MRI: Acquisition of an Advanced X-Ray Photoelectron Spectroscopy for Materials Research

PI: Nguyen, Trung v .提案：1429727标题：MRI：获得先进的x射线光电子能谱用于材料研究的意义一个具有更先进功能的x射线光电子能谱（XPS）系统将增强堪萨斯大学以及堪萨斯州和邻近州其他机构的研究能力和STEM人力资源开发。将联系来自地方和区域社区学院和机构的学生、教育工作者和研究人员，鼓励他们申请免费使用新工具，这些机构在代表性不足的群体中所占比例很高。尖端的研究设施和广泛的准入政策将有助于招募高素质的教师和学生，包括那些来自代表性不足的群体和/或来自堪萨斯州农村和中西部各州的第一代STEM学生。最后，在XPS系统的帮助下，本提案中确定的用户的替代能源和健康重点研究领域预计将对国家和全球社会产生重大影响。虽然材料的体积特性在许多应用中的选择和使用中起着重要作用，但丰富的功能取决于界面或表面相互作用。表面元素组成和性质的微小变化可使材料失活性或活性或仅微活性。这种现象适用于广泛的应用，从化学和燃料制造中的催化反应基础，化学和生物传感器，太阳能电池，电池和燃料电池等能量转换设备，到物理，化学和生物反应以及材料界面和界面的相互作用，如牙齿修复，药物输送，组织修复和再生。当材料的尺寸接近纳米级时，其体积性质发生变化并接近其表面性质。获得纳米材料表面和近表面元素组成、电子和化学性质的可靠信息，在催化、耐腐蚀合金、储能系统、生物材料、生物医学和光电子器件等技术领域至关重要。

PI: Nguyen, Trung V.Proposal: 1429727Title: MRI: Acquisition of an Advanced X-Ray Photoelectron Spectroscopy for Materials ResearchSignificanceAn X-Ray Photoelectron Spectroscopy (XPS) system with more advanced capabilities will enhance the research capability and the STEM human resources development of KU as well as other institutions in Kansas and neighboring states. Students, educators, and researchers from local and regional community colleges and institutions with a high percentage of representation of under-represented groups will be contacted and encouraged to apply for free access to the new instrument. Leading-edge research facilities and broad access policy will be instrumental in recruitment of top-quality faculty and students, including those from under-represented groups and/or from families in rural Kansas and Midwestern states that are first-generation STEM students. Finally, the alternative energy and health focused research areas of the users identified in this proposal are expected to have major national and global societal impacts, aided by the XPS system.Intellectual DescriptionWhile bulk properties of materials play an important role in selection and use in many applications, a wealth of functionality depends on interface or surface interactions. A slight variation in surface elemental composition and properties may make a material inactive or active or only marginally active. This phenomenon applies across a broad spectrum of applications, ranging from the foundation of catalytic reactions in the manufacture of chemicals and fuels, chemical and biological sensors, energy conversion devices like solar cells, batteries, and fuel cells, to physical, chemical, and biological reactions and interactions at interphases and interfaces of materials such as in dental reparation, drug delivery, tissue restoration, and regeneration. As the size of a material approaches nano-scale, its bulk properties change and approach that of its surface properties. Obtaining reliable information on the surface and near surface elemental compositions, and electronic and chemical properties of nano-materials, is crucial in technology areas such as catalysis, corrosion resistant alloys, energy storage systems, biomaterials, and biomedical and optoelectronic devices.