Results 81 to 90 of about 106,724 (293)

High-harmonic Plasma Emission Induced by Electron Beams in Weakly Magnetized Plasmas

The Astrophysical Journal
Electromagnetic radiation at higher harmonics of the plasma frequency ( ω ∼ n ω _pe , n > 2) has been occasionally observed in type II and type III solar radio bursts, yet the underlying mechanism remains undetermined.
Chuanyang Li, Yao Chen, Zilong Zhang, Hao Ning, TangMu Li   +4 more
doaj   +1 more source

RETRACTED: Quantitative prediction of type II solar radio emission from the Sun to 1 AU

Geophysical Research Letters, 2016
Coronal mass ejections (CMEs) are frequently associated with shocks and type II solar radio bursts. Despite involving fundamental plasma physics and being the archetype for collective radio emission from shocks, type II bursts have resisted detailed ...
J. M. Schmidt, Iver H. Cairns
doaj   +1 more source

A Universal Interfacial Dipole Strategy for Defect Suppression in Inverted Perovskite Solar Cells With Tunable Bandgaps

Advanced Functional Materials, EarlyView.
A 2D heterointerface with a two‐site anchor bridge suppresses nonradiative recombination at the perovskite/C₆₀ interface by reducing surface defects, elevating the Fermi level, and strengthening the electric field. This strategy enables efficient electron extraction, delivering 26.32% efficiency, 1.217 V Voc, excellent operational stability, and broad ...
Chaohui Li, Hyoungwon Park, Fabian Streller, Klaus Götz, Jiwon Byun, Shudi Qiu, Zhangyu Yuan, Jonas Englhard, Andrej Vincze, Zijian Peng, Lirong Dong, Yanxue Wang, Chao Liu, Jingjing Tian, Mingjie Feng, Peichun Liao, Fu Yang, Andreas Späth, Andres Osvet, Thomas Heumueller, Marcus Halik, Silke H. Christiansen, Tobias Unruh, Julien Bachmann, Rainer H. Fink, Ning Li, Larry Lüer, Christoph J. Brabec   +27 more
wiley   +1 more source

Interplanetary Type III Radio Emission Locations Deduced from the Underlying Electron Exciter Beam Kinematics

The Astrophysical Journal
Direction-finding techniques from spacecraft have been used to locate and track interplanetary type III radio sources for many decades. These source locations are typically found to be farther from the Sun than expected on the bases of interplanetary ...
Michael J. Reiner
doaj   +1 more source

Evidence for solar wind control of Saturn radio emission [PDF]

Using data collected by the Voyager 1 and 2 spacecraft in 1980 and 1981, strong evidence is presented for a direct correlation between variations in the solar wind at Saturn and the level of activity of Saturn's nonthermal radio emission.
Desch, M. D.
core   +1 more source

Integrated Visible Light and Oxidant Protection Through Multifunctional Sunscreens

Advanced Healthcare Materials, EarlyView.
High‐energy visible radiation (HEVR), although less energetic than UV light, penetrates deeper into the skin and contributes to photoaging, pigmentation disorders, and oxidative stress. The development of new HEVR‐targeted filters, therefore, represents not only a scientific challenge but also a pressing public health and cosmetic industry need.
Beatriz Peñín, Raúl Losantos, Ignacio Funes‐Ardoiz, Diego Sampedro   +3 more
wiley   +1 more source

Electron Cyclotron Maser Emission and the Brightest Solar Radio Bursts

The Astrophysical Journal
This paper investigates the incidence of coherent emission in solar radio bursts, using a revised catalog of 3800 solar radio bursts observed by the Nobeyama Radio Polarimeters from 1988 to 2023.
Stephen M. White, Masumi Shimojo, Kazumasa Iwai, Timothy S. Bastian, Gregory D. Fleishman, Dale E. Gary, Jasmina Magdalenic, Angelos Vourlidas   +7 more
doaj   +1 more source

Oscillation of solar radio emission at coronal acoustic cut-off frequency

, 2017
Recent SECCHI COR2 observations on board STEREO-A spacecraft have detected density structures at a distance of 2.5--15~R propagating with periodicity of about 90~minutes.
Brazhenko, A. I., Hanslmeier, A., Melnik, V. N., Panchenko, M., Pylaev, O. S., Zaqarashvili, T. V.   +5 more
core   +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

Small-scale Inhomogeneity Effects on Coherent Solar Radio Emission

The Astrophysical Journal
The coherent radio emission mechanism of solar radio bursts (SRBs) is one of the most complicated and controversial topics in solar physics. To clarify the mechanism(s) of different types of SRBs, (radio-) wave excitation by energetic electrons in ...
Xiaowei Zhou, Patricio A. Muñoz, Jan Benáček, Lijie Zhang, Dejin Wu, Ling Chen, Zongjun Ning, Jörg Büchner   +7 more
doaj   +1 more source