Physics, Materials Science and Nano Lecture Series

  X-ray Absorption Spectroscopy (XAS) | How XAS Works Introduction to X-ray Absorption Spectroscopy (XAS) X-ray Absorption Spectroscopy (XAS) is a very useful analytical tool that is utilized to probe the electronic structure and local environment of atoms in a material. This non-destructive technique is used extensively in the fields of material science, chemistry, biology, and environmental science, providing distinct information about the properties of a broad range of materials, from catalysts to polymers to biomolecules. In this blog post, we will go deep into the workings of XAS, its principles, applications, and how gorgeous animations make complex processes of XAS visible. What is X-ray Absorption Spectroscopy (XAS)? X-ray Absorption Spectroscopy (XAS) is an analytical method that is studying the interaction of X-rays with matter. Upon absorption by a material, X-rays may remove electrons from inner atomic shells. The energy at which this takes place gives informati...

  X-ray Photoelectron Spectroscopy (XPS): Principles, Applications, and Advancements Introduction X-ray Photoelectron Spectroscopy (XPS), or Electron Spectroscopy for Chemical Analysis (ESCA), is an effective surface analysis method for measuring the elemental composition, chemical state, and electronic structure of materials. XPS is commonly employed in materials science, nanotechnology, chemistry, and semiconductor technologies. In this in-depth guide, we will examine the basic principles, operating mechanisms, benefits, drawbacks, and major applications of XPS, as well as recent developments in the field. What is X-ray Photoelectron Spectroscopy (XPS)? XPS is a spectroscopic method sensitive to the surface of materials, where the kinetic energy of emitted electrons from a material surface under the incidence of X-ray radiation is measured. Analyzing these electrons gives researchers interesting information on a material surface's elemental content and chemical bonds. X...