Results 131 to 140 of about 18,173,480 (298)

The Gondola for the Sunrise iii Balloon-Borne Solar Observatory

open access: yes
Publisher Copyright: © The Author(s) 2025.Sunrise iii is a balloon-borne solar observatory dedicated to investigating the physics governing the magnetism and dynamics in the lower solar atmosphere.
Korpi-Lagg, Andreas   +24 more
core   +1 more source

Desıgn of a control and data acquısıtıon system for a multı-mode solar trackıng farm [PDF]

open access: yes, 2012
This paper presents a combination network design for a solar tracking farm consisting of n-solar tracking systems. Serial communication protocol has been adopted for this network with developed strategy to make the farm expandable for possible future ...
Abid, Ahmed, Ali, Ramzy, Al-Naima, Fawzi
core  

Sub‐Nanometer Cobalt on Tungsten Titanium Carbide MXene (W2TiC2Tx): An Electrocatalyst for Highly Efficient and Stable Alkaline Hydrogen Evolution at Industrial‐Scale Current Density

open access: yesAdvanced Materials, EarlyView.
A novel W2TiC2Tx MXene prepared through a MAX‐phase route supports sub‐nanometer Co for highly efficient alkaline hydrogen evolution. Strong Co–W interfacial interactions optimize hydrogen adsorption and catalytic activity, enabling low overpotentials of 63 mV at 10 mA cm−2, small Tafel slope of 44.3 mV dec−1, and exceptional durability at industrially
Xiaopeng Liu   +15 more
wiley   +1 more source

Fractal nature of galaxy clustering in the updated CfA redshift catalog

open access: yesScientific Reports
We have recently argued that the expansion of the Universe is compatible not only with standard homogeneity, but also with fractal homogeneity in a hierarchical fractal cosmology.
Wiesław M. Macek, Dariusz Wójcik
doaj   +1 more source

A new era in solar system astronomy with JWST. [PDF]

open access: yesNat Commun, 2023
Villanueva GL, Milam SN.
europepmc   +1 more source

Diketopyrrolopyrrole‐Based Cation as a Semiconducting Spacer in Layered Perovskite

open access: yesAdvanced Materials, EarlyView.
Diketopyrrolopyrrole cation incorporated layered perovskites exhibiting extended absorption profiles and enhanced charge carrier mobility with type‐II energy alignment. The improved photoconversion efficiency demonstrates the critical role of incorporating organic semiconductors in optimizing layered perovskite performance.
Waygen Thor   +8 more
wiley   +1 more source

Directing Near‐Perfect (001) Orientation in Wafer‐Scale BiOI Thin Films via Halide‐Mediated van der Waals Stacking

open access: yesAdvanced Materials, EarlyView.
Our work introduces a new framework that fundamentally changes how orientation in bismuth oxyhalide systems is approached. Comprehensive experiments, backed by theoretical models, reveal the pivotal role of halide anions to modify the van der Waals stacking energies required to direct orientation. Our method enables the fabrication of near perfect (001)
Gabriel Aygur   +10 more
wiley   +1 more source

Swarm of lightsail nanosatellites for Solar System exploration. [PDF]

open access: yesSci Rep, 2023
Santi G   +15 more
europepmc   +1 more source

Side‐Chain‐Induced Interlayer Slipping in Metalloporphyrin COFs Enables Microenvironment and Spin‐State Regulation for Photocatalytic CO2 Reduction

open access: yesAdvanced Materials, EarlyView.
Alkoxy chain length drives a continuous transition from eclipsed AA to a serrated, slipped AA* configuration over Co‐porphyrin COFs. A moderate slip both contracts the pore channel to enrich CO2 and suppress hydrogen evolution, and enhances collective high‐spin of Co sites, which delivers a record CO production rate with high selectivity.
Jie He   +8 more
wiley   +1 more source

Hierarchical Flexible Ceramic Nanofiber Membrane for Simultaneous Membrane Distillation and Photocatalytic Hydrogen Evolution

open access: yesAdvanced Materials, EarlyView.
A hierarchical flexible ceramic nanofiber membrane integrates a La‐stabilized ZrO2 scaffold with superhydrophobic UiO‐66‐NH2/CdS heterojunctions. The gas–liquid–solid interfacial architecture sustains vapor‐selective desalination, visible‐light charge separation, and rapid H2 extraction, enabling simultaneous freshwater production and photocatalytic ...
Pengfei Lin   +9 more
wiley   +1 more source

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