Results 91 to 100 of about 428,876 (333)

Reevaluating the Activity of ZIF‐8 Based FeNCs for Electrochemical Ammonia Production

open access: yesAdvanced Functional Materials, EarlyView.
Though receiving much attention, the field of electrochemical nitrogen reduction reaction (eNRR) to ammonia is marked by doubts about whether this reaction is possible in aqueous media. This work sheds light on this question for iron single‐atom on N‐doped carbon (FeNC) catalysts—a class of well‐known catalysts that is also worth testing for the sister
Caroline Schneider   +6 more
wiley   +1 more source

Real scalar dark matter: relativistic treatment

open access: yesJournal of High Energy Physics, 2019
A stable real scalar provides one of the simplest possibilities to account for dark matter. We consider the regime where its coupling to the Standard Model fields is negligibly small.
Giorgio Arcadi   +3 more
doaj   +1 more source

Warm Dark Matter from keVins [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2012
32 pages, 9 figures, 2 ...
Stephen F King, Alexander Merle
openaire   +3 more sources

Thermal Phase‐Modulation of Thickness‐Dependent CVD‐Grown 2D In2Se3

open access: yesAdvanced Functional Materials, EarlyView.
A comprehensive study of CVD‐grown 2D In2Se3 reveals a distinct thickness‐dependent phase landscape and a reversible, thermally driven transformation between β″ and β* variants. In situ TEM electron diffraction and Raman spectroscopy reveal structural dynamics, while the structural invariance of the α‐phase in ultrathin regimes highlights its stability—
Dasun P. W. Guruge   +6 more
wiley   +1 more source

Feebly interacting U(1)B−L gauge boson warm dark matter and XENON1T anomaly

open access: yesPhysics Letters B, 2020
The recent observation of an excess in the electronic recoil data by the XENON1T detector has drawn many attentions as a potential hint for an extension of the Standard Model (SM).
Gongjun Choi   +2 more
doaj   +1 more source

Strongly coupled dark energy with warm dark matter vs. LCDM [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2017
Cosmologies including strongly Coupled (SC) Dark Energy (DE) and Warm dark matter (SCDEW) are based on a conformally invariant (CI) attractor solution modifying the early radiative expansion. Then, aside of radiation, a kinetic field $ $ and a DM component account for a stationary fraction, $\sim 1\, \%$, of the total energy.
Bonometto, Silvio A.   +2 more
openaire   +2 more sources

3D Digital Light Processing of Redox‐Active Polymers for Electrochemical Applications

open access: yesAdvanced Functional Materials, EarlyView.
3D printing of electrochemically switchable conducting polymers is achieved by Digital Light Processing of redox‐active carbazole‐based polymer materials. Complex 2D and 3D architectures including dot arrays and pyramids clearly show the potential for novel 3D switchable electrochemical devices for sensors, electrochromic displays as well as 3D printed
Christian Delavier   +4 more
wiley   +1 more source

Quantum Statistical Effects on Warm Dark Matter and the Mass Constraint from the Cosmic Structure at Small Scales

open access: yesThe Astrophysical Journal Letters
The suppression of the small-scale matter power spectrum is a distinct feature of warm dark matter (WDM), which permits a constraint on the WDM mass from galaxy surveys. In the thermal relic WDM scenario, quantum statistical effects are not manifest.
Zhijian Zhang, Weikang Lin
doaj   +1 more source

Saxion cosmology for thermalized gravitino dark matter

open access: yesJournal of High Energy Physics, 2017
In all supersymmetric theories, gravitinos, with mass suppressed by the Planck scale, are an obvious candidate for dark matter; but if gravitinos ever reached thermal equilibrium, such dark matter is apparently either too abundant or too hot, and is ...
Raymond T. Co   +3 more
doaj   +1 more source

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