What is XPS sheeting?
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44 Citations | This gives confidence in the ability of XPS to investigate a biological surface. |
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. |
10 Citations | Thus, in this research, sheeting is optimized to satisfy the constraints considering the fuzziness so that the optimization is more practical from the engineering point of view. |
45 Citations | This model performs as well as the current design rules, and it provides insight into the sheeting behaviour. |
48 Citations | It will be applicable to any kind of specimen that can be analysed in a conventional XPS system. |
| It does serve, however, to indicate the applications of XPS to biomaterials surface science. | |
17 Citations | Until this issue is addressed it is likely that XPS will continue to be used on an ad hoc basis for particularly challenging specimens in high profile cases. |
233 Citations | These studies demonstrate the interconnection of XPS techniques and results over fields that often seem totally divorced from one another. |
Related Questions
What information can XPS give?5 answersXPS can provide information about the elemental composition of surfaces, including the chemical state of the elements, binding energy of electron states, thickness of layers near the surface, density of electronic states, and uniformity of elemental composition across the surface and as a function of depth. It can also yield information about the structure, surface termination, built-in electric potentials, and band offsets of films and heterostructures. XPS spectra can be used to identify chemical species at a surface through peak positions and shapes, and the intensities in the spectra can be used to obtain information on the concentration and distribution of chemical species. XPS features can provide insights into the properties and electronic structure of materials, and can be related to underlying chemical and physical phenomena.
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.
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