Results 51 to 60 of about 13,531 (230)

Carbon storage and DNA absorption in allophanic soils and paleosols [PDF]

open access: yes, 2014
Andisols and andic paleosols dominated by the nanocrystalline mineral allophane sequester large amounts of carbon (C), attributable mainly to its chemical bonding with charged hydroxyl groups on the surface of allophane together with its physical ...
DJ Lowe   +31 more
core   +2 more sources

VerSoX B07-B: a high-throughput XPS and ambient pressure NEXAFS beamline at Diamond Light Source

open access: yesJournal of Synchrotron Radiation
The beamline optics and endstations at branch B of the Versatile Soft X-ray (VerSoX) beamline B07 at Diamond Light Source are described. B07-B provides medium-flux X-rays in the range 45–2200 eV from a bending magnet source, giving access to local ...
David C. Grinter   +17 more
doaj   +1 more source

Interface structure and corrosion protection of hybrid particles prepared via surfactant- and silica-assisted wet ball milling

open access: yesResults in Surfaces and Interfaces, 2022
The paper proposes a simple way to simultaneously modify iron particles with both silica and surfactant molecules, which involves wet ball milling of iron with silica glass and surfactants (stearic and n-perfluorononanoic acid).
A.V. Syugaev   +4 more
doaj   +1 more source

Changes in the near edge X-ray absorption fine structure of hybrid organic-inorganic resists upon exposure

open access: yes, 2018
We report on the near edge X-ray absorption fine structure (NEXAFS) spectroscopy of hybrid organic-inorganic resists. These materials are nonchemically amplified systems based on Si, Zr, and Ti oxides, synthesized from organically modified precursors and
Brigo, Laura   +6 more
core   +1 more source

X-ray Spectroscopy Study of Defect Contribution to Lithium Adsorption on Porous Carbon

open access: yesNanomaterials, 2023
Lithium adsorption on high-surface-area porous carbon (PC) nanomaterials provides superior electrochemical energy storage performance dominated by capacitive behavior.
Yuliya V. Fedoseeva   +4 more
doaj   +1 more source

Interface originated modification of electron-vibration coupling in resonant photoelectron spectroscopy

open access: yes, 2014
We present a comprehensive study of the photon energy ($h \nu$) dependent line-shape evolution of molecular orbital signals of large $\pi$-conjugated molecules by resonant photoelectron spectroscopy (RPES).
Reinert, Friedrich   +3 more
core   +1 more source

NEXAFS imaging of synthetic organic materials

open access: yesMaterials Today, 2012
The utilization of near edge x-ray absorption fine structure spectroscopy (NEXAFS) in achieving strong, novel contrast for soft x-ray microscopy and scattering methods has been afforded significant success in elucidating outstanding issues in organic materials systems due to the unique combination of high sensitivity to chemical functionality and thus ...
Watts, Ben, Ade, Harald
openaire   +1 more source

Towards Poisson noise limited optical pump soft X-ray probe NEXAFS spectroscopy using a laser-produced plasma source.

open access: yesOptics Express, 2019
We present a laboratory setup for near edge X-ray absorption spectroscopy (NEXAFS) in the soft X-ray regime between 284 eV to 1303 eV with a resolving power of up to 1370.
A. Jonas   +6 more
semanticscholar   +1 more source

Hole-depletion of ladders in Sr$_{14}$Cu$_{24}$O$_{41}$ induced by correlation effects

open access: yes, 2011
The hole distribution in Sr$_{14}$Cu$_{24}$O$_{41}$ is studied by low temperature polarization dependent O K Near-Edge X-ray Absorption Fine Structure measurements and state of the art electronic structure calculations that include core-hole and ...
Akimitsu, J.   +9 more
core   +1 more source

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou   +8 more
wiley   +1 more source

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