Ultrahigh-Vacuum-System

这个超高真空系统是我在波鸿鲁尔大学（Ruhr University Bochum， RUB）创业包（Neuberufung）的主要设备和一部分。它复制了我在中佛罗里达大学（美国，2004-2013）担任教授时为我设计和建立的类似系统。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），以便能够在RUB继续我在表面科学和纳米催化领域的研究项目。该系统将允许纳米结构材料的结构、电子/化学性质和反应性的合成和原位表征。它由几个不同的相互连接的室组成，可以由不同的人单独操作，以最大限度地提高科学产出：样品转移室，制备室（通过电子束蒸发进行分子束外晶生长，通过等离子体处理原位去除非原位制备的胶体材料的配体），表征室（XPS， UPS， TPD），高压反应室和显微镜室（AFM/STM）。该制备室将用于在另外两个系统中生成待原位研究的样品，并利用掠入射小角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）等技术在不同的国家和国际同步加速器设施中制备待非原位研究的样品。

This ultrahigh vacuum system is a major instrument and part of my start-up package (Neuberufung) at the Ruhr University Bochum (RUB). It duplicates a similar system I designed and a company built for me while I was a Professor at the University of Central Florida (USA, 2004-2013). 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 structure, electronic/chemical properties and reactivity of nanostructured materials. It is made of several different interconnected chambers that can be operated separately by different persons in order to maximize scientific output: 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, UPS, TPD), high pressure reaction chamber, and microscopy chamber (AFM/STM). The preparation chamber will be used for the generation of samples to be studied in situ within the other two systems, 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).