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The Versaprobe III is an X-ray photoelectron spectrometer. It has a scanning, monochromatic X-ray source (Al Kα) that allows the X-ray beam to be focused to diameters of < 10 μm. The acquisition of X-ray induced secondary electron images enables "scanning electron microscope-like" operation, indicating local identification of possible inhomogeneities of the sample surfaces, which can subsequently be chemically analysed.
The Argon cluster source, installed for the first time in Austria, allows the gentle liberation of inorganic materials from organic contamination, as well as the creation of depth profiles of organic materials (e.g. polymers) under mild conditions.
The sample stage in the analysis chamber can be heated or cooled and allows contacting of the sample for in-situ experiments. Transfer from a glovebox or the PHI 710 Auger Nanoprobe is possible via a sample transfer chamber under vacuum or inert gas conditions.
The Versaprobe III was purchased in 2022 with FFG funds for research & development infrastructure support as part of the ELSA project in collaboration with the Competence Centre for Electrochemical Surface Technology (CEST).
The Analytical Instrumentation Center of the TU Wien (AIC) offers services for surface analytics and depth profiling using electron spectroscopy mainly for institutes and employees of the TU Wien, respectively. Institutes outside the TU Wien can place an order for analysis within research cooperations with the AIC. On a limited scale also orders from a third part can be accepted.
Methods & Expertise for Research Infrastructure
• surface analysis by X-ray electron spectrometer
• local identification of possible inhomogeneities of sample surfaces by scanning monochromatic X-ray source
• gentle liberation of inorganic materials from organic contamination by argon cluster source
• depth profiling of organic materials (e.g. polymers) under mild conditions by argon cluster source
• in-situ experiments by heated or cooled sample stage in analysis chamber
• Reflection Electron Energy Loss Spectroscopy (REELS) possible
CEST-Centre of Electrochemical and Surface Technology