Results 81 to 90 of about 486,453 (314)
Advances in Condensed Matter Physics, 2019 We report on a single-shot diffraction imaging methodology using relativistic femtosecond electron pulses generated by a radio-frequency acceleration-based photoemission gun.
Jinfeng Yang, Yoichi Yoshida
doaj +1 more source
Comparison of Kikuchi Diffraction Geometries in Scanning Electron Microscope [PDF]
Recent advances in scanning electron microscope (SEM) based Kikuchi diffraction have demonstrated the important potential for reflection and transmission methods, like transmission Kikuchi diffraction (TKD) and electron backscatter diffraction (EBSD). Furthermore, with the advent of compact direct electron detectors (DED) it has been possible to place ...
arxiv +1 more source
The diffraction of electrons by graphite [PDF]
Proceedings of the Royal Society of London. Series A - Mathematical and Physical Sciences, 1936 The structure first attributed to graphite by Debye and Scherrer, and by Hull from X-ray powder patterns was confirmed by Hassell and Mark, by Bernal, and, finally, by Mauguin and Ott who relied mainly on single crystal X-ray photographs. The assigned structure is such that the hexagonal unit cell has the dimensions, a
H. Wilman, George Ingle Finch
openaire +2 more sources
Advanced Engineering Materials, EarlyView.Characterizations of the expanse of processes parameter combinations that can be used to minimize cracking and porosity while optimizing crystallization and hardness are used to assess laser processing of four glass‐forming alloys. The set of viable alloys for laser additive manufacturing is not the same as for suction casting; some alloys are common ...
Soumya Mohan +3 more
wiley +1 more source
Antiferromagnetism in NiO Observed by Transmission Electron Diffraction [PDF]
, 2012 Neutron diffraction has been used to investigate antiferromagnetism since 1949. Here we show that antiferromagnetic reflections can also be seen in transmission electron diffraction patterns from NiO. The diffraction patterns taken here came from regions as small as 10.5 nm and such patterns could be used to form an image of the antiferromagnetic ...
arxiv +1 more source
Advanced Engineering Materials, EarlyView.Molecular dynamics simulations are advancing the study of ribonucleic acid (RNA) and RNA‐conjugated molecules. These developments include improvements in force fields, long‐timescale dynamics, and coarse‐grained models, addressing limitations and refining methods.
Kanchan Yadav, Iksoo Jang, Jong Bum Lee
wiley +1 more source
Powder Metallurgy and Additive Manufacturing of High‐Nitrogen Alloyed FeCr(Si)N Stainless Steel
Advanced Engineering Materials, EarlyView.The alloying element Nitrogen enhances stainless steel strength, corrosion resistance, and stabilizes austenite. This study develops austenitic FeCr(Si)N steel production via powder metallurgy. Fe20Cr and Si3N4 are hot isostatically pressed, creating an austenitic microstructure.
Louis Becker +5 more
wiley +1 more source
New Journal of Physics, 2017 We have theoretically and experimentally demonstrated an RF compression-based jitter-amplification effect in high-brightness electron source ultrafast electron diffraction (UED), which degrades the temporal resolution significantly.
Yingpeng Qi +7 more
doaj +1 more source
Hadronic Final States and Diffraction at HERA [PDF]
arXiv, 2011 Recent results from the ep (electron-proton) collider HERA are presented. Jet production and diffraction type reactions allow tests of predictions of Quantum Chromodynamics (QCD). Jet measurements are used to improve the combined H1-ZEUS parton density fits by adding an additional constraint on the gluon distribution in the proton and, at the same time,
arxiv
Advanced Engineering Materials, EarlyView.Herein, silicon‐based nanoparticle coatings on X2CrNiMo17‐12‐2 metal powder are presented. The coating process scale, process parameters, nanoparticle size (65–200 nm) as well as the coating amount are discussed regarding powder properties. The surface roughness affects the flowability, while reflectance depends on the coating material and surface ...
Arne Lüddecke +4 more
wiley +1 more source