Regensburg 2025 – scientific programme

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O: Fachverband Oberflächenphysik

O 52: New Methods: Experiment

O 52.5: Poster

Tuesday, March 18, 2025, 18:00–20:00, P2

Surface-Sensitive Analysis of Liquid Interfaces: Grazing Incidence X-Ray Absorption Spectroscopy with a Double-Mirror Setup — •Lukas Voß, Dirk Lützenkirchen-Hecht, Frederic Braun, and Carlo Schneider — Bergische Universität Wuppertal, NRW

Grazing incidence X-ray absorption spectroscopy (GIXAS) is a powerful technique for surface-sensitive investigations. While the study of solid materials can be easily performed by adjusting the sample orientation to vary the X-ray incidence angle, the examination of liquids requires a specialized experimental setup. To address this challenge, a double-mirror system was integrated into an existing reflectometer, enabling GIXAS measurements on liquid samples. This setup was utilized to study the melting behavior of gallium and the formation of sol-gel-derived germanium oxide nanoparticles.

Keywords: EXAFS; Xray; grazing incidence; liquids; surface