Development of achromatic full-field hard x-ray microscopy and its application to x-ray absorption near edge structure spectromicroscopy

2014 ◽  
Author(s):  
S. Matsuyama ◽  
Y. Emi ◽  
H. Kino ◽  
Y. Kohmura ◽  
M. Yabashi ◽  
...  
Keyword(s):  
Edge Structure ◽  
Full Field ◽  
X Ray ◽  
X Ray Absorption

Full-Field Calcium K-Edge X-ray Absorption Near-Edge Structure Spectroscopy on Cortical Bone at the Micron-Scale: Polarization Effects Reveal Mineral Orientation

2016 ◽  
Vol 88 (7) ◽  
pp. 3826-3835 ◽  
Author(s):  
Bernhard Hesse ◽  
Murielle Salome ◽  
Hiram Castillo-Michel ◽  
Marine Cotte ◽  
Barbara Fayard ◽  
...  
Keyword(s):  
Cortical Bone ◽  
Edge Structure ◽  
Full Field ◽  
Polarization Effects ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Application toward Confocal Full-Field Microscopic X-ray Absorption Near Edge Structure Spectroscopy

2017 ◽  
Vol 89 (3) ◽  
pp. 2123-2130 ◽  
Author(s):  
Pieter Tack ◽  
Bart Vekemans ◽  
Brecht Laforce ◽  
Jennifer Rudloff-Grund ◽  
Willinton Y. Hernández ◽  
...  
Keyword(s):  
Edge Structure ◽  
Full Field ◽  
X Ray ◽  
X Ray Absorption

Three-dimensional mapping of nickel oxidation states using full field x-ray absorption near edge structure nanotomography

2011 ◽  
Vol 98 (17) ◽  
pp. 173109 ◽  
Author(s):  
George J. Nelson ◽  
William M. Harris ◽  
John R. Izzo ◽  
Kyle N. Grew ◽  
Wilson K. S. Chiu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Oxidation States ◽  
Edge Structure ◽  
Full Field ◽  
X Ray ◽  
Nickel Oxidation ◽  
Three Dimensional Mapping ◽  
X Ray Absorption ◽  
Dimensional Mapping

3D Imaging of Nickel Oxidation States using Full Field X-ray Absorption Near Edge Structure Nanotomography

2019 ◽  
Vol 35 (1) ◽  
pp. 1315-1321 ◽  
Author(s):  
George Nelson ◽  
William Harris ◽  
John Izzo ◽  
Kyle N. Grew ◽  
Wilson K. Chiu ◽  
...  
Keyword(s):  
3D Imaging ◽  
Oxidation States ◽  
Edge Structure ◽  
Full Field ◽  
X Ray ◽  
Nickel Oxidation ◽  
X Ray Absorption

In Situ Heater Design for Nanoscale Synchrotron-Based Full-Field Transmission X-Ray Microscopy

2015 ◽  
Vol 21 (2) ◽  
pp. 290-297 ◽  
Author(s):  
Andrew M. Kiss ◽  
William M. Harris ◽  
Arata Nakajo ◽  
Steve Wang ◽  
Joan Vila-Comamala ◽  
...  
Keyword(s):  
Chemical Conversion ◽  
Operating Conditions ◽  
Edge Structure ◽  
Full Field ◽  
X Ray ◽  
Unreacted Core Model ◽  
Working Distance ◽  
Heater Design ◽  
X Ray Absorption

AbstractThe oxidation of nickel powder under a controlled gas and temperature environment was studied using synchrotron-based full-field transmission X-ray microscopy. The use of this technique allowed for the reaction to be imaged in situ at 55 nm resolution. The setup was designed to fit in the limited working distance of the microscope and to provide the gas and temperature environments analogous to solid oxide fuel cell operating conditions. Chemical conversion from nickel to nickel oxide was confirmed using X-ray absorption near-edge structure. Using an unreacted core model, the reaction rate as a function of temperature and activation energy were calculated. This method can be applied to study many other chemical reactions requiring similar environmental conditions.

Chemical and orientational imaging of polymeric samples

1994 ◽  
Vol 52 ◽  
pp. 68-69
Author(s):  
H. Ade ◽  
B. Hsiao ◽  
G. Mitchell ◽  
E. Rightor ◽  
A. P. Smith ◽  
...  
Keyword(s):  
Ethylene Terephthalate ◽  
National Laboratory ◽  
Brookhaven National Laboratory ◽  
Carbonyl Groups ◽  
Aromatic Rings ◽  
Edge Structure ◽  
X Ray ◽  
Scanning Transmission ◽  
Polymeric Samples ◽  
X Ray Absorption

We have used the Scanning Transmission X-ray Microscope at beamline X1A (X1-STXM) at Brookhaven National Laboratory (BNL) to acquire high resolution, chemical and orientation sensitive images of polymeric samples as well as point spectra from 0.1 μm areas. This sensitivity is achieved by exploiting the X-ray Absorption Near Edge Structure (XANES) of the carbon K edge. One of the most illustrative example of the chemical sensitivity achievable is provided by images of a polycarbonate/pol(ethylene terephthalate) (70/30 PC/PET) blend. Contrast reversal at high overall contrast is observed between images acquired at 285.36 and 285.69 eV (Fig. 1). Contrast in these images is achieved by exploring subtle differences between resonances associated with the π bonds (sp hybridization) of the aromatic groups of each polymer. PET has a split peak associated with these aromatic groups, due to the proximity of its carbonyl groups to its aromatic rings, whereas PC has only a single peak.

scholarly journals Database of ab initio L-edge X-ray absorption near edge structure

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yiming Chen ◽  
Chi Chen ◽  
Chen Zheng ◽  
Shyam Dwaraknath ◽  
Matthew K. Horton ◽  
...  
Keyword(s):  
High Throughput ◽  
Scattering Theory ◽  
Research Community ◽  
Metal Compounds ◽  
Edge Structure ◽  
X Ray ◽  
Initial Release ◽  
Computational Workflow ◽  
X Ray Absorption

AbstractThe L-edge X-ray Absorption Near Edge Structure (XANES) is widely used in the characterization of transition metal compounds. Here, we report the development of a database of computed L-edge XANES using the multiple scattering theory-based FEFF9 code. The initial release of the database contains more than 140,000 L-edge spectra for more than 22,000 structures generated using a high-throughput computational workflow. The data is disseminated through the Materials Project and addresses a critical need for L-edge XANES spectra among the research community.

Sign in / Sign up

Export Citation Format

Share Document