Surface Chemistry and Spectroscopy from Model to Real Systems

9410527韦斯这项研究计划，在分析和表面化学计划的支持下，重点是发展的扫描隧道显微镜的理解，用于确定分子结构和光谱的吸附物种。 局部结构，缺陷和吸附物相互作用对表面的化学和物理性质的影响进行了研究，从孤立的稀有气体原子和芳香族分子的自组装单分子膜和聚合物膜的系统。 仪器的发展和扩展的扫描探针显微镜的能力，包括可调微波频率AC STM的发展，形成了很大一部分的研究工作。 在这些研究中，将使用扫描探针显微镜检查具有基本和技术意义的真实的系统。 %扫描隧道显微镜已被证明是一种非常宝贵的方法，用于检查表面和吸附在表面上的分子的详细结构。 该计划支持的研究旨在详细了解扫描探针显微镜中的成像机制。 充分了解成像的机制，将使改进的扫描探针方法的发展，增加的范围内的有趣的和技术上重要的表面和吸附的覆盖层，可以用这些方法进行探测。 这种仪器开发构成了这里支持的工作的很大一部分。

9410527 Weiss This research program, supported in the Analytical and Surface Chemistry Program, is focussed on developing an understanding of the scanning tunneling microscope for determining molecular structure and spectra of adsorbed species. The effects of local structure, defects and adsorbate interactions on surface chemical and physical properties are studied in systems ranging from isolated rare gas atoms and aromatic molecules to self asembled monolayers and polymer films. Instrumental development and expansion of the capabilities of the scanning probe microscope, including the development of the tunable microwave frequency AC STM, form a large fraction of the research effort. Real systems of fundamental and technological interest will be examined using scanning probe microscopy in these studies. %%% Scanning tunneling microscopy has proven to be an invaluable method for the examination of the detailed structure of surfaces and molecules adsorbed on surfaces. The research supported in this program addresses the detailed understanding of the imaging mechanism operative in scanning probe microscopy. A full understanding of the mechanism of image formation will enable the development of improved scanning probe methods, increasing the range of interesting and technologically important surfaces and adsorbed overlayers which can be probed with these methods. This instrumentation development forms a large fraction of the work supported here.