What is the significance of X-ray Photoelectron Spectroscopy (XPS) in nanotechnology?
XPS is a surface-sensitive technique that provides information about the elemental composition, chemical state, and electronic state of the materials. By irradiating a sample with X-rays and measuring the kinetic energy of emitted photoelectrons, researchers can determine the chemical composition and oxidation states of elements at the surface. XPS is essential for analyzing surface chemistry and modifications in nanomaterials.