Results 71 to 80 of about 37,276 (209)

Unique reactivity of confined metal atoms on silicon substrate

open access: yes, 2008
When small metal assembles such as single atoms or small clusters consisting of a few atoms are supported on the semiconducting or oxide substrates, the sp electrons in the metal can be confined by the metal-substrate interface, which may be critical to ...
包信和   +6 more
core  

Application of Atomic Spectroscopy of Trapped Radioactive Ions in Nuclear Physics

open access: yesAtoms
A review is given of precision measurements of hyperfine constants and nuclear g-factors measured with ions confined in ion traps. The nuclear physics observables which can be extracted from these types of measurements are discussed.
Ruben P. de Groote
doaj   +1 more source

An Atomic-Array Optical Clock with Single-Atom Readout

open access: yesPhysical Review X, 2019
Currently, the most accurate and stable clocks use optical interrogation of either a single ion or an ensemble of neutral atoms confined in an optical lattice.
Ivaylo S. Madjarov   +7 more
doaj   +1 more source

Covalent Organic Frameworks—Organic Chemistry Beyond the Molecule

open access: yesMolecules, 2017
The synthesis of organic molecules has at its core, purity, definitiveness of structure, and the ability to access specific atoms through chemical reactions.
Christian S. Diercks   +2 more
doaj   +1 more source

Alternative techniques for the production and manipulation of ultracold atoms

open access: yes, 2012
This Thesis contains details of the construction and characterisation of a compact apparatus for the cooling of ultracold atoms to quantum degeneracy, and their manipulation in flexible holographic optical traps. We have designed and built two iterations
Bruce, Graham D.
core  

Confined muonic hydrogen-like atoms

open access: yes, 2021
A muonic hydrogen-like atom is formed when replacing the electron in it by a negative muon $$\mu ^-$$. The Schrödinger equation corresponds to the one of the atoms with a binding particle $$(\mu ^-)$$ with mass $$M_{\mu } \approx 207m_e$$, where $$m_e ...
J. F. Rivas-Silva   +3 more
core   +1 more source

Shell structure in free and confined atoms using the density functional theory

open access: yes, 2000
The average local electrostatic potential function, defined as the electrostatic potential divided by the electron density, is used to study the shell structure in free and confined atoms within Kohn-Sham density functional theory.
R. Vargas   +7 more
core   +1 more source

A quantum chemical analysis of Zn and Sb doping and co-doping in SnO2

open access: yesAIP Advances, 2017
This work presents a quantum chemical study of Zn and Sb doping and co-doping in SnO2 carried out by a DFT+U method. The analysis has been developed by introducing three different modifications in the otherwise pure SnO2 system.
Luis Villamagua   +3 more
doaj   +1 more source

One-dimensional confined motion of single metal atoms inside double-walled carbon nanotubes.

open access: yes, 2009
Peapods containing La@C_{82} metallofullerenes are transformed into double-walled carbon nanotubes (DWNTs) using in situ electron beam irradiation at 80 kV. Using this low accelerating voltage we find no damage to the outer single-walled carbon nanotube (
Gemming, T   +8 more
core   +1 more source

Magnetic-field-dependent trap loss of ultracold metastable helium [PDF]

open access: yes, 2012
We have experimentally studied the magnetic-field dependence of the decay of a Bose-Einstein condensate of metastable 4He atoms confined in an optical dipole trap, for atoms in the m=+1 and m=-1 magnetic substates, and up to 450 G.
Knoop, S.   +4 more
core   +1 more source

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