Results 61 to 70 of about 11,108,449 (286)
Advanced Science, EarlyView.A piezocatalytic strategy enables simultaneous wastewater purification and hydrogen generation by harnessing mechanical energy. Complementary piezo‐induced charges are selectively directed toward oxidation and reduction pathways, achieving efficient pollutant degradation and continuous H2 evolution.
Yiqing Wei +8 more
wiley +1 more source
The origin and dynamic interaction of solar magnetic fields [PDF]
, 2008 The dynamics of the solar corona are dominated by the magnetic field which creates its structure. The magnetic field in most of the corona is ‘frozen’ to the plasma very effectively.
Wilmot-Smith, A.L.
core +2 more sources
Current helicity and magnetic field anisotropy in solar active regions [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 The electric current helicity density $\displaystyle χ=\langleε_{ijk}b_i\frac{\partial b_k}{\partial x_j}\rangle$ contains six terms, where $b_i$ are components of the magnetic field. Due to the observational limitations, only four of the above six terms can be inferred from solar photospheric vector magnetograms.
Xu, H. +5 more
openaire +2 more sources
Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks
Advanced Science, EarlyView.Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley +1 more source
The Astrophysical JournalThe three-dimensional (3D) coronal magnetic field has not yet been directly observed. However, for a better understanding and prediction of magnetically driven solar eruptions, 3D models of solar active regions are required.
Marianna B. Korsós +5 more
doaj +1 more source
EUV Line Intensities and the Magnetic Field in Solar Active Regions [PDF]
Symposium - International Astronomical Union, 2001 The Coronal Diagnostic Spectrometer (CDS) on SOHO carries out daily synoptic observations of the Sun in four EUV (extreme ultraviolet) spectra: He I 584 Å, O V 630 Å, Mg IX 368 Å and Fe XVI 360 Å, over a 4 arcmin-wide strip along the solar central meridian.
J. Ireland, A. Fludra
openaire +1 more source
Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review
Advanced Science, EarlyView.Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh +8 more
wiley +1 more source
Dynamics of Subsurface Flows in Solar Active Regions during the 2024 May Storm
The Astrophysical JournalIn 2024 May, the Sun exhibited intense magnetic activity, marked by numerous high-intensity flares resulting from the interaction and merging of NOAA active regions (ARs) 13664 and 13668 in the southern hemisphere and AR 13663 in the northern hemisphere.
B. Lekshmi +3 more
doaj +1 more source
Magnetic Field Evolution of the Solar Active Region 13664
The Astrophysical Journal LettersAbstract On 2024 May 10–11, the strongest geomagnetic storm since 2003 November occurred, with a peak Dst index of −412 nT. The storm was caused by NOAA active region (AR) 13664, which was the source of a large number of coronal mass ejections and flares, including 12 X-class flares.
Robert Jarolim +4 more
openaire +3 more sources
A statistical study on property of spatial magnetic field for solar active region [PDF]
Astrophysics and Space Science, 2014 6figures,22 pages.
openaire +2 more sources