EAGER: Magnetic Interrogation Of Mesoscale Materials

EAGER：对介观尺度材料的磁分析

• 批准号: 1437417
• 负责人: Mogus Mochena
• 金额: $ 10万
• 依托单位: Florida Agricultural and Mechanical University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-06-01 至 2017-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1437417&HistoricalAwards=false
• 关键词: EAGER; Magnetic; Interrogation; Mesoscale; Materials

Non-Technical AbstractThis project will funds studies in three contemporary areas that lay the foundation for a comprehensive collaboration between The Florida A & M University (FAMU) and The National High Magnetic Field Laboratory (NHMFL), an NSF facility. Faculty at FAMU, an HBCU that is a predominantly teaching university, will collaborate with staff from the NHMFL to study new catalysts, new techniques for preparing hard/soft magnetic materials and nanoscale protein assemblies. This collaborative activity will provide important new research opportunities to faculty and students at FAMU and will seed a long term relationship between the institutions. The proposed activities will strengthen the activities in the existing doctoral program in Physics and will support the development of a doctoral program in Chemistry. The multidisciplinary program that will develop will significantly impact and enhance research in physics, chemistry, biology and engineering, with a direct link to the NHMFL and will strengthen the nations STEM workforce.Technical AbstractThe proposed studies will seed activity in three areas of current interest. These are:1) Catalyst and catalyst assemblies based on magnetic molecules. This work seeks to establish the fundamental mechanisms by which high-valent species of Earth-abundant metals achieve water splitting. It will also provide information of critical importance for addressing the correlation between the nature/structure of high-valent intermediates and their catalytic activity towards water oxidation. These studies have potential implications for the development of sustainable energy systems that take advantage of catalytic water splitting. 2) Studies of meso-scale spring-exchange magnets assembled in polymer superstructures. This work will explore new synthetic methods to assemble hard/soft composite magnets via bottom up formation of mesoscale structures to deliberately form controlled magnetic domains by utilization of nano-processing. The proposed research will result in novel materials that will have potential to substantially decrease our dependence on the imported rare-earth metals. 3) Studies of nanoscale protein and peptide assemblies. These studies will result in a fundamental understanding of the different mechanisms of self-assembly in peptides and how these mechanisms give rise to a resultant macroscopic property (elastic modulus, yield stress). This will allow control over the final property and be able to tune peptide properties towards a particular application (for use as cell and tissue scaffolds). These studies will also result in novel NMR techniques that characterize the self-assembly mechanisms which can be used to investigate aggregation and self-assembly in a wide variety of other materials.

该项目将资助当代三个领域的研究，为佛罗里达A M大学（FAMU）和国家高磁场实验室（NHMFL），NSF设施之间的全面合作奠定基础。& FAMU是一所以教学为主的HBCU大学，其教师将与NHMFL的工作人员合作，研究新的催化剂、制备硬/软磁材料和纳米蛋白质组装体的新技术。 这项合作活动将为FAMU的教师和学生提供重要的新研究机会，并将在机构之间建立长期关系。 拟议的活动将加强现有的物理学博士课程的活动，并将支持化学博士课程的发展。 将开发的多学科计划将显着影响和加强在物理，化学，生物学和工程学的研究，与NHMFL的直接联系，并将加强国家STEM劳动力。 这些是：1）基于磁性分子的催化剂和催化剂组件。 这项工作旨在建立地球上丰富的高价金属物种实现水分解的基本机制。它还将提供解决高价中间体的性质/结构和它们对水氧化的催化活性之间的相关性的至关重要的信息。这些研究对利用催化水分解的可持续能源系统的发展具有潜在的影响。2)聚合物超结构中组装的介观尺度弹簧交换磁体研究。 这项工作将探索新的合成方法来组装硬/软复合磁体，通过自下而上形成介观结构，通过利用纳米加工故意形成受控磁畴。拟议的研究将产生新的材料，有可能大大减少我们对进口稀土金属的依赖。3)纳米蛋白质与胜肽组装体之研究。 这些研究将导致对肽中自组装的不同机制以及这些机制如何产生所得宏观性质（弹性模量，屈服应力）的基本理解。这将允许控制最终性质，并且能够针对特定应用（用作细胞和组织支架）调节肽性质。 这些研究还将导致新的NMR技术，其特征在于自组装机制，可用于研究各种其他材料中的聚集和自组装。