Ultrahigh vacuum system for synthesis and chemical surface characterization of nanosized and thin film materials

• Fachliche Zuordnung: Physik der kondensierten Materie
• Förderung: Förderung in 2015
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 266711088

This ultrahigh vacuum system is a major instrument and part of my start-up package (Neuberufung) at the Ruhr University Bochum (RUB).This instrument is similar to one I used during my sabbatical leave in 2010-2011 at the Fritz-Haber Institute of the Max Planck Society in Berlin (Prof. Freund's collaboration). I moved to Germany (RUB) in October of 2013 and this system is one of two major machines I intend to acquire (start-up commitment from RUB) in order to be able to continue my research program in the areas of surface science and nano-catalysis at RUB. This system will allow the synthesis and in situ characterization of the composition, chemical state and reactivity of nanostructured surfaces. It is made of several interconnected chambers: sample transfer chamber, preparation chamber (molecular beam epitaxy growth by electron beam evaporation, in situ ligand removal of ex situ prepared colloidal materials by plasma treatments), characterization chamber (XPS, TPD), and infrared (IR) spectroscopy chamber. The preparation chamber will be used for the synthesis of samples to be studied in situ within the other two systems, to clean ex situ prepared samples synthesized in the liquid phase by colloidal methods, as well as to prepare samples to be investigated ex situ at different national and international synchrotron facilities with techniques such as grazing incidence small angle X-ray scattering (GISAXS), X-ray absorption fine-structure spectroscopy (XAFS) and nuclear resonant inelastic X-ray scattering (NRIXS), the latter for phonon studies (complementary to IR spectroscopy).

• DFG-Verfahren: Forschungsgroßgeräte
• Großgeräte: Ultrahigh vacuum system for synthesis and chemical surface characterization of nanosized and thin film materials
• Gerätegruppe: 8320 Ultrahochvakuumanlagen
• Antragstellende Institution: Ruhr-Universität Bochum
• Leiterin: Professorin Dr. Beatriz Roldan Cuenya, bis 9/2017