Results 21 to 30 of about 26,804,949 (344)

New development of atomic layer deposition: processes, methods and applications

open access: yesScience and Technology of Advanced Materials, 2019
Atomic layer deposition (ALD) is an ultra-thin film deposition technique that has found many applications owing to its distinct abilities. They include uniform deposition of conformal films with controllable thickness, even on complex three-dimensional ...
P. Oviroh   +4 more
semanticscholar   +1 more source

The XSTAR Atomic Database

open access: yesAtoms, 2021
We describe the atomic database of the xstar spectral modeling code, summarizing the systematic upgrades carried out in the past twenty years to enable the modeling of K-lines from chemical elements with atomic number Z≤30 and recent extensions to handle
Claudio Mendoza   +9 more
doaj   +1 more source

Single-particle cryo-EM at atomic resolution

open access: yesNature, 2020
The three-dimensional positions of atoms in protein molecules define their structure and their roles in biological processes. The more precisely atomic coordinates are determined, the more chemical information can be derived and the more mechanistic ...
T. Nakane   +23 more
semanticscholar   +1 more source

Capillary condensation under atomic-scale confinement [PDF]

open access: yesNature, 2020
Capillary condensation of water is ubiquitous in nature and technology. It routinely occurs in granular and porous media, can strongly alter such properties as adhesion, lubrication, friction and corrosion, and is important in many processes used by ...
Qian Yang   +8 more
semanticscholar   +1 more source

Atomic Energy Commission Reports [PDF]

open access: yes, 1965
Quarterly progress report on metallurgy research operations at Hanford Atomic Products Operation in Richland ...
Westinghouse Electric Corporation. Atomic Power Division.
core   +3 more sources

The Influence of Chemi-Ionization and Recombination Processes on Spectral Line Shapes in Stellar Atmospheres

open access: yesOpen Astronomy, 2011
The chemi-ionization processes in atom - Rydberg atom collisions, as well as the corresponding chemi-recombination processes, are considered as factors of influence on the atom exited-state populations in weakly ionized layers of stellar atmospheres. The
Mihajlov Anatolij A.   +3 more
doaj   +1 more source

Mixing Study in an Unbaffled Stirred Precipitator Using LES Modelling

open access: yesInternational Journal of Chemical Engineering, 2012
This paper describes the CFD modelling of a reactor operating in the nuclear industry using LES approach. The reactor consists of an unbaffled stirred tank reactor in which plutonium precipitation reactions are carried out.
Murielle Bertrand   +4 more
doaj   +1 more source

Experimental and Theoretical Electron Collision Broadening Parameters for Several Ti II Spectral Lines of Industrial and Astrophysical Interest

open access: yesAtoms
A Q-switched Nd:YAG laser was focused on the Pb–Ti alloy samples in several laser-induced breakdown experiments in order to measure the Stark parameters of several spectral lines (58) of singly ionized titanium, including the 3504.89 Å and 3510.83 Å ...
Lucía Isidoro-García   +4 more
doaj   +1 more source

Stark Broadening of Neutral Boron Lines

open access: yesAtoms, 2019
Stark broadening parameters, width and shift, of lines within B I 2s22p−2s2ns spectral series have been calculated. Semi-classical theory in impact approximation has been applied. Temperature dependence of Stark parameters has been studied.
Magdalena Christova   +2 more
doaj   +1 more source

Reversible disorder-order transitions in atomic crystal nucleation

open access: yesScience, 2021
Watching early stage nucleation In classic nucleation theory, a metastable disordered dense liquid or amorphous solid cluster spontaneously and irreversibly transforms into a crystalline nucleus. Jeon et al.
S. Jeon   +20 more
semanticscholar   +1 more source

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