Results 291 to 300 of about 228,105 (333)

X-Ray Photoelectron Spectroscopy

2013
Abstract Clays and clay minerals interact with the surrounding environment through their surfaces. Their surface chemical compositions can differ from the bulk or average compositions because of chemical reactions such as adsorption, dissolution, and oxidation at the surfaces.
H. Seyama, M. Soma, B.K.G. Theng
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SURFACE ANALYSIS | X-Ray Photoelectron Spectroscopy

2005
X-ray photoelectron spectroscopy (XPS) is the most broadly applicable surface analysis technique today. It relies on measurements of the energy distribution of photon excited electrons from atoms in the surface region of the solid. It can detect all elements except hydrogen with a sensitivity that varies by only a factor of ~ 30 across the periodic ...
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X-Ray Photoelectron Spectroscopy

2021
X-ray photoelectron spectroscopy (XPS) is a spectroscopic technique in the family of electron spectroscopies, that is, those methods whose probe consists of electrons instead of photons. In the case of XPS, a soft, usually monochromatic X-ray causes the emission of electrons by means of the photoelectric effect. Differences in chemical potential and/or
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X-Ray Photoelectron Spectroscopy

2017
X-ray photoelectron spectroscopy (XPS) is a key tool for the quantitative analysis of surface composition and oxidation state, and universally employed in academic and commercial settings to improve the design of heterogeneous catalysts. This section outlines the principles and application of XPS as a versatile, chemically specific analytical tool to ...
Adam F. Lee, Christopher M. A. Parlett, Karen Wilson   +2 more
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X-Ray Photoelectron Spectroscopy

1992
The detection and energy analysis of photoelectrons produced by radiation whose energy exceeds their binding energies is the subject of an extensively-used technique known as photoelectron (PE) spectroscopy. This technique can be conveniently divided into two broad areas, the first employing ultraviolet radiation, hence called ultraviolet photoelectron
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X-Ray Photoelectron Spectroscopy

1986
Photoelectron spectroscopy with characteristic x-rays was developed into a useful analytical technique by Kai Siegbahn and collaborators at Uppsala in the late sixties. The most important applications depend on the ability to measure small shifts in core-electron binding energies, which are related to the valence state and chemical bonding of the atom.
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X-Ray Photoelectron Spectroscopy

2018
When an X-ray is irradiated to a solid sample, electrons are emitted by photoelectric and Auger effects.
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Hard X-ray Photoelectron Spectroscopy

Synchrotron Radiation News, 2018
In this issue, experts in the field of hard X-ray photoelectron spectroscopy (HAXPES) present their current and upcoming activities at facilities worldwide. Their contributions describe state-of-the-art instrumentation and highlight the great potential of the technique by briefly presenting some recent results.
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X-ray Photoelectron Spectroscopy

2007
Hsiao-Lu Lee, Nolan T. Flynn
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X-Ray Photoelectron Spectroscopy (XPS)

2020
Over the past five years, x-ray photoelectron spectroscopy (XPS) has become the work-horse for surface characterization and analysis of polymers and biomedical materials. This technique, also known by an older acronym - Electron Spectroscopy for Chemical Analysis, provides a quantitative elemental analysis of the top 1-20 nm of a solid surface.
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