MRI: Acquisition of STEM Imaging and Microanalysis for the University of Wisconsin, Madison and the University of Puerto Rico, Mayaguez

威斯康星大学将获得一套用于新型场发射TEM的扫描透射电子显微镜（STEM）成像和微分析系统。该系统将增加原子分辨率z对比成像和空间分辨率电子能量损失光谱、x射线色散光谱和纳米衍射的能力。这些能力将对材料科学、地质学和生物学的许多不同研究工作产生深远的影响，包括：对玻璃纳米级结构秩序的新见解；基于MgB2的超导磁体和薄膜异质结构的研究；生物质室温制氢催化剂的研究进展开发用于环境修复的低成本、自然启发的新型纳米材料；并开发了基于纳米粒子化学成像的亚分子分辨率、多靶点生物标记系统。STEM系统将通过互联网从波多黎各大学马亚圭斯分校（UPRM）远程操作。这将是upm的第一个STEM或TEM，因此它代表了西班牙裔科学家和工程师基础设施的重大改进。我们将建立在现有的UW-UPRM连接的基础上，包括NSF在材料研究和教育方面的合作伙伴关系，以及一个成功的为期两周的TEM暑期学校，以培养UPRM研究生最先进的TEM和STEM，并加强UPRM的研究项目，包括磁性纳米颗粒的合成和应用，钒氧化物中的金属绝缘体转变，功能化和金属填充的碳纳米管，以及金属基复合材料。观察物质内部原子排列和组成的能力对于开发新材料和纳米技术至关重要，而最先进的扫描透射电子显微镜是完成这项任务的最佳工具之一。研究人员将利用威斯康辛大学新型扫描显微镜的这些能力，显著推进现有的研究项目，包括开发和理解先进的金属合金、应用于磁铁和核磁共振成像的新型超导体、开发用于生物质催化制氢的纳米技术、环境清理、以及理解细胞内生命的组成部分。来自波多黎各大学马亚圭斯分校的研究人员将能够通过互联网远程操作这种新型显微镜。我们将在现有的UW / UPRM在磁性纳米颗粒、超导体和金属复合材料方面的研究合作以及包括TEM暑期学校在内的教育联系的基础上，确保新的显微镜极大地增强了upm西班牙裔科学家和工程师的基础设施。

Technical AbstractThe University of Wisconsin will acquire a scanning transmission electron microscopy (STEM) imaging and microanalysis system for a new field emission TEM. This system will add capabilities for atomic resolution Z-contrast imaging and spatially resolved electron energy loss spectroscopy, x-ray dispersive spectroscopy, and nanodiffraction. These capabilities will have far-reaching impact on many diverse research efforts in materials science, geology, and biology, including: new insight into nanometer-scale structural order in glasses; development of superconducting magnets and thin film heterostructures based on MgB2; development of new catalysts for room temperature production of hydrogen from biomass; development of new low-cost, nature-inspired nanomaterials for environmental remediation; and development of a submolecular resolution, multiple target biological labeling system based on chemical imaging of nanoparticles. The STEM system will be remote operable via the Internet from the University of Puerto Rico, Mayaguez (UPRM). It will be the first STEM or TEM at UPRM, so it represents a major improvement in infrastructure for Hispanic scientists and engineers. We will build on existing UW-UPRM connections, including a NSF Partnership in Research and Education in Materials and a successful two-week summer school on TEM, to train UPRM graduate students in state-of-the-art TEM and STEM and to enhance UPRM research programs including synthesis and applications of magnetic nanoparticles, metal-insulator transitions in vanadium oxides, functionalized and metal-filled carbon nanotubes, and metal-matrix composites.Lay AbstractThe ability to see the arrangement and composition of atoms inside matter is crucial to developing new materials and nanotechnology, and a state-of-the-art scanning transmission electron microscope is one of the best tools for this task. Researchers will use these capabilities of the new scanning microscope at the University of Wisconsin to significantly advance existing research programs in developing and understanding advanced metal alloys, new superconductors with applications in magnets and MRI, and in developing nanotechnology for catalytic creation of hydrogen from biomass, environmental cleanup, and for understanding the building blocks of life inside of cells. Researchers from the University of Puerto Rico, Mayaguez will be able to operate the new microscope remotely over the Internet. We will build on existing UW / UPRM research collaborations on magnetic nanoparticles, superconductors, and metal composites, and educational connections including a TEM summer school, to ensure that the new microscope greatly enhances the infrastructure for Hispanic scientists and engineers at UPRM.