Results 61 to 70 of about 254,167 (296)

Convective Magnetic Flux Emergence Simulations from the Deep Solar Interior to the Photosphere: Comprehensive Study of Flux Tube Twist

The Astrophysical Journal
The emergence of magnetic flux from the deep convection zone plays an important role in solar magnetism, such as the generation of active regions and triggering of various eruptive phenomena, including jets, flares, and coronal mass ejections.
Shin Toriumi, Hideyuki Hotta, Kanya Kusano   +2 more
doaj   +1 more source

Variations in p-mode Parameters and Sub-surface Flows of Active Regions with Flare Activity [PDF]

, 2011
We examine the characteristic properties of photospheric p-modes and sub-photospheric flows of active regions (ARs) observed during the period of 26-31 October 2003.
Ambastha, A., Maurya, R. A.
core  

Engineering Porous Hollow Metal‐Poly(Heptazine Imide) Spheres: An Optimized Synthetic Strategy for Controlling Surface, Morphology, and Properties

Advanced Functional Materials, EarlyView.
Hollow poly(heptazine imide) spheres are prepared through a novel approach that integrates hard templating with ionothermal synthesis. This method enables precise control over surface area, pore volume, hydrophilicity, light absorption, band position, and metal composition. These tunable properties facilitate the customized design of semiconductors for
Lingli Ni, Erik Troschke, Henrik Vorwerk, Shiva Shahbazi Avarvand, Andreas Stihl, Nadzeya Brezhneva, Marius Hermesdorf, Desirée Leistenschneider, Felix H. Schacher, Jacob Schneidewind, Martin Oschatz   +10 more
wiley   +1 more source

Prospects of Electric Field Control in Perpendicular Magnetic Tunnel Junctions and Emerging 2D Spintronics for Ultralow Energy Memory and Logic Devices

Advanced Functional Materials, EarlyView.
Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp, Brahmdutta Dixit, Yifei Yang, Deyuan Lyu, Thomas Peterson, Qi Jia, Yu‐Chia Chen, Jian‐Ping Wang   +7 more
wiley   +1 more source

Helicity Fluxes and Hemispheric Helicity Rule of Active Regions Emerging from the Convection Zone Dynamo

The Astrophysical Journal
Using a 3D nonlinear mean field solar dynamo model, we investigate the magnetic helicity flux and magnetic twist, as well as tilt parameters of bipolar magnetic regions (BMRs) emerging from the solar convection zone owing to the magnetic buoyancy ...
Valery V. Pipin, Shangbin Yang, Alexander G. Kosovichev   +2 more
doaj   +1 more source

Bend–Twist Coupling for Small Wind Turbines: A Blade Design Methodology to Enhance Power Generation

Energies
Small-scale wind turbines (SWTs) represent a promising solution for the energy transition and the decentralization of electricity generation in non-interconnected areas.
Juan Pablo Vanegas-Alzate, María Antonia Restrepo-Madrigal, José Luis Torres-Madroñero, César Nieto-Londoño, Germán Alberto Barragán de los Rios, Jorge Mario Tamayo-Avendaño, Julián Sierra-Pérez, Joham Alvarez-Montoya, Daniel Restrepo-Montoya   +8 more
doaj   +1 more source

The Influence of Annealing on the Sb Layer in the Synthesis of [001]‐Oriented Sb2Se3 Film for Photoelectrochemical Hydrogen Gas Generation

Advanced Functional Materials, EarlyView.
[001]‐oriented Sb2Se3 film with improved crystallinity and adjusted composition is achieved via a new thermal treatment approach consisting of preliminary annealing of the Sb layer before its selenization. The findings of this work demonstrate enhanced charge carriers' transportation, a stable performance, and an improvement of H2 generation from ...
Magno B. Costa, Moisés A. de Araújo, Joaquim Puigdollers, Pablo Ortega, Teresa Andreu, Cristobal Voz, Edgardo Saucedo, Lucia H. Mascaro   +7 more
wiley   +1 more source

The Relationship between Kinetic and Magnetic Helicity in Solar Active Regions

The Astrophysical Journal
Using Helioseismic and Magnetic Imager/Solar Dynamics Observatory data, we search for a relationship between kinetic helicity and magnetic helicity in solar active regions (ARs) using a sample of 62 ARs from 2010 May to 2015 May.
Yang Liu, Rudolf Komm, Nicholas H. Brummell, J. Todd Hoeksema, Bhishek Manek, Gherardo Valori   +5 more
doaj   +1 more source

Vision Measurement of Twisting a Double-Bimorph Piezoelectric Actuator

Applied Sciences
Piezoelectric actuators are devices that convert electrical energy into mechanical energy. One of the applied structures of such actuators is a cantilever beam, which is composed of a nonpiezoelectric carrier layer and one or more piezoelectric active ...
Dariusz Grzybek, Andrzej Sioma
doaj   +1 more source

Reconstruction of a Highly Twisted Magnetic Flux Rope for an Inter-active-region X-Class Solar Flare

Frontiers in Astronomy and Space Sciences, 2019
Solar eruptions are manifestation of explosive release of magnetic energy in the Sun's corona. Large solar eruptions originate mostly within active regions, where strong magnetic fields concentrate on the solar surface. Here we studied the magnetic field
Chaowei Jiang, Aiying Duan, Xueshang Feng, Peng Zou, Pingbing Zuo, Yi Wang   +5 more
doaj   +1 more source