Results 61 to 70 of about 4,306,191 (296)

Defect‐Driven Charge Separation in Ba‐Doped SrTiO3: Correlating Photoelectrochemical Performance With Dye‐Selective Photocatalysis

open access: yesAdvanced Materials Interfaces, EarlyView.
Ba‐doped SrTiO3 perovskites establish a direct correlation between photoelectrochemical activity and photocatalytic performance. Optimized Ba0.5Sr0.5TiO3 exhibits enhanced charge separation, photocurrent generation, and visible‐light‐driven dye degradation through defect‐induced oxygen vacancies and lattice distortion.
Sagar A. Nikam   +6 more
wiley   +1 more source

The Evolution of Coronal Dimmings. I. The Photospheric Footpoint Flux Imbalance

open access: yesThe Astrophysical Journal
Coronal dimmings mark the footpoint regions of coronal mass ejections (CMEs). Measuring the photospheric magnetic field within dimmings offers a direct view of how the eruption’s footpoints evolve.
Larisza D. Krista
doaj   +1 more source

Progress in the modeling of Earth and planetary internal magnetic fields

open access: yes地球与行星物理论评
A majority of the planets in the Solar System are characterized by intrinsic magnetic fields that co-rotate with these celestial bodies. With ongoing advances in human deep-space exploration, magnetic field models have been established for all known ...
Jiawei Gao   +9 more
doaj   +1 more source

A Self‐Cleaning Solar Evaporator Based on MXene/Aramid Nanofiber Aerogels for Efficient Water Desalination

open access: yesAdvanced Materials Interfaces, EarlyView.
This study develops a self‐cleaning solar evaporator based on MXene‐coated aramid nanofiber aerogels for efficient desalination under high‐salinity conditions. The cylindrical evaporator combines strong photothermal conversion, capillary water transport, and self‐rotation triggered by salt accumulation.
Mandeep Singh   +5 more
wiley   +1 more source

The Effect of Spatial Resolution on the Wang–Sheeley–Arge Model Unsigned Open Flux Prediction

open access: yesThe Astrophysical Journal
The open solar magnetic field refers to field lines that are magnetically connected to the surface of the Sun at one end and continue through the corona into the heliosphere.
Andrew Leisner   +5 more
doaj   +1 more source

Recent Advances in Light‐Addressable Electrochemistry for Spatially Resolved Applications

open access: yesAdvanced Materials Technologies, EarlyView.
This comprehensive review highlights light‐addressable electrochemistry as a powerful tool that uses light to control localized chemical reactions on unstructured semiconductor surfaces. The work evaluates advanced strategies to optimize electrode materials for enhanced spatial resolution and stability. Furthermore, it showcases diverse applications in
Nhi Trang Vo   +2 more
wiley   +1 more source

Intermingled Open and Closed Magnetic Field Lines near the Radial Origin of the Heliospheric Current Sheet

open access: yesThe Astrophysical Journal Letters
On 2024 March 30, the Parker Solar Probe crossed the heliospheric current sheet at 13 solar radii while encountering two distinctly different regions at sharp boundaries on several occasions.
F. S. Mozer   +5 more
doaj   +1 more source

Cyclodextrin‐Functionalized Light‐Driven Cu2O Micromotors for Simultaneous Capture and Degradation of Bisphenol A

open access: yesAdvanced Robotics Research, EarlyView.
Fuel‐free Cu2O‐based micromotors functionalized with β‐cyclodextrin actively remove bisphenol A from water under visible light. The cyclodextrin shell captures BPA and enhances micromotor motility, leading to faster degradation and higher overall removal than nonfunctionalized Cu2O and Cu2O@Au.
Luisa Natalia Cordoba Urresti   +3 more
wiley   +1 more source

Nonpotential Magnetic Fields with Emerging Magnetic Flux in a Solar-flare-productive Active Region

open access: yesThe Astrophysical Journal
Using a developing delta-class solar active region (NOAA 12673) as a case study, we analyzed the distribution of solar vector magnetic fields and derived the corresponding magnetic energy and helicity densities from vector magnetograms to characterize ...
Hongqi Zhang   +7 more
doaj   +1 more source

Solar magnetic field reversal as seen at Ulysses [PDF]

open access: yes, 2003
The rapid motion of the Ulysses spacecraft from high southern to high northern latitudes in 2000–2001 provided an excellent opportunity to make inferences regarding the solar magnetic dipole's behaviour around solar maximum.
Smith, E.J., Balogh, A., Jones, G.H.
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