Results 71 to 80 of about 241,773 (303)

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
wiley   +1 more source

Planetary Dynamics and Habitable Planet Formation In Binary Star Systems

open access: yes, 2009
Whether binaries can harbor potentially habitable planets depends on several factors including the physical properties and the orbital characteristics of the binary system.
A Deprit   +108 more
core   +1 more source

Angular Momentum and the Formation of Stars and Black Holes [PDF]

open access: yes, 2009
The formation of compact objects like stars and black holes is strongly constrained by the requirement that nearly all of the initial angular momentum of the diffuse material from which they form must be removed or redistributed during the formation ...
Alexander R D   +141 more
core   +1 more source

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

open access: yesAdvanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang   +8 more
wiley   +1 more source

The JCMT BISTRO Survey: Magnetic Fields Align with Orbital Structure in the Galactic Center

open access: yesThe Astrophysical Journal Letters
We present the magnetic field in the dense material of the Central Molecular Zone (CMZ) of the Milky Way, traced in 850 μ m polarized dust emission as part of the James Clerk Maxwell Telescope B -fields in STar-forming Region Observations survey.
Janik Karoly   +31 more
doaj   +1 more source

Polar kicks and the spin period - eccentricity relation in double neutron stars

open access: yes, 2007
We present results of a population synthesis study aimed at examining the role of spin-kick alignment in producing a correlation between the spin period of the first-born neutron star and the orbital eccentricity of observed double neutron star binaries ...
A. Cumming   +7 more
core   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger   +10 more
wiley   +1 more source

Research of Forming Trajectory of Multi-branches Rose Curve of Double Eccentric Sets Transmission for Orbital Forming Press Head

open access: yesJixie chuandong, 2017
The vector motion model is built to study the trajectory tracking of the orbital forming press head,the motion trajectory of the orbital head with different speed and direction is simulated by using MATLAB software,the motion trajectory is multi ...
Gong Xiaotao, Geng Pei
doaj  

On the Dynamical Ferromagnetic, Quantum Hall, and Relativistic Effects on the Carbon Nanotubes Nucleation and Growth Mechanism

open access: yes, 2007
The mechanism of carbon nanotube (CNT) nucleation and growth has been a mystery for over 15 years. Prior models have attempted the extension of older classical transport mechanisms.
A.R. Biris   +24 more
core   +1 more source

Generation of tunable entanglement and violation of a Bell-like inequality between different degrees of freedom of a single photon [PDF]

open access: yes, 2014
We demonstrate a scheme to generate noncoherent and coherent correlations, i.e., a tunable degree of entanglement, between degrees of freedom of a single photon.
D'Ambrosio, Vincenzo   +6 more
core   +3 more sources

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