Spatial Organization in Epitaxial Thin Films and Chemisorbed Layers: Manipulation of Nano- and Meso-scale Structure on Metal Substrates

埃文斯/爱荷华州这个研究项目在爱荷华州州立大学进行，是实验表面科学家帕特·泰尔和数学家/建模专家詹姆斯·埃文斯之间的合作。 这项工作得到了分析和表面化学计划的支持，解决了金属薄膜的生长和薄膜的空间组织问题。 表面活性剂对异质外延生长的影响，在单晶和准晶衬底上的薄膜生长，以及在金属衬底上的化学吸附层的有序性都在这个研究项目中得到解决。 从扫描探针显微镜和高分辨率电子衍射的实验信息相结合的生长过程和计算的几何结构和弛豫的薄膜形态的理论建模。 从这一基础工作的信息有助于了解电子材料加工和纳米材料的合成和制备。为了理解形成许多重要技术基础的生长过程，包括电子器件制备、催化形成和纳米材料合成，必须获得关于模型系统的生长和形态变化的基本信息。 埃文斯和泰尔在爱荷华州州立大学的这项研究合作提供了有关生长过程的详细实验信息，并对生长和松弛过程进行了最先进的建模。 在分析和表面化学计划的支持下，这项合作正在研究表面活性剂，晶体和准晶体系统的影响，以及使用这些方法的有序化学吸附覆盖层。

AbstractCHE-0414378Evans/Iowa StateThis research project, carried out at Iowa State University, is a collaboration between and experimental surface scientist, Pat Thiel, and a mathematician/modeling expert, James Evans. The work, which is supported by the Analytical and Surface Chemistry Program, addresses metallic thin film growth and spatial organization of thin films. The effect of surfactants on heteroepitaxial growth, thin film growth on bimetallic and quasicrystalline substrates, and the ordering of chemisorbed layers on metal substrates are all addressed in this research project. Experimental information from scanning probe microscopy and high resolution electron diffraction is combined with theoretical modeling of the growth process and calculations of geometric structures and relaxation of thin film morphologies. Information from this fundamental work helps to understand electronic materials processing and nanomaterials synthesis and preparation. In order to understand the growth processes that form the basis of many important technologies, including electronic device preparation, catalysis formation, and nanomaterials synthesis, fundamental information about the growth and morphological changes of model systems must be obtained. This research collaboration between Evans and Thiel at Iowa State University provides detailed experimental information about the growth process with state of the art modeling of the growth and relaxation processes. With the support of the Analytical and Surface Chemistry Program, this collaboration is examining the effects of surfactants, bimetallic and quasicrystal systems, and ordered chemisorbed overlayers using these approaches.