Results 91 to 100 of about 15,721 (298)

Discharge Tubes with Noble Gases [PDF]

open access: yes
These discharge tubes made of fused quartz were obtained in 1915 from Sir William Ramsay of the University of London. Each contains one of the rare noble gases discovered in the 1890s by Ramsay: Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), and ...
Ramsay, William
core  

Steering Oxygen Activation Pathways via Redox Dual‐Defects in 2D Hydrated WO3 for High‐Yield Singlet Oxygen Evolution

open access: yesAdvanced Functional Materials, EarlyView.
Redox dual‐defects (Cs substitution and O vacancies) in 2D hydrated WO3 steer O2 activation toward selective singlet oxygen evolution. WO‐CO achieves 8.6–15.8 times higher 1O2 production than single‐defect or pristine catalysts, enabling efficient pollutant mineralization via a pathway‐selective photocatalytic mechanism.
Sheng‐Qi Guo   +8 more
wiley   +1 more source

Positron ionization of the noble gases [PDF]

open access: yes, 2016
We apply our relativistic complex optical-potential method to investigate positron ionization of the noble gases: neon, argon, krypton and xenon. We compare our results of integrated cross sections for direct ionization with experimental measurements ...
McEachran, Robert, Stauffer, A D
core   +1 more source

Vesicle-specific noble gas analyses of 'popping rock': Implications for primordial noble gases in earth [PDF]

open access: yes, 1997
Gases trapped in individual vesicles in the volatile-rich basaltic glass 'popping rock' were found to have the same carbon dioxide, helium-4, and argon-40 composition, but a variable 40Ar/36Ar ratio (~4000 to ≤40,000).
Burnard, Pete   +2 more
core   +3 more sources

Interface Effects in Ultrathin Silicon on Insulator Films

open access: yesAdvanced Functional Materials, EarlyView.
This work establishes a systematic framework to discriminate how bulk and interface phenomena affect charge transport in ultrathin P‐doped silicon‐on‐insulator (SOI) films. For Si films below 15 nm, electrical characterization demonstrates that interface states drive charge transport, shifting the metal‐insulator transition (MIT) critical dopant ...
Andrea Pulici   +8 more
wiley   +1 more source

Optimal strategies for optical quantum memories using long-lived noble-gas spins

open access: yesPhysical Review Research
Nuclear spins of noble gases exhibit exceptionally long coherence times and can potentially serve as a long-lived storage medium for quantum information. We analyze and compare the performance of two mechanisms for mapping the quantum state of light onto
Or Katz   +5 more
doaj   +1 more source

Coupling Anodic Activity and Stability at Ni‐Based Non‐Oxide Catalysts via Coordinating Alcohol Oxidation and Oxygen Evolution

open access: yesAdvanced Functional Materials, EarlyView.
A cooperative and competitive interrelationship between alcohol oxidation (AOR) and water oxidation (OER) was observed on a typical anode catalyst of Ni2P. In situ Raman spectroscopy and electrochemical analyses revealed a specific complementary mechanism between them, in which OER and AOR critically contribute to the activity and stability of anodic ...
Yong Yan   +10 more
wiley   +1 more source

Noble Metal-Loaded WO3-Based Gases—The Gold Anomaly

open access: yesProceedings
Tungsten oxide is one of the most commonly used materials for metal oxide-based gas sensors. In order to tune the sensing behavior, small clusters of noble metals are often added to the surface of WO3.
Anna Staerz, Udo Weimar, Nicolae Barsan
doaj   +1 more source

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler   +4 more
wiley   +1 more source

Application of noble gases to the viability of CO2 storage [PDF]

open access: yes, 2013
Unequivocable evidence for warming of the climate system is a reality. An important factor for reducing this warming is mitigation of anthropogenic CO2 in the atmosphere.
Holland, Greg   +5 more
core   +1 more source

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