A. Błaut
doaj   +1 more source

Probing the top Yukawa coupling at the LHC via associated production of single top and Higgs

Journal of High Energy Physics, 2020
We study Higgs boson production associated with single top or anti-top via t-channel weak boson exchange at the LHC. The process is an ideal probe of the top quark Yukawa coupling, because we can measure the relative phase of htt and hWW couplings ...
Vernon Barger, Kaoru Hagiwara, Ya-Juan Zheng   +2 more
doaj   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Oblique light incidence method to study topological defects in nematic layers with conical boundary conditions

Scientific Reports, 2021
A polarization microscopy method to investigate the orientational structures and boojums formed in the chiral and achiral nematic layers under conical (tilted) boundary conditions has been developed.
Mikhail N. Krakhalev
doaj   +1 more source

Plasmonic Enhancement of Fluorescence and Protein Dynamics in Living Mammalian Cells

Advanced Materials, EarlyView.
This study demonstrates plasmonic enhancement of the function of fluorescent voltage sensing proteins (genetically encoded voltage indicators, (GEVIs), QuasAr6) in live mammalian cells. Coupling to plasmonic nanoparticles does not just increase fluorescence, but influences the protein photocycle, creating a hybrid sensor with its response speed to ...
Marco Locarno, Qiangrui Dong, Marco Post, Xin Meng, Cristiano Glessi, Nynke Marije Hettema, Nidas Brandsma, Sebbe Blokhuizen, Alejandro Castañeda Garcia, Srividya Ganapathy, Thieme Schmidt, Lars van Roemburg, Bing Xu, Chun‐Ting Cho, Liedewij Laan, Miao‐Ping Chien, Daan Brinks   +16 more
wiley   +1 more source

Local spin polarization in high energy heavy ion collisions

Physical Review Research, 2019
We reexamine the azimuthal angle dependence of the local spin polarization of hyperons in heavy ion collisions at 200 GeV in the framework of the (3+1)-dimensional viscous hydrodynamic model CLVisc.
Hong-Zhong Wu, Long-Gang Pang, Xu-Guang Huang, Qun Wang   +3 more
doaj   +1 more source

Optical spin-dependent beam separation in cyclic group symmetric metasurface

Nanophotonics, 2020
Cross-polarization scattering of a circularly polarized beam from nano-rod introduces a geometric phase to the outgoing beam with opposite circular polarization.
Lee Yeon Ui, Ozerov Igor, Bedu Frédéric, Kim Ji Su, Fages Frédéric, Wu Jeong Weon   +5 more
doaj   +1 more source

High-power thin-disk lasers emitting beams with axially-symmetric polarizations

Nanophotonics, 2021
We present the intracavity generation of beams with radial polarization at an average output power of 750 W and an optical efficiency of 43% from a continuous wave thin-disk laser. Circular grating waveguide output couplers (GWOC) were used to select the
Abdou Ahmed Marwan, Beirow Frieder, Loescher André, Dietrich Tom, Bashir Danish, Didychenko Denys, Savchenko Anton, Pruss Christof, Fetisova Marina, Li Fangfang, Karvinen Petri, Kuittinen Markku, Graf Thomas   +12 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source