Chemical imaging of sheets, surfaces, and interfaces

这个项目得到了材料研究部固态和材料化学项目的支持，Janice Musfeldt教授和她的研究小组将利用近场红外光谱探索材料片、材料表面和界面的特性，并将投资于田纳西大学不同群体的年轻人的教育。这两项倡议都将推进同步加速器设施中化学成像光谱的使用，并为重要的社会价值和成果做出贡献。各种各样的材料系统将被成像，包括范德华，铁，和催化材料。这些材料薄片和纹理尺寸很小，远低于传统红外光谱的衍射极限，这就是为什么在这个项目中使用的近场成像方法具有变革性的潜力，也有助于揭示重要的结构-性质关系。广泛的教育、推广和服务活动也将在这个由国家科学基金会资助的项目的主持下进行，特别是在多样性、会议和研讨会组织以及为各种国家实验室提供服务等领域。该研究得到了材料研究部固态和材料化学项目的支持，采用基于同步加速器的近场红外光谱技术对具有不同功能的各种材料进行成像。重点是范德华、铁和催化材料，以及可以在这些系统中解开的结构-性质关系。目标是：(1)探索磁性和重硫族化物和卤化物在超薄极限下的对称性和性质；(2)揭示在铁弹性和铁电畴壁等特殊环境下的界面动力学；(3)解开化学键的非均质性及其与催化行为的关系；(4)了解如何增强和控制这些影响。将这些努力结合在一起的是对量子材料成像异质性的整体兴趣，以及探索全新类型的光-物质相互作用的机会。该项目的研究成果将推动理论方法和能源相关应用的发展。该项目还支持跨学科教育，为未来在先进材料领域的学术界、政府实验室和工业界就业的不同群体的年轻研究人员提供支持。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

Non-technical SummaryWith this project, which is supported by the Solid State and Materials Chemistry program in the Division of Materials Research, Professor Janice Musfeldt and her research group will explore the properties of material sheets, and material surfaces and interfaces using near field-infrared spectroscopy, and will invest in the education of a diverse group of young people at the University of Tennessee. Both initiatives will advance the use of chemical imaging spectroscopies at synchrotron facilities and contribute to important societal values and outcomes. A variety of material systems will be imaged including van der Waals, ferroic, and catalytic materials. These material sheets and textures are small in size - well below the diffraction limit of traditional infrared spectroscopies - which is why near-field imaging approaches such as those employed in this project have the potential to be transformative, also in unraveling important structure-property relationships. A broad range of educational, outreach, and service activities will also take place under the auspices of this National Science Foundation-funded program, especially in the areas of diversity, conference and workshop organization, and service to various national laboratories.Technical SummaryThe research, which is supported by the Solid State and Materials Chemistry program in the Division of Materials Research, employs synchrotron-based near-field infrared spectroscopy to image a variety of materials with different functionalities. The focus is on van der Waals, ferroic, and catalytic materials, as well as the structure-property relationships that can be unraveled in these systems. The goals are to: (i) explore symmetry and properties of magnetic and heavy chalcogenides and halides in the ultrathin limit, (ii) reveal interface dynamics in unusual settings such as at ferroelastic and ferroelectric domain walls, (iii) untangle chemical bonding heterogeneities and their relationship with catalytic behavior, and (iv) understand how these effects can be enhanced and controlled. What brings these efforts together is an overall interest in imaging heterogeneity in quantum materials and the opportunity to explore completely new types of light-matter interactions. Findings from this program will advance the development of theoretical approaches and of energy-related applications. This program also supports the interdisciplinary education of a diverse group of young researchers for future employment in academics, government laboratories, and industry in the area of advanced materials.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.