Results 1 to 10 of about 129,906 (293)

Experimental evidence of tetrahedral symmetry breaking in SiO2 glass under pressure

open access: yesNature Communications, 2022
Understanding the structural origin of the anomalous properties of SiO2 liquid and glass at high pressures is fundamental in wide range of scientific fields. Here, the authors find experimental evidence of a bimodal behavior in the translational order of
Yoshio Kono   +21 more
doaj   +1 more source

Reduction of dopant ions and enhancement of magnetic properties by UV irradiation in Ce-doped TiO2

open access: yesScientific Reports, 2021
We report the experimental observation of and theoretical explanation for the reduction of dopant ions and enhancement of magnetic properties in Ce-doped TiO2 diluted magnetic semiconductors from UV-light irradiation.
Tai-Sing Wu   +6 more
doaj   +1 more source

Probing the local emission of CaAlSiN3:Eu2+ via X-ray nanoprobe

open access: yesAIP Advances, 2021
A synchrotron source offers the advantage of continuous and tunable x rays. Therefore, not only an X-ray nanoprobe can provide the desired spatial resolution to measure the elemental distribution of CaAlSiN3:Eu2+ via X-ray fluorescence mapping but X-ray ...
Shu-Chi Huang   +8 more
doaj   +1 more source

Structural insights into the bi-specific cross-over dual variable antibody architecture by cryo-EM

open access: yesScientific Reports, 2023
Multi-specific antibodies (msAbs) are being developed as next generation antibody-based therapeutics. Knowledge of the three-dimensional structures, in the full antibody context, of their fragment antigen-binding (Fab) moieties with or without bound ...
David Fernandez-Martinez   +4 more
doaj   +1 more source

Dynamics of Human Mitochondrial Complex I Assembly: Implications for Neurodegenerative Diseases

open access: yesFrontiers in Molecular Biosciences, 2016
Neurons are extremely energy demanding cells and highly dependent on the mitochondrial oxidative phosphorylation (OXPHOS) system. Mitochondria generate the energetic potential via the respiratory complexes I to IV, which constitute the electron transport
Gabriele Giachin   +4 more
doaj   +1 more source

High-fluence and high-gain multilayer focusing optics to enhance spatial resolution in femtosecond X-ray laser imaging

open access: yesNature Communications, 2022
Here, the authors realize an ultra-high fluence X-ray laser by high-gain multilayer focusing optics. This enables in-solution imaging with 2-nm resolution in a single-pulse exposure, making strides toward biomolecular imaging under physiological ...
Hirokatsu Yumoto   +9 more
doaj   +1 more source

Visualizing the valence states of europium ions in Eu-doped BaAl2O4 using X-ray nanoprobe mapping

open access: yesJournal of Synchrotron Radiation, 2022
This study develops and successfully demonstrates visualization methods for the characterization of europium (Eu)-doped BaAl2O4 phosphors using X-ray nanoprobe techniques.
Yu-Hao Wu   +10 more
doaj   +1 more source

Unconventional exciton evolution from the pseudogap to superconducting phases in cuprates

open access: yesNature Communications, 2022
The nature of the excitations in the pseudogap regime and their relation to superconductivity remain core issues in cuprate high-T c superconductivity.
A. Singh   +8 more
doaj   +1 more source

Engineering a local acid-like environment in alkaline medium for efficient hydrogen evolution reaction

open access: yesNature Communications, 2022
While catalysts have intrinsic activities toward reactions, such performances often require further optimization. Here, authors engineer an acid-like environment in alkaline media by fine-tuning the reaction environment of platinum nanoparticles on oxide
Hao Tan   +13 more
doaj   +1 more source

Embedding atomic cobalt into graphene lattices to activate room-temperature ferromagnetism

open access: yesNature Communications, 2021
Graphene has shown incredible promise as ideal material for numerous fields; however its use in spintronics has been hampered by the lack of intrinsic magnetism.
Wei Hu   +11 more
doaj   +1 more source

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