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

PI：Nguyen，Trung V.Proposal：1429727标题：MRI：收购先进的X射线光电子能谱用于材料研究意义具有更先进能力的X射线光电子能谱(XPS)系统将增强KU以及堪萨斯州和邻近各州的STEM人力资源开发能力。将联系和鼓励来自代表不足群体比例较高的地方和地区社区学院和机构的学生、教育工作者和研究人员申请免费使用新文书。尖端的研究设施和广泛的准入政策将有助于招聘高质量的教师和学生，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州家庭的第一代STEM学生。最后，在XPS系统的帮助下，本提案中确定的以替代能源和健康为重点的用户研究领域预计将对国家和全球社会产生重大影响。表面元素组成和性质的微小变化可能会使材料变得不活性或活性或仅有少量活性。这一现象适用于广泛的应用，从化学品和燃料制造、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的催化反应基础，到中间相和材料界面的物理、化学和生物反应和相互作用，如在牙齿修复、药物输送、组织修复和再生中。当一种材料的尺寸接近纳米级时，它的本体属性会发生变化，并接近其表面属性。在催化、耐腐蚀合金、储能系统、生物材料以及生物医学和光电子器件等技术领域，获得关于纳米材料表面和近表面元素组成以及电子和化学性质的可靠信息至关重要。

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.