Results 41 to 50 of about 28,295 (284)

Attosecond dispersive soft X-ray absorption fine structure spectroscopy in graphite [PDF]

, 2018
Phase transitions of solids and structural transformations of molecules are canonical examples of important photo-induced processes, whose underlying mechanisms largely elude our comprehension due to our inability to correlate electronic excitation with ...
Biegert, Jens, Buades, Bárbara, Cousin, Seth L., Di Palo, Nicola, Koppens, Frank, León, Iker, Moonshiram, Dooshaye, Pi, Irina, Picón, Antonio, Schmidt, Peter, Sidiropoulos, Themistoklis P. H.   +10 more
core   +2 more sources

DAFNE-Light DXR1 Soft X-Ray Synchrotron Radiation Beamline: Characteristics and XAFS Applications

Condensed Matter, 2019
X-ray Absorption Fine Structure Spectroscopy (XAFS) is a powerful technique to investigate the local atomic geometry and the chemical state of atoms in different types of materials, especially if lacking a long-range order, such as nanomaterials, liquids,
Antonella Balerna
doaj   +1 more source

X-ray Absorption Fine Structure in Embedded Atoms

, 1994
Oscillatory structure is found in the atomic background absorption in x-ray-absorption fine structure (XAFS). This atomic-XAFS or AXAFS arises from scattering within an embedded atom, and is analogous to the Ramsauer-Townsend effect.
A. I. Frenkel, B. W. Holland, C. H. Booth, C. H. Booth, F. Bridges, G. G. Li, J. J. Rehr, J. J. Rehr, J. J. Rehr, J. J. Rehr, J. J. Rehr, M. Newville, P. A. Lee, R. G. Newton, S. I. Zabinsky   +14 more
core   +1 more source

Dust absorption and scattering in the silicon K-edge [PDF]

, 2019
The composition and properties of interstellar silicate dust are not well understood. In X-rays, interstellar dust can be studied in detail by making use of the fine structure features in the Si K-edge.
Costantini, E., de Groot, F., de Vries, C. P., Mohr, P., Mutschke, H., Rogantini, D., Tielens, A. G. G. M., Zeegers, S. T.   +7 more
core   +3 more sources

Operando characterization of batteries using x-ray absorption spectroscopy: advances at the beamline XAFS at synchrotron Elettra

, 2017
X-ray absorption spectroscopy is a synchrotron radiation based technique that is able to provide information on both local structure and electronic properties in a chemically selective manner.
G. Aquilanti, M. Giorgetti, R. Dominko, L. Stievano, I. Arčon, N. Novello, L. Olivi   +6 more
semanticscholar   +1 more source

Possible charge inhomogeneities in the CuO2 planes of YBa2Cu3O6+x (x=0.25, 0.45, 0.65, 0.94) from pulsed neutron diffraction

, 2000
The atomic pair distribution functions (PDF) of four powder samples of YBa2Cu3O6+x (x=0.25, 0.45, 0.65, 0.94) at 15 K have been measured by means of pulsed neutron diffraction. The PDF is modelled using a full-profile fitting approach to yield structural
A. Bianconi, A. Ignatov, A. Williams, B.H. Toby, B.H. Toby, C.H. Booth, D. Louca, E. L. Brosha, E. Prince, E.A. Stern, E.S. Božin, G. H. Kwei, G.H. Kwei, G.H. Kwei, J. Demsar, J. Etheridge, J. Mustre de Leon, J. Mustre-de Leon, J. Röhler, J.D. Sullivan, J.M. Tranquada, K. Kishio, M. François, M. Gutmann, P. Schweiss, R.P. Sharma, S. J. L. Billinge, S. J. L. Billinge, S.D. Conradson, S.I. Zabinsky, S.J.L. Billinge, T. Egami, T. Egami, T. Egami, T. Schneider, T.A. Tyson, Y.J. Uemura   +36 more
core   +1 more source

Determination of the nature of the Cu coordination complexes formed in the presence of NO and NH3 within SSZ-13 [PDF]

, 2015
Ammonia-selective catalytic reduction (NH3-SCR) using Cu zeolites is a well-established strategy for the abatement of NOx gases. Recent studies have demonstrated that Cu is particularly active when exchanged into the SSZ-13 zeolite, and its location in ...
Andrew M. Beale, Andy Van Yperen-De Deyne, David S. Wragg, Ines Lezcano-Gonzalez, Karen Hemelsoet, Michel Waroquier, Mingos D. M. P., Veronique Van Speybroeck, Wojciech A. Slawinski   +8 more
core   +2 more sources

Artificial Amorphous Interface Matters for Boosting High‐Voltage Stable LiCoO2 Cathode

Advanced Functional Materials, EarlyView.
The amorphization of phosphate‐based surface layer with favorable Li‐ion conducting kinetics is realized by precisely tailored atomic‐level fabrication. This amorphous coating enables the lithium cobalt oxide (LCO) cathode superior high‐voltage rate capability and cycling performance, owing to the fast interfacial ionic transport and maintained ...
Jinjin Ma, Yipeng Sun, Xiaozhang Yao, Haoqi Ren, Wen Zhang, Jian Peng, Ruizhi Yu, Ruying Li, Changhong Wang, Jigang Zhou, Xueliang Sun   +10 more
wiley   +1 more source

Local structure of solid and liquid gold probed by reverse Monte Carlo analysis of X-ray absorption data

Journal of Synchrotron Radiation
The increase in computational capabilities of modern computers has allowed us to develop new accurate methods for EXAFS (extended X-ray absorption fine structure) data-analysis.
Nodoka Hara, Fabio Iesari, Toshihiro Okajima, Andrea Di Cicco   +3 more
doaj   +1 more source

Data science assisted investigation of catalytically active copper hydrate in zeolites for direct oxidation of methane to methanol using H2O2

Scientific Reports, 2021
Dozens of Cu zeolites with MOR, FAU, BEA, FER, CHA and MFI frameworks are tested for direct oxidation of CH4 to CH3OH using H2O2 as oxidant. To investigate the active structures of the Cu zeolites, 15 structural variables, which describe the features of ...
Junya Ohyama, Airi Hirayama, Nahoko Kondou, Hiroshi Yoshida, Masato Machida, Shun Nishimura, Kenji Hirai, Itsuki Miyazato, Keisuke Takahashi   +8 more
doaj   +1 more source