Results 11 to 20 of about 48,769 (254)

SUPERLUMINAL SYNCHROTRON RADIATION

Resource-Efficient Technologies, 2018
To avoid complex computations based on wide Fourier expansions, the electromagnetic field of synchrotron radiation (SR) was analyzed using Lienard–Wiechert potentials in this work. The retardation equation was solved for ultrarelativistic movement of rotating charge at distances up to the trajectory radius.
Aginian, M. A., Arutunian, S. G., Lazareva, E. G., Margaryan, A. V.   +3 more
openaire   +3 more sources

Engineering a local acid-like environment in alkaline medium for efficient hydrogen evolution reaction

Nature Communications, 2022
While catalysts have intrinsic activities toward reactions, such performances often require further optimization. Here, authors engineer an acid-like environment in alkaline media by fine-tuning the reaction environment of platinum nanoparticles on oxide
Hao Tan, Bing Tang, Ying Lu, Qianqian Ji, Liyang Lv, Hengli Duan, Na Li, Yao Wang, Sihua Feng, Zhi Li, Chao Wang, Fengchun Hu, Zhihu Sun, Wensheng Yan   +13 more
doaj   +1 more source

Visualizing the valence states of europium ions in Eu-doped BaAl2O4 using X-ray nanoprobe mapping

Journal of Synchrotron Radiation, 2022
This study develops and successfully demonstrates visualization methods for the characterization of europium (Eu)-doped BaAl2O4 phosphors using X-ray nanoprobe techniques.
Yu-Hao Wu, Yung-Yang Lin, Jeng-Lung Chen, Shih-Yu Fu, Shu-Chi Huang, Chien-yu Lee, Bo-Yi Chen, Gung-Chian Yin, E-Wen Huang, Mau-Tsu Tang, Bi-Hsuan Lin   +10 more
doaj   +1 more source

Relation between the Co-O bond lengths and the spin state of Co in layered Cobaltates: a high-pressure study

Scientific Reports, 2017
The pressure-response of the Co-O bond lengths and the spin state of Co ions in a hybrid 3d-5d solid-state oxide Sr2Co0.5Ir0.5O4 with a layered K2NiF4-type structure was studied by using hard X-ray absorption and emission spectroscopies. The Co-K and the
Yi-Ying Chin, Hong-Ji Lin, Zhiwei Hu, Chang-Yang Kuo, Daria Mikhailova, Jenn-Min Lee, Shu-Chih Haw, Shin-An Chen, Walter Schnelle, Hirofumi Ishii, Nozomu Hiraoka, Yen-Fa Liao, Ku-Ding Tsuei, Arata Tanaka, Liu Hao Tjeng, Chien-Te Chen, Jin-Ming Chen   +16 more
doaj   +1 more source

Embedding atomic cobalt into graphene lattices to activate room-temperature ferromagnetism

Nature Communications, 2021
Graphene has shown incredible promise as ideal material for numerous fields; however its use in spintronics has been hampered by the lack of intrinsic magnetism.
Wei Hu, Chao Wang, Hao Tan, Hengli Duan, Guinan Li, Na Li, Qianqian Ji, Ying Lu, Yao Wang, Zhihu Sun, Fengchun Hu, Wensheng Yan   +11 more
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Bayesian framework for analyzing adsorption processes observed via time-resolved X-ray diffraction

Scientific Reports, 2023
Clarifying dynamic processes of materials is an important research topic in materials science. Time-resolved X-ray diffraction is a powerful technique for probing dynamic processes.
Yuichi Yokoyama, Shogo Kawaguchi, Masaichiro Mizumaki   +2 more
doaj   +1 more source

Comparative study of Ar-implanted Ti-Zr-V non-evaporable getter films on the Al-alloy substrate

AIP Advances, 2018
Original and Ar-implanted Ti-Zr-V non-evaporable getter (NEG) films were characterized using scanning electron microscope, X-ray diffractometer, electron spectroscopy for chemical analysis, and transmission electron microscopy.
Ling-Hui Wu, Ting-Chun Lin, Chia-Mu Cheng, Chin-Chun Chang, Che-Kai Chan, Shen-Yaw Perng, I-Ching Sheng   +6 more
doaj   +1 more source

Specific radiation damage is a lesser concern at room temperature

IUCrJ, 2019
Carrying out macromolecular crystallography (MX) experiments at cryogenic temperatures significantly slows the rate of global radiation damage, thus facilitating the solution of high-resolution crystal structures of macromolecules.
Guillaume Gotthard, Sylvain Aumonier, Daniele De Sanctis, Gordon Leonard, David von Stetten, Antoine Royant   +5 more
doaj   +1 more source

Tilting and rotational motions of silver halide crystal with diffracted X-ray blinking

Scientific Reports, 2021
The dynamic properties of crystalline materials are important for understanding their local environment or individual single-grain motions. A new time-resolved observation method is required for use in many fields of investigation.
Masahiro Kuramochi, Hiroki Omata, Masaki Ishihara, Sander Ø. Hanslin, Masaichiro Mizumaki, Naomi Kawamura, Hitoshi Osawa, Motohiro Suzuki, Kazuhiro Mio, Hiroshi Sekiguchi, Yuji C. Sasaki   +10 more
doaj   +1 more source

In-situ spectroscopic observation of dynamic-coupling oxygen on atomically dispersed iridium electrocatalyst for acidic water oxidation

Nature Communications, 2021
Uncovering the dynamics of active sites in the working conditions is important yet challenging. Here the authors identify dynamic-coupling oxygen on atomically dispersed iridium sites during oxygen evolution reaction using in situ techniques.
Hui Su, Wanlin Zhou, Wu Zhou, Yuanli Li, Lirong Zheng, Hui Zhang, Meihuan Liu, Xiuxiu Zhang, Xuan Sun, Yanzhi Xu, Fengchun Hu, Jing Zhang, Tiandou Hu, Qinghua Liu, Shiqiang Wei   +14 more
doaj   +1 more source