Results 111 to 120 of about 25,467 (256)

LOCAL STRUCTURE IN SiO2 GLASSES BY OXYGEN K EDGE XANES

, 1985
Les structures des spectres d'absorption X près du seuil (XANES) K de l'oxygène dans des verres de silices bien caractérisés ont été mesurées sur le synchrotron de Frascati.
J. Petiau, M. Benfatto, I. Davoli, J. Garcia, C.R. Natoli, M. Fanfoni, P. Chiaradia, G. Calas, E. Fritsch, A. Bianconi, A. Gargano, A. Marcelli   +11 more
core   +1 more source

Spectroscopy-guided discovery of three-dimensional structures of disordered materials with diffusion models

Machine Learning: Science and Technology
Spectroscopy techniques such as x-ray absorption near edge structure (XANES) provide valuable insights into the atomic structures of materials, yet the inverse prediction of precise structures from spectroscopic data remains a formidable challenge.
Hyuna Kwon, Tim Hsu, Wenyu Sun, Wonseok Jeong, Fikret Aydin, James Chapman, Xiao Chen, Vincenzo Lordi, Matthew R Carbone, Deyu Lu, Fei Zhou, Tuan Anh Pham   +11 more
doaj   +1 more source

Vanadium Cation Exchange‐Driven Reconstruction of MOF‐Derived Cobalt Hydroxide Electrodes for Electrocatalysis and Energy Storage

Advanced Science, EarlyView.
A room‐temperature vanadium cation exchange strategy is developed to achieve simultaneous structural reconstruction and electronic/defect modulation of ZIF‐67 on nickel foam. The resulting mesoporous V20–Co(OH)2 electrode exhibits superior OER activity with low overpotentials and enhanced lattice oxygen participation.
Yongbeen Kim, Seungwoo Han, Wonyoung Lee
wiley   +1 more source

Stabilized Cubic GeTe With Matched Grain‐Boundary Networks and Band Convergence for High‐Performance Dual‐Mode Thermoelectric Devices

Advanced Science, EarlyView.
I‐doping stabilizes the cubic phase of GeTe and generates “electron‐transparent, phonon‐blocking” grain boundary networks while inducing valence‐band convergence. This synergistic structural‐electronic design enables effective electron‐phonon decoupling, achieving an exceptional average zTave of ∼1.62, a peak zT of ∼2.2, and enhanced mechanical ...
Xiaobo Tan, Xuri Rao, Huangshui Ma, Jiaxing Luo, Fan Feng, Zijian Lin, Ruiheng Li, Maoji Tian, Siqi Huo, Min Hong, Ran Ang   +10 more
wiley   +1 more source

Mixed-Valence Atomic-Layer Iridium Patches Enhance Alkaline Hydrogen Evolution. [PDF]

Adv Sci (Weinh)
Engineering iridium architectures on Cu3P nanowires reveals that atomic‐layer Ir patches form a mixed‐valence interfacial motif with an anisotropic electronic structure. This configuration balances water dissociation and hydrogen adsorption/desorption, delivering superior alkaline hydrogen evolution with a 27 mV overpotential and 1 A cm−2 operation in ...
Ahmadian Koudakan P, Hao X, Guo R, Mazaheri O, Pichler M, Luo Q, Zhang B, Pan S.   +7 more
europepmc   +2 more sources

Harmonizing Rigidity and Flexibility: Embedding COF Quantum Dots Into Extracellular Matrix Gel as Carbon Monoxide Depot for Acoustically Triggered Time‐Programmable Anti‐Infective Therapy

Advanced Science, EarlyView.
A rigid‑flexible integrated CO depot is engineered by embedding rigid COFQDs into a flexible ECM gel network. The rigid framework enables high‑capacity CO storage and sonodynamic bacterial killing, while the flexible ECM gel controls sustained CO release, collectively eradicating multidrug‑resistant infection and promoting scarless healing.
Baohong Sun, Fang Han, Chunxiao Zhu, Zhiyuan Yang, Haoru Wang, Jinpei Mei, Jie Chen, Jingwen Zhu, Zihan Bo, Taju Wu, Xiaogang Zhou, Tao Ma, Yutian Su, Youhui Lin   +13 more
wiley   +1 more source

STRUCTURAL STUDIES OF THE LIQUID Rb-RbBr SYSTEMS BY XANES

, 1986
Une étude XANES du seuil d'absorption K du brome est reportée pour le système fondu Rb/RbBr en fonction de la concentration.A XANES study above the Br K absorption edge of the molten Rb/RbBr system is reported versus ...
J. DUPUY, A. SADOC, J. F. JAL
core   +1 more source

Hydrogen‐Bonding‐Directed Assembly of COF/Nanocluster Hybrids With Synergistic Roles for Efficient Solar Hydrogen Production

Advanced Science, EarlyView.
Hydrogen‐bonding‐directed assembly enables molecular‐level integration of a covalent organic framework and NiZnCo nanoclusters. The engineered interface couples directional charge transfer, multimetal synergy, and photothermal‐assisted catalysis, providing a versatile strategy for efficient noble‐metal‐free solar hydrogen production.
Ailing Pan, De Yan, Anwu Xu, Hong Du, Abulikemu Abudu Rexit, Gang Zhang   +5 more
wiley   +1 more source

Hemeproteins: Recent Advances in Quantitative XANES Analysis

, 2007
Recently, we have shown that multiple scattering (MS) theory, via the MXAN package, is able to reproduce the experimental X-ray absorption near edge structure (XANES) data of biological samples, in particular hemeproteins, from the rising edge up to ...
M. BENFATTO, S. DELLA LONGA, A. ARCOVITO, D'ANGELO, Paola   +3 more
core   +1 more source

Exact solution of a variety of X-ray probes in the Falicov-Kimball model with dynamical mean-field theory

Condensed Matter Physics, 2012
We examine the core-level X-ray photoemission spectroscopy (XPS), X-ray absorption near-edge spectroscopy (XANES) and X-ray emission spectroscopy (XES) in the Falicov-Kimball model by using the exact solution from dynamical mean-field theory.
A.M. Shvaika, J.K. Freericks
doaj   +1 more source