MRI: Acquisition of a field emission scanning electron microscope to expand characterization capabilities at the University of Iowa

MRI：购买场发射扫描电子显微镜以扩展爱荷华大学的表征能力

• 批准号: 2215495
• 负责人: Emily Finzel
• 金额: $ 46.17万
• 依托单位: University of Iowa
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2215495&HistoricalAwards=false
• 关键词: MRI; Acquisition; field; emission; scanning

A Field Emission Scanning Electron Microscope (FE-SEM) with added diverse imaging and detection capabilities will be acquired by the University of Iowa (UI). This FE-SEM system will 1) improve the quality and range of data that will be collected and analyzed, 2) increase the speed of data collection and thereby enable more efficient and effective use of research and educational funds, 3) facilitate quantitative evaluation of robust datasets, 4) provide additional opportunities for training STEM students for the 21st Century on a robust, user-friendly analytical tool that can be easily learned with comparatively low training time, 5) provide key support for undergraduate and graduate student research and teaching across a wide spectrum of disciplines, 6) be used regularly by faculty in the Earth & Environmental Sciences Department, as well as researchers in the Chemistry and Anthropology Departments and staff in the Iowa Geological Survey, 7) deliver a new level of micro and nano imaging capability for users from the College of Engineering and Department of Physics and Astronomy, and 8) greatly enhance electron microscopy competencies at UI thereby opening new avenues of research to a wider user base within the university itself and surrounding region. Placement of the instrument into the new Iowa Materials Analysis, Testing, and Fabrication (MATFab) facility will provide critical staff and infrastructure support for the instrument, researchers at UI, easy access for researchers at UI and from neighboring institutions (Iowa State University, Cornell College) who identified as major users, as well as others who would be occasional users (University of Northern Iowa, Kansas State University, Purdue University). We envisage that this instrument will become a regional facility, attracting users from elsewhere in the Midwest, given its unique capabilities that are not available elsewhere in the region.Addition of a Field Emission Scanning Electron Microscope (FE-SEM) with automated mineralogy capabilities will expand the scope of Earth Science research and education and transform the materials characterization capabilities of existing facilities available at the University of Iowa. Detailed chemical and textural sample characterization are increasingly critical components of many in-situ microanalytical applications in the Earth and material sciences. Correct interpretation ultimately rests on understanding the primary context of the material or grains of interest. Establishing this context involves documenting the distribution and spatial relationships of minerals or phases within a sample. Secondary electron (SE) and backscattered electron (BSE) imaging will be combined with automated energy-dispersive X-ray spectroscopy (EDS) analysis for rapid mineral identification and quantitative characterization of mineral abundance, elemental distributions, and textural properties across a broad range of materials. Cathodoluminescence (CL) imaging capabilities will greatly enhance current research efforts in trace element zoning characterization for petrologic and geochronologic studies. Simultaneous automated collection of all signals will provide cutting edge correlation of mineral distribution and textures and major, minor and trace element distributions. A field emission source will enable maximum signal generation and source longevity for mapping applications while also enabling nanometer scale imaging resolution for characterization of synthetic and natural nanomaterials. The instrument will be primarily used for applications related to geochronology and petrochronology, structural and metamorphic fabric analysis, igneous petrology, and characterization of sedimentary strata, but other applications will include economic geology, archeology and anthropology, and characterization of environmental surface films, synthesized catalytic materials and optoelectronic semi-conductor devices, as well as engineering applications.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.

爱荷华大学（UI）将获得具有带有多种成像和检测功能的外观扫描电子显微镜（FE-SEM）。该FE-SEM系统将1）提高将收集和分析的数据质量和数据范围，2）提高数据收集速度，从而更有效，有效地利用研究和教育基金，3）3）促进稳健数据集的定量评估，4）在21世纪的培训中提供额外的培训，以便在21世纪的培训中提供较低的培训，从而可以在较低的情况下进行培训，从而可以在强大的友好分析工具下进行培训，以实现较低的培训，以实现强大的培训，从而提供了较低的培训，从而可以在强大的友好分析工具上进行培训。 and graduate student research and teaching across a wide spectrum of disciplines, 6) be used regularly by faculty in the Earth & Environmental Sciences Department, as well as researchers in the Chemistry and Anthropology Departments and staff in the Iowa Geological Survey, 7) deliver a new level of micro and nano imaging capability for users from the College of Engineering and Department of Physics and Astronomy, and 8) greatly enhance electron microscopy competencies at UI因此，向大学本身和周边地区的更广泛的用户群开放了新的研究途径。将仪器放置在新的爱荷华州材料分析，测试和制造（MATFAB）设施中，将为乐器提供重要的员工和基础设施支持，UI的研究人员，UI的研究人员易于访问UI的研究人员以及邻近的机构（爱荷华州立大学，康奈尔大学，康奈尔大学，康奈尔大学），他们是主要用户，以及其他人，他们是北部的北部大学，是北部的大学，是北部大学的库斯特大学，我们设想，鉴于其在该地区其他地方无法使用的独特功能，该工具将成为区域设施，吸引了来自中西部其他地方的用户。具有自动化矿物学功能的现场排放扫描电子显微镜（FE-SEM）的附件将扩大地球科学研究范围的自动矿物学功能，将扩大现有的材料的功能，并将其材料的功能扩展。详细的化学和纹理样品表征是地球和材料科学中许多原位微分析应用的越来越关键的成分。正确的解释最终取决于了解感兴趣的材料或谷物的主要背景。建立这种情况涉及记录样本中矿物或阶段的分布和空间关系。二次电子（SE）和反向散射电子（BSE）成像将与自动散射X射线光谱（EDS）分析相结合，以快速矿物质鉴定和定量表征矿物丰度，元素分布，元素分布和纹理特性，跨广泛的材料。阴极发光（CL）成像能力将极大地增强岩石学和地质学研究的痕量元素分区表征的当前研究工作。所有信号的同时自动集合将提供矿物分布和纹理以及主要，次要和痕量元素分布的最前沿相关性。现场发射源将实现最大信号生成和源寿命，以绘制应用应用，同时还可以实现纳米尺度成像分辨率，以表征合成和天然纳米材料。 The instrument will be primarily used for applications related to geochronology and petrochronology, structural and metamorphic fabric analysis, igneous petrology, and characterization of sedimentary strata, but other applications will include economic geology, archeology and anthropology, and characterization of environmental surface films, synthesized catalytic materials and optoelectronic semi-conductor devices, as well as engineering applications.This award reflects NSF的法定使命，并使用基金会的知识分子优点和更广泛的影响审查标准来评估值得支持。