Surface spectroscopy

Surface spectroscopy serves to get information about the chemical nature of sample surfaces or surface near regions. For those a spectrometer working under ultra high vacuum conditions is used. The X-ray photoelectron spectrometer allows to analyse the elemental surface composition quantitatively. Different binding states of the detected elements may be distinguished. The knowledge of the chemical surface composition and the kind of functional surface groups is the fundament to evaluate surface reactivity and apply chemical and physico-chemical methods to modify the solid surface.

Angle resolved photoelectron spectroscopy (ARXPS) is a non-destructive method to investigate the distribution of elements or functional groups in the depth of the sample surface.

Main topics:

  • Photoelectron spectroscopy (XPS, ESCA) to quantitatively analyze elements and functional surface groups
  • Quantitative detection of adsorbed surface active species (surfactants, drugs, latices, proteins, cells)
  • Chemisorption of reactive polymers at inorganic and polymer surfaces
  • Non-destructive depth profile analysis to determine the molecular orientation, lateral distributions and the coverage of adhering molecules
  • Imaging Photoelectronspectroskopy (Imaging-XPS und Mapping)
  • Small-spot-analysis to investigate micro objects
  • Surface analytical investigation of biological objects by kryo technique

Additional information: