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105 Citations | This article is the first in a series of guides assembled by a committee of experienced XPS practitioners that are intended to assist inexperienced users by providing information about good practices in the use of XPS. |
13 Citations | XPS is shown to be a powerful tool in characterizing the materials sets that comprise SDT devices. |
29 Citations | This is the first observation of the splitting of the XPS in a ferroelectric crystal. |
18 Citations | A comparison of angle-resolved XPS data from different samples thus requires careful and consistent choices for algorithm parameters. |
78 Citations | The accuracy of quantitative XPS analysis can be improved using predetermined transmission functions. |
12 Citations | EW XPS and PE max appear to correlate with the expected chemistries of all the systems studied. |
233 Citations | These studies demonstrate the interconnection of XPS techniques and results over fields that often seem totally divorced from one another. |
48 Citations | It will be applicable to any kind of specimen that can be analysed in a conventional XPS system. |
Our results show the wide applicability of high resolution XPS with hard x rays from a synchrotron source. |
Related Questions
What is xps?3 answersX-ray photoelectron spectroscopy (XPS) is a technique used for surface characterization and analysis of materials, including polymers and biomedical materials. It provides a quantitative elemental analysis of the top few nanometers of a solid surface. XPS requires five basic components: an x-ray source, a sample holder, a kinetic energy analyzer, an electron detector, and an ultra-high vacuum system. The analyzer separates the photoelectrons emitted by the sample based on their kinetic energy, similar to how a monochromator separates light based on wavelength in a spectrophotometer. XPS can induce changes in the chemical state of elements, which may affect the understanding of their environmental behavior. For example, X-ray irradiation can lead to a negative shift in the U 4f spectra, indicating a break in uranyl molecules or photocatalytic reduction to U(IV) species. XPS is a widely used technique in material surface analysis, but its results can be subject to operator arbitrariness. Core-level XPS is particularly useful for investigating the electronic states of strongly correlated electron systems.
How is XPS used in bitumen research?5 answersXPS is used in bitumen research for surface chemical analysis and characterization of materials. It can be used to identify contamination on a surface, characterize materials for process control, and analyze new materials in a research environment. XPS spectral analysis, imaging, and sputter profiling are applied to various types of samples in industrial laboratories. In the study of adhesion between aggregates and bitumen, XPS was used to characterize the interface between bitumen and minerals, before and after peeling, and detect sulfur residues. XPS analysis of archaeological bitumen was used to determine its provenance and shed light on trade and communication among human populations. XPS is a valuable tool in bitumen research for understanding the composition, properties, and origins of bitumen samples.
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