Results 121 to 130 of about 695,127 (377)
Atomically resolved phase transition of fullerene cations solvated in helium droplets
Nature Communications, 2016 Helium has a unique phase diagram and below 25 bar it does not form a solid even at the lowest temperatures. Electrostriction leads to the formation of a solid layer of helium around charged impurities at much lower pressures in liquid and superfluid ...
M. Kuhn +16 more
semanticscholar +1 more source
Self‐Trapped Hole Migration and Defect‐Mediated Thermal Quenching of Luminescence in α‐ and β‐Ga2O3
Advanced Functional Materials, EarlyView.Temperature‐dependent photoluminescence and first‐principles calculations reveal self‐trapped hole migration as the microscopic origin of thermal quenching in α‐ and β‐Ga2O3. The low migration barrier in α‐Ga2O3 enables defect trapping and enhances blue luminescence, while the higher barrier in β‐Ga2O3 preserves ultraviolet emission at elevated ...
Nima Hajizadeh +11 more
wiley +1 more source
Meitian dizhi yu kantanObjectiveShale gas reservoirs hold considerable helium reserves despite relatively low helium abundance, establishing them as a critical replacement for helium production growth.
Zhiyuan XIN +3 more
doaj +1 more source
BSGF - Earth Sciences Bulletin, 2020 The former Vaux-en-Bugey field, first French methane production from early 20th century, is revisited as a case study to address the present generation and accumulation theories for gases like hydrogen and helium.
Deronzier Jean-François +1 more
doaj +1 more source
Localized helium excitations in 4He_N-benzene clusters
, 2003 We compute ground and excited state properties of small helium clusters 4He_N containing a single benzene impurity molecule. Ground-state structures and energies are obtained for N=1,2,3,14 from importance-sampled, rigid-body diffusion Monte Carlo (DMC).
A. Bach +50 more
core +1 more source
Advanced Functional Materials, EarlyView.Herein, the topochemical transformation of cobalt‐based layered hydroxides into nanocomposites is investigated using advanced real‐time characterization techniques combined with thermogravimetric analysis. The study reveals how interlayer carboxylic acids direct the transformation pathway, highlighting the role of carbon content and anion length. These
Camilo Jaramillo‐Hernández +5 more
wiley +1 more source
Laryngoscope Investigative OtolaryngologyObjective Heliox, a mixture of helium and oxygen, has been shown to improve laminar airflow and decrease airway resistance in children. This study aims to describe the outcomes of heliox use in children with respiratory compromise and to identify ...
Ashley Young +5 more
doaj +1 more source
Helium enrichment theory and exploration ideas for helium-rich gas reservoirs
Petroleum Exploration and DevelopmentUsing gas and rock samples from major petroliferous basins in the world, the helium content, composition, isotopic compositions and the U and Th contents in rocks are analyzed to clarify the helium enrichment mechanism and distribution pattern and the ...
Shengfei QIN +8 more
doaj +1 more source
Molecular Cross‐Linking of MXenes: Tunable Interfaces and Chemiresistive Sensing
Advanced Functional Materials, EarlyView.In this study, Ti3C2Tx MXenes are initially functionalized using oleylamine ligands to form stable dispersions in an organic solvent. Subsequently ligand exchange with α,ω‐diaminoalkanes enables cross‐linking, along with precise tuning of interfaces. This structural control translates into tunable charge transport and responsive VOC sensing, showing ...
Yudhajit Bhattacharjee +12 more
wiley +1 more source