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

这个超高真空系统是我在鲁尔大学波鸿分校(RUB)创业包(Neuberufung)的一部分，也是一个重要的仪器。这个仪器与我2010-2011年在柏林马克斯·普朗克学会弗里茨-哈伯研究所(Fritz-Haber Institute of the Max Planck Society)休假时使用的仪器类似(弗洛因德教授的合作)。我于2013年10月搬到德国(RUB)，该系统是我打算购买的两台主要机器之一(RUB的启动承诺)，以便能够继续我在RUB表面科学和纳米催化领域的研究计划。该系统将允许合成和原位表征纳米结构表面的组成、化学状态和反应性。它由几个相互连接的室组成：样品传送室、制备室(电子束蒸发分子束外延生长、等离子体处理原位去除异地制备的胶体材料的配体)、表征室(XPS、TPD)和红外光谱室。该制备室将用于在另外两个系统内原位合成待研究样品，清洗胶体方法在液相中合成的异地制备样品，以及利用掠入射小角X射线散射(GISAXS)、X射线吸收精细结构光谱(XAFS)和核共振非弹性X射线散射(NRIXS)等技术在不同的国内和国际同步加速器设施中制备待原位研究样品，后者用于声子研究(补充红外光谱)。

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).