However, direct experimental observation of the 3D local chemical order has been difficult because energy dispersive spectroscopy integrates the composition of atomic columns along the zone axes7,32,34 and diffuse electron reflections may originate from planar defects instead of local chemical order35. ...
The chemical composition of the Sun The solar chemical composition is an important ingredient in our understanding of the formation, structure and evolution of both the Sun and our solar syst... M Asplund,N Grevesse,AJ Sauval,... - 《Astrophysics & Space Science》 被引量: 2575发表: 2009年...
solar spectra/ Sunsolar atmosphereatomic physicsatomic spectrasolar spectrachemical compositionThe atomic physics relevant to the interpretation of solar spectra produced by plasmas at temperatures 105 K are discussed. Methods for determining relative abundance ratios are presented and examples provided from ...
Nuclear pore complexes (NPCs) mediate bidirectional nucleocytoplasmic transport of substances in eukaryotic cells. However, the accurate molecular arrangement of NPCs remains enigmatic owing to their huge size and highly dynamic nature. Here we determined the structure of the asymmetric unit of the inner...
The discovery of the neutron by James Chadwick in 1932 clarified both the problem of isotopic composition and the connection between atomic weight A and nuclear spin. With protons and neutrons now known to be the building blocks of nuclei, the study of nuclear structure was launched. In 1935,...
Finally, we conclude with a discussion about the degree of consistency between the chemical composition, the inner strain and the optical and electrical properties of the films obtained with the different thermodynamic parameters of growth. Several hypotheses are discussed in order to understand the ...
Infrared (IR) spectroscopy is a broadly applicable, composition sensitive analytical technique. By leveraging the high spatial resolution of atomic force microscopy (AFM), the photothermal effect, and wavelength-tunable lasers, AFM-IR en... JJ Schwartz,DS Jakob,C Andrea - 《Chemical Society Reviews...
Determination of the Isotopic Composition of an Enriched Lutetium Spike by MC-ICP-MS Ran Lin, Keqing Zong*, Jie Lin, Ao Yang, Kang Chen, Zhaochu Hu, Yongsheng Liu 文章下载 At. Spectrosc.2022, 43(5),396-402 Received:August 24, 2...
It is now seen as a powerful deposition technique because it exhibits numerous advantages such as compact and pinhole-free layers, accurate control of the thickness, fine-tuning of the chemical composition, and excellent step coverage. In addition, ALD is usually carried out at low temperature (...
Therefore, a complete composition–structure–property correlation has not been established, which restricts the advancement of lead-free relaxor systems. Here, we use atomic-scale correlation analysis in BNT-based lead-free relaxor systems, to decipher the local orderings and their contributions to ...