Surface Chemistry Studies with Ion Beams

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。在分析和表面化学项目的支持下，宾夕法尼亚州立大学的尼古拉斯·温诺格拉德教授寻求加强对高能粒子束与固体相互作用的基本方面的理解，以使各种表面化学研究中的新应用成为可能。 重点是利用团簇离子束，特别是那些充满活力的C60分子组成的，分子的深度剖析实验的目的是检查埋界面的多层分子薄膜结构的深度分辨率小于5 nm，从而提供复杂的结构材料的三维分析。计算机模拟支持旨在了解离子束侵蚀过程中地形变化的实验测量，并补偿异质材料的不同侵蚀速率。还寻求抑制化学损伤积累和增加灵敏度的方法。这项研究的结果将在质谱、高分子科学、天体物理学、药物发现、地质学和化学成像等不同领域得到广泛应用。学生参加K-12演示在经济上处于不利地位的附近学区，以及获得宝贵的技能，可以在职业生涯中应用。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).With support from the Analytical and Surface Chemistry Program, Professor Nicholas Winograd of Pennsylvania State University seeks enhanced understanding fundamental aspects of the interaction of energetic particle beams with solids to enable novel applications in a variety of surface chemistry studies. The focus is to utilize cluster ion beams, particularly those composed of energetic C60 molecules, for molecular depth profiling experiments with an aim of examining buried interfaces of multilayer molecular thin film structures with a depth resolution of less than 5 nm, thereby providing 3-dimensional analysis of materials with complex architectures. Computer simulations support experimental measurements aimed at understanding the changes in topography during ion beam erosion, and compensating for differential erosion rates across heterogeneous materials. Methods to inhibit chemical damage accumulation and increase sensitivity are also sought. Results from this research should find widespread application in such diverse fields as mass spectrometry, polymer science, astrophysics, drug discovery, geology and chemical imaging. Students participate in K-12 presentations in economically disadvantaged nearby school districts as well as gaining invaluable skills that can be applied in a professional career.