Engineering Research Equipment: Scanning Tunnelling Microscope

正在研制一台扫描隧道显微镜（STM）。这将与现有的低能电子衍射、俄歇电子能谱、反射红外能谱和温度程序化反应设备一起使用。它将用于检查重组的表面，以确定催化反应的活性位点。要研究的特定体系包括由于氧或硫层而发生重组的钨表面，其对噻吩的吸附活性高；在一氧化碳的存在下，吸附物引起的镀层，如镍（100）的重组；以及表面聚合物的结构，例如由噻吩、苯胺或柳丁形成的结构。

A scanning tunnelling microscope (STM) is being acquired. This will be use in conjunction with existing equipment for low-energy electron diffraction, Auger electron spectroscopy, reflection infrared spectroscopy, and temperature-programmed reaction. It will be used to examine restructured surfaces to identify active sites for catalytic reactions. Specific systems to be studied include tungsten surfaces that have undergone restructuring due to oxygen or sulfur adlayers, which have high activity for thiophene adsorption; adsorbate-induced restructuring of adlayers, such as nickel(100) in the presence of carbon monoxide; and the structures of surface polymers, such as those formed from thiophene, aniline, or lutidine.